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BoP Lab / Michelin Raceway Road Atlanta

AS + SM + SRF + T4 at Michelin Raceway Road Atlanta

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AS×B-Spec+EP+FA+FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP+P+P2+vsSM×SMX+vsSRF×SRF3+STL+STU+T1+T2+T3+vsT4×Show 18 inactive classes
Events all

SRF has no laps in the events chosen. It ran at U.S. 2016: add that event.

One run is left out as not that car's own laps (far quicker than the car managed in any other session and than anyone else in its class all week; usually a swapped transponder): Jarrett Jones in Super Tour Mar 2025 Morning test (1:26.895; the car's best in any other session was 1:43.195 and the rest of the class's best all week 1:42.071).

Official results win over the timing feed: the live timing recorded a 1:42.553 for Charles Mactutus in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.504 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.911 for Danny Steyn in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.690 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.688 for Jim Drago in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.318 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.913 for Raiden Nicol in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.515 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.756 for Brian Henderson in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.096 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.933 for Logan Stretch in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.826 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.383 for Nick Leverone in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.408 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.638 for Junior Brock in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.311 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.631 for Spencer Lofton in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.830 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.528 for Brett Kowalski in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.832 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.568 for Skyler Cottrell in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.287 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.534 for Sam Craven in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.619 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.394 for Jonathan Neudorf in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.545 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.129 for Zack Barfield in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.020 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.430 for Frankie Barroso in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.282 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.206 for Julian DaCosta in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.289 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.158 for Matt Stretch in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.592 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.107 for Noah Harmon in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.660 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.334 for Maximilian Opalski in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.153 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.986 for Greg Sorg in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:51.698 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.965 for Nicholas Bruni in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.567 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.260 for Cliff Brown in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.870 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.003 for Jordan Rick Segrini in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:47.046 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.891 for Anthony Geraci in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:48.141 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.753 for Sean Noonan in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.181 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.374 for Logan Cozzie in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.752 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.111 for Steven Clemons JR in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:48.900 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.397 for Will Robinson in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.996 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.242 for Domenico Leuci in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.426 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.317 for Grant Janish in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.890 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.939 for Mickey Moran in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.907 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.567 for Max Schweid in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.347 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.798 for Thomas Paolino in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.173 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.296 for Rob Trollinger in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:58.758 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.409 for Jesse Singer in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:47.177 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.224 for Aaron Parkinson in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.509 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.672 for Randall Joe in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.432 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.746 for David Henderson in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.282 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.011 for Chris Clarke in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.216 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.485 for Bailey Sigler in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.601 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.080 for Marcos Vento in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:52.737 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:40.456 for Marc Cefalo in Super Tour Mar 2023 Grp 8 B-Spec,T3,T4 Race1, but the official results credit 1:45.532 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:40.526 for Robert Spence in Super Tour Mar 2023 Grp 8 B-Spec,T3,T4 Race1, but the official results credit 1:49.905 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:41.411 for Angelica Sprehe in Super Tour Mar 2023 Grp 8 B-Spec,T3,T4 Race1, but the official results credit 1:49.608 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:41.453 for Charles Habisreutinger in Super Tour Mar 2023 Grp 8 B-Spec,T3,T4 Race1, but the official results credit 1:45.252 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.139 for Anthony Geraci in Super Tour Mar 2023 Grp 5 SM Race 2, but the official results credit 1:48.141 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:56.565 for Olivier Piatek in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 8:44.184 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:56.086 for Chris Haldeman in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 2:17.873 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:58.284 for Boris Said Jr in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 2:00.222 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:55.847 for Sean Varwig in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 7:18.719 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:57.123 for Jesse Singer in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 2:07.342 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 7:18.676 for Sean Varwig in Super Tour Mar 2024 Grp 1 SM Race 2, but the official results credit 7:18.719 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.345 for Robert Spence in Super Tour Mar 2025 Grp 4 STL STU GT3U T3 T4 Race 1, but the official results credit 1:42.446 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.319 for Javier Rodriguez in Super Tour Mar 2025 Grp 7 SM Race 1, but the official results credit 2:22.040 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.827 for Christopher Girem in Super Tour Mar 2025 Grp 7 SM Race 1, but the official results credit 1:46.966 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.688 for Alfred Wingo in Super Tour Mar 2025 Grp 7 SM Race 1, but the official results credit 1:48.853 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.947 for Warren Sackman in Super Tour Mar 2025 Grp 7 SM Race 1, but the official results credit 1:52.634 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.022 for Skyler Cottrell in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.112 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.042 for John Salerno in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.662 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.939 for Max Stallone in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:52.004 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.987 for Logan Stretch in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.919 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.611 for Charles Mactutus in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:52.935 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.164 for Bobby Gossett in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.037 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.611 for Travis Wiley in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.132 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.822 for James Newell in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:52.988 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.619 for Stanley Brock Jr in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.397 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.520 for Stuart Mcaleer in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.545 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.629 for Dean Dybdahl in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:52.285 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.738 for Francisco Barroso in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.756 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.158 for David Stern in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.549 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.262 for Zach Ehrlich in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.441 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.419 for Will Robinson in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.624 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.780 for Cliff Brown in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.481 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.301 for Ryan Kipke in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.380 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.029 for Marc Cefalo in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.168 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.503 for Jack Murchison in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.279 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.148 for Danny Steyn in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.656 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.388 for Christian Meyer in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.147 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.685 for Chris Allen in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.628 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.820 for Ryan Maloney in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:55.505 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.917 for Gianni Maiuro in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.584 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.304 for Bob Mueller Jr in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:55.642 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.939 for Colin Murchison in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.858 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.115 for Ben Gaunt in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.883 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.841 for Ellie Gossett in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.970 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.818 for Gavin Vaughan in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.441 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.760 for Chase Kovatch in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 2:01.454 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.331 for Casey Moseley in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.440 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.902 for Graham Jacobson in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:55.633 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.189 for Greg Bogart in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.701 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.562 for Scott Phillips in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:55.262 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.845 for John Hamner in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.946 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.359 for Christopher Girem in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 2:02.861 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.824 for Riley Haig in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:59.410 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.922 for Cohen Craft in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.152 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.861 for Lucas Jensen in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.783 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.986 for Tal Tsfany in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:59.065 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.037 for Robert Garrison in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:57.475 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:49.958 for Alex Rubenstein in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 2:04.082 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:50.229 for Brayton Williams in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 2:06.066 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:41.326 for Kevin Fryer in Super Tour Mar 2026 Grp 4 STL STU T3 T4 Race 1, but the official results credit 1:53.758 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:40.736 for Ayden Rose in Super Tour Mar 2026 Grp 4 STL STU T3 T4 Race 1, but the official results credit 1:53.918 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.800 for Robert Spence in Super Tour Mar 2026 Grp 4 STL STU T3 T4 Race 1, but the official results credit 1:54.700 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too.

PosCarDriverClass#LapTheoreticalQualRace5-lap stintConsistencyTrapS1S2S3
1Ford MustangMichael KamalianAS199, 991:34.642 A-R11:34.5691:36.558 B-Q11:34.642 A-R11:36.577 A-R1+7.895 A-R1140.9 A-R137.067 A-R133.474 A-R124.028 A-R1
2Ford Mustang (2003)Thomas J EllisAS511:35.351 B-R21:34.7011:35.467 B-Q21:35.351 B-R21:36.206 B-R2+1.450 B-R2138.3 B-R237.678 B-R232.639 B-Q224.384 B-R2
3Ford Mustang (2006)Gregory EatonAS211:35.692 B-R21:35.2951:36.767 B-Q21:35.692 B-R21:36.001 B-R2+0.932 B-R2132.5 B-R237.336 B-R233.408 B-Q224.551 B-R2
4Ford Mustang GT (2008)James JostAS141:36.389 B-R21:35.5321:38.195 B-Q21:36.389 B-R21:37.112 B-R2+1.514 B-R2138.6 B-Q138.069 B-R132.794 B-R224.669 B-R2
5Mazda MiataJonathan Neudorf 2+ carsT4951:38.841 D-Q21:38.6831:38.841 D-Q21:40.761 D-R11:42.906 D-R1+3.413 D-R1118.1 D-R137.070 D-Q236.372 D-Q225.241 D-Q2
6Mazda mx5 (2009)Marc Cefalo 2+ carsT4001:39.119 D-Q21:38.9431:39.119 D-Q21:41.160 C-R21:46.547 D-R2+1.403 D-R2118.3 D-Q237.431 D-Q236.328 C-R225.184 D-Q2
7Mazda RX-8 (2004)Marc Cefalo 2+ carsT4001:39.654 B-R21:39.4201:40.096 B-Q21:39.654 B-R21:40.184 B-R2+0.831 B-R2111.1 B-R237.643 B-R236.384 B-R225.393 B-R2
8Mazda MIATA MX5 (2006)Ethan BarkerT41121:39.976 B-Q21:39.4561:39.976 B-Q21:40.155 B-R21:40.753 B-R2+0.624 B-R2108.6 B-R237.465 B-R236.492 B-R225.499 B-Q2
9Mazda MX-5Robert SpenceT4591:40.079 D-Q2sector data unreliable1:40.079 D-Q21:42.446 B-R21:42.920 B-R2+0.979 B-R2118.1 D-Q237.8080.75925.453
10Subaru BRZAngelica Sprehe 2+ carsT41201:40.432 D-Q21:40.1361:40.432 D-Q21:49.609 D-R21:50.144 D-R2+1.436 D-R2123.5 D-Q238.721 D-Q235.608 D-Q225.807 D-Q2
11Mazda MiataCharles HabisreutingerT491:40.594 D-Q21:40.5941:40.594 D-Q21:45.252 D-R21:45.786 D-R2+2.364 D-R2116.8 D-R137.878 D-Q236.779 D-Q225.937 D-Q2
12Mazda MX-5Kevin FryerT4981:40.673 A-Q21:40.0321:40.673 A-Q21:41.079 C-R22:01.120 C-R2+27.245 C-R2117.7 A-Q137.704 C-Q236.534 C-R225.794 A-Q2
13Ford Mustang (2012)Scotty B WhiteT401:41.239 B-R2sector data unreliable1:41.847 B-Q21:41.239 B-R21:41.926 B-R2+0.964 B-R2113.1 B-P38.7350.91625.791
14Toyota GR86Angelica Sprehe 2+ carsT41201:41.397 C-Q11:41.3891:41.397 C-Q11:42.072 A-R11:43.692 A-R1+4.048 A-R1121.0 A-Q139.312 A-P36.256 C-Q125.821 C-Q1
15Mazda MX5 (2010)Richard MooneyT491:41.555 C-Q11:41.5551:41.555 C-Q11:44.097 C-R22:01.549 C-R2+11.105 C-R2109.7 C-R238.698 C-Q136.901 C-Q125.956 C-Q1
16Mazda NCAyden RoseT4461:41.779 A-Q21:41.6151:41.779 A-Q21:53.918 A-R22:39.310 A-R2+10.959 A-R2114.8 A-Q1, A-R238.819 A-Q237.079 A-Q125.717 A-Q1
17Mazda MX5 (2009)Sergio ZlobinT41181:41.856 C-R21:41.2031:42.326 C-Q11:41.856 C-R22:01.035 C-R2+15.782 C-R2111.5 C-R238.506 C-R236.956 C-R225.741 C-R2
18Ford Mustang (2010)Paolo SalvatoreT41421:41.957 C-Q11:41.6181:41.957 C-Q11:45.711 C-R22:02.053 C-R2+10.447 C-R2112.0 C-Q138.728 C-Q237.005 C-Q125.885 C-Q1
19Mazda Miata (2001)Stanley Brock JrSM611:42.071 B-P1:42.0681:42.981 A-Q11:43.137 C-R21:43.495 B-R2+0.789 B-R2111.8 A-Q138.166 B-P37.653 B-P26.249 B-P
20Mazda Miata (2001)Mike CottrellSM29, 99, 91:42.324 A-Q1sector data unreliable1:42.324 A-Q11:43.062 C-R21:43.451 B-R2+0.740 B-R2111.2 A-Q138.2370.80625.854
21Mazda Miata (1999)John SalernoSM341:42.453 A-Q11:42.4531:42.453 A-Q11:53.662 A-R21:54.598 A-R2+2.961 A-R2110.9 A-Q138.394 A-Q137.750 A-Q126.309 A-Q1
22Mazda Miata (2003)Charles MactutusSM661:42.619 D-Q21:42.1871:42.619 D-Q21:42.995 C-R21:43.388 C-R2+9.631 C-R2110.9 A-Q138.190 C-Q237.772 A-Q126.225 A-P
23Mazda Miata VVTR (2002)Danny Steyn 2+ carsSM391:42.620 C-Q11:42.4961:42.620 C-Q11:43.008 C-R21:43.366 C-R2+10.314 C-R2104.6 C-Q238.352 C-Q237.827 C-Q126.317 C-Q1
24Mazda Miata (1999)Sean NoonanSM01:42.625 B-R21:42.5371:42.848 B-Q11:42.625 B-R21:43.481 B-R2+1.529 B-R2109.6 D-R238.494 B-R237.768 B-P26.275 B-Q1
25Mazda Miata (1999)Danny Steyn 2+ carsSM391:42.632 D-Q21:42.6321:42.632 D-Q21:44.689 D-R21:45.424 D-R2+3.725 D-R2111.3 D-R238.527 A-Q138.249 A-Q226.254 D-Q2
26Mazda Miata (2001)Max StalloneSM03, 1031:42.682 A-Q11:42.4011:42.682 A-Q11:43.512 B-R21:43.790 B-R2+0.708 B-R2110.4 A-Q138.387 A-Q137.761 A-Q126.253 B-P
27Mazda Miata (2002)Logan StretchSM98, 891:42.684 A-Q11:42.5931:42.684 A-Q11:43.065 C-R21:43.624 C-R2+18.097 C-R2111.6 D-Q238.418 D-Q237.868 B-R226.307 A-Q1
28Mazda Miata (2001)Bobby GossettSM44, 1441:42.699 A-Q11:42.3861:42.699 A-Q11:43.267 B-R21:43.933 B-R2+1.454 B-R2110.2 A-Q138.259 A-Q137.890 A-Q126.237 B-P
29Mazda Miata (1999)Travis WileySM177, 77, 781:42.719 A-Q11:42.4571:42.719 A-Q11:42.803 B-R21:43.374 C-R2+11.850 C-R2111.8 A-Q138.390 C-Q237.841 B-P26.226 A-Q1
30Mazda Miata (2000)James Newell 2+ carsSM231:42.741 A-Q11:42.6941:42.741 A-Q11:52.988 A-R21:54.054 A-R2+4.143 A-R2112.2 A-Q138.581 A-Q137.797 A-Q126.316 A-Q1
31Mazda Miata (1999)Stuart McaleerSM143, 431:42.999 C-R21:42.7151:43.275 A-Q11:42.999 C-R21:43.798 C-R2+12.217 C-R2110.9 A-Q138.504 C-R237.915 C-R226.296 A-Q1
32Mazda Miata (2005)Jim DragoSM21:43.034 D-Q21:42.8271:43.034 D-Q21:43.345 C-R21:43.896 C-R2+16.748 C-R2111.6 D-Q238.583 D-Q237.940 C-R226.304 D-Q2
33Mazda Miata (1999)Matthew Novak 2+ carsSM111:43.052 C-R21:42.9441:43.750 C-Q21:43.052 C-R21:43.543 C-R2+14.421 C-R2104.7 C-R238.472 C-R237.881 C-R226.591 C-R2
34Mazda Miati (2000)James Newell 2+ carsSM701:43.071 B-Q11:42.7161:43.071 B-Q11:43.331 B-R21:43.706 B-R2+1.030 B-R2105.9 B-R238.453 B-Q137.907 B-Q126.356 B-R2
35Mazda Miata (1999)Elivan GoulartSM721:43.085 B-P1:42.4481:43.239 B-Q11:43.238 B-R21:43.493 B-R2+0.642 B-R2105.9 B-P, B-Q138.503 B-R137.783 B-R226.162 B-P
36Mazda Miata (2002)Jose UlfeSM191:43.126 B-R21:42.6941:43.822 B-Q11:43.126 B-R21:43.669 B-R2+1.032 B-R2105.6 B-R238.615 B-R237.779 B-R226.300 B-P
37Mazda Miata (1999)Brett KowalskiSM15, 1151:43.136 C-Q11:42.9751:43.136 C-Q11:43.251 C-R21:44.075 C-R2+10.872 C-R2110.7 D-Q238.652 C-R237.945 C-Q126.378 A-Q2
38Mazda Miata (2002)Nicholas BruniSM1, 61:43.156 C-Q21:42.5241:43.156 C-Q21:43.207 C-R21:43.552 C-R2+14.239 C-R2111.3 D-R138.282 C-R237.803 C-Q226.439 C-Q2
39Mazda Miata (2000)Tyler BrownSM071:43.170 C-R21:42.9231:43.696 C-Q21:43.170 C-R21:43.501 C-R2+15.774 C-R2105.2 C-R238.475 C-R237.828 C-R226.620 C-R2
40Mazda Miata MX-5 (2002)Jarrett JonesSM861:43.195 B-R21:42.8291:43.614 B-Q11:43.195 B-R21:43.803 B-R2+1.620 B-R2106.2 B-R238.663 B-R237.764 B-R226.402 B-R2
41Mazda Miata (2001)Christian MeyerSM92, 1341:43.246 B-R21:43.0281:43.732 B-Q11:43.246 B-R21:43.614 B-R2+1.440 B-R2110.0 A-Q2, A-R238.696 B-Q138.150 B-R226.182 B-R2
42Mazda Miata (2003)Raiden NicolSM1931:43.254 D-Q21:43.1611:43.254 D-Q21:44.516 D-R21:45.143 D-R2+3.387 D-R2110.3 D-Q2, D-R138.544 D-Q238.102 D-Q226.515 D-R2
43Mazda miataDaniel WilliamsSM281:43.270 B-Q11:43.0351:43.270 B-Q11:43.466 B-R21:44.212 B-R1+3.486 B-R1105.9 B-R238.703 B-R137.954 B-P26.378 B-Q1
44Mazda Miata (2001)Brandon CollinsSM1441:43.273 C-R21:42.8051:43.584 C-Q21:43.273 C-R21:43.600 C-R2+12.440 C-R2104.3 C-R238.330 C-R237.918 C-R226.557 C-Q2
45Mazda Miata (1999)Dean DybdahlSM901:43.300 A-Q11:42.9481:43.300 A-Q11:52.284 A-R21:52.807 A-R2+2.623 A-R2108.4 A-Q1, A-R238.857 A-P37.929 A-Q126.162 A-Q1
46Mazda Miata (2001)Brian HendersonSM9, 971:43.323 D-Q21:42.8551:43.323 D-Q21:44.097 D-R21:44.957 D-R2+4.046 D-R2111.7 D-Q2, D-R138.481 D-R138.018 D-Q226.356 D-Q2
47Mazda Miata (1999)Will RobinsonSM5, 51, 151, 1931:43.353 B-Q11:42.7471:43.353 B-Q11:43.391 B-R21:44.381 B-R2+1.513 B-R2110.7 A-Q1, A-Q238.546 A-Q137.865 B-P26.336 B-P
48Mazda Miata (1999)Nick LeveroneSM188, 43, 92, 941:43.355 C-R21:43.0951:43.466 D-Q21:43.355 C-R21:44.147 C-R2+18.693 C-R2111.0 D-R238.640 C-Q237.984 C-R226.471 D-Q2
49Mazda Miata (2004)Francisco BArrosoSM481:43.360 A-Q11:43.1961:43.360 A-Q11:44.528 C-R21:45.124 C-R2+22.191 C-R2111.6 D-R238.833 A-Q237.969 A-Q126.394 A-Q1
50Mazda Miata (1999)Scott PhillipsSM1661:43.363 B-R21:43.3041:44.166 B-Q11:43.363 B-R21:44.389 B-R2+1.059 B-R2109.1 A-Q238.822 B-R238.087 B-R226.395 B-R2
51Mazda Miata (1991)David SternSM191:43.366 A-Q11:43.3561:43.366 A-Q11:54.548 A-R21:55.331 A-R2+4.696 A-R2110.9 A-Q138.849 A-Q137.936 A-Q126.571 A-Q1
52Mazda Miata (2005)Senter SmithSM551:43.367 C-R21:43.1481:43.946 C-Q11:43.367 C-R21:43.864 C-R2+15.793 C-R2103.8 C-Q238.557 C-R237.910 C-R226.681 C-Q1
53Mazda Miati (1999)Matthew Novak 2+ carsSM111:43.380 B-R21:43.0361:44.142 B-Q11:43.380 B-R21:44.035 B-R1+3.940 B-R1106.0 B-P38.691 B-R137.920 B-P26.425 B-R2
54Mazda Miata (2001)Zach EhrlichSM1801:43.383 A-Q11:43.1291:43.383 A-Q11:53.441 A-R21:54.790 A-R2+3.514 A-R2109.4 A-Q238.793 C-Q237.991 A-Q126.345 A-Q1
55Mazda Miata (2001)Justin GravettSM521:43.387 B-R21:43.2131:44.335 B-Q11:43.387 B-R21:44.515 B-R2+1.611 B-R2106.2 B-R238.660 B-R138.156 B-R226.397 B-R2
56Mazda Miata (1999)Olivier PiatekSM621:43.431 B-R21:43.0181:43.620 C-Q11:43.431 B-R21:44.218 B-R2+1.234 B-R2105.4 B-R238.580 B-R238.056 B-R226.382 B-R2
57Mazda Miata (1997)Cliff BrownSM011:43.449 A-Q11:43.2741:43.449 A-Q11:46.870 D-R21:52.970 D-R2+8.147 D-R2110.8 A-Q138.835 A-Q138.014 A-Q126.425 A-Q1
58Mazda Miata (1999)Andrew DevotoSM091:43.486 C-R21:43.1961:43.750 C-Q21:43.486 C-R21:44.130 C-R2+19.725 C-R2104.0 C-Q138.381 C-R238.142 C-Q126.673 C-R2
59Mazda Mazda Miata (2000)Max EhrlichSM811:43.494 C-R21:43.3421:44.097 C-Q21:43.494 C-R21:44.015 C-R2+17.198 C-R2104.0 C-R238.721 C-R238.076 C-R226.545 C-R2
60Mazda Miata (1999)Ryan KipkeSM441:43.531 A-Q11:43.4031:43.531 A-Q11:54.379 A-R21:54.903 A-R2+2.588 A-R2109.4 A-R238.689 A-Q138.215 A-Q126.499 A-Q1
61Mazda Miata (1999)Peter EnsorSM491:43.544 D-Q21:43.0661:43.544 D-Q21:45.991 D-R21:46.287 D-R2+3.200 D-R2111.7 D-Q238.731 D-Q238.113 D-Q226.222 D-Q2
62Mazda Miata (1997)Marc Cefalo 2+ carsSM001:43.554 A-Q11:43.4401:43.554 A-Q11:54.168 A-R21:54.760 A-R2+3.864 A-R2110.2 A-Q238.922 A-Q137.968 A-Q126.550 A-Q1
63Mazda Miata (2004)Spencer LoftonSM101:43.574 D-Q21:43.3251:43.574 D-Q21:45.830 D-R21:46.949 D-R2+4.811 D-R2111.3 D-Q238.680 D-Q238.136 D-Q226.509 D-Q2
64Mazda Miata (1999)Luke PullenSM211:43.606 C-Q21:43.4721:43.606 C-Q21:43.898 C-R21:45.425 C-R2+17.673 C-R2103.5 C-R238.624 C-Q238.261 C-R226.587 C-R2
65Mazda Miata (1999)Jack MurchisonSM1, 581:43.655 A-Q11:43.2821:43.655 A-Q11:44.299 B-R21:55.060 A-R2+2.700 A-R2111.2 A-Q138.612 B-Q238.136 A-Q126.534 A-Q1
66Mazda Miata (2001)Chris HaldemanSM281:43.664 C-Q21:43.4701:43.664 C-Q22:17.873 C-R2102.6 C-Q1, C-Q238.724 C-Q238.157 C-Q226.589 C-Q2
67Mazda Miata (2001)Sam CravenSM231:43.675 D-Q21:43.4221:43.675 D-Q21:45.620 D-R21:46.263 D-R2+3.734 D-R2111.0 D-R238.626 D-Q238.290 D-Q226.506 D-Q2
68Mazda Miata (1999)Jonathan Neudorf 2+ carsSM951:43.751 D-Q21:43.0811:43.751 D-Q21:44.545 D-R21:45.420 D-R2+4.134 D-R2111.2 D-Q2, D-R238.627 D-Q238.125 D-Q226.329 D-R2
69Mazda Miata (2001)Mark CurleeSM63, 1631:43.757 B-P1:43.3731:44.641 C-Q21:44.515 B-R21:44.990 B-R2+0.808 B-R2110.4 A-R138.974 A-Q137.846 B-P26.553 B-P
70Mazda Miata (1994)Chris AllenSM1691:43.760 A-Q11:43.4651:43.760 A-Q11:53.628 A-R21:54.907 A-R2+3.637 A-R2111.5 A-Q139.115 A-Q238.070 A-Q126.280 A-Q1
71Mazda Miata (1999)Ryan MaloneySM151:43.766 A-Q11:43.2901:43.766 A-Q11:55.506 A-R21:57.241 A-R2+3.651 A-R2111.2 A-Q138.701 A-Q138.038 A-Q126.551 A-Q1
72Mazda Miata (2003)Scott CarlisleSM541:43.771 B-R21:43.7371:45.433 B-Q11:43.771 B-R21:44.680 B-R2+1.210 B-R2105.5 B-R239.068 B-R238.150 B-R226.519 B-R2
73Mazda Miata (2003)Zack BarfieldSM1071:43.825 D-Q21:43.8251:43.825 D-Q21:46.020 D-R21:48.252 D-R2+5.997 D-R2109.8 D-Q2, D-R240.149 D-R238.521 D-Q226.552 D-Q2
74Mazda Miata (2001)Peter Tonelli IISM181:43.834 C-R21:43.5881:44.284 C-Q21:43.834 C-R21:44.960 C-R2+19.619 C-R2109.7 A-R139.079 A-R137.928 C-R226.581 C-Q2
75Mazda Miata (2002)Boris Said JrSM1331:43.853 C-Q11:43.5581:43.853 C-Q12:00.222 C-R22:23.721 C-R1+5.125 C-R1103.8 C-Q238.791 C-Q138.084 C-Q226.683 C-Q2
76Mazda Miata (2003)Joseph FederlSM1211:43.880 B-R21:43.3881:44.382 B-Q11:43.880 B-R21:44.180 B-R2+1.014 B-R2104.4 B-R238.791 B-Q238.211 C-R226.386 B-R2
77Mazda Miata (1999)Seth GentrySM201:43.918 B-R21:43.4471:45.010 B-Q21:43.918 B-R21:44.392 B-R2+0.721 B-R2105.1 B-R238.812 B-R238.266 B-R226.369 B-R2
78Mazda Miata (1999)Tyler KleinSM731:43.935 C-Q11:43.8511:43.935 C-Q11:44.349 C-R21:45.643 C-R2+16.895 C-R2103.4 C-Q138.938 C-R238.417 C-Q226.496 C-Q1
79Mazda Miata (1999)Gianni MaiuroSM721:43.958 A-Q11:43.6001:43.958 A-Q11:54.584 A-R21:55.060 A-R2+3.013 A-R2110.4 A-Q1, A-Q238.878 A-Q138.227 A-Q226.495 A-Q1
80Mazda Miata (1999)Max HewittSM221:44.032 C-R21:43.8131:44.367 C-Q21:44.032 C-R21:45.172 C-R2+19.041 C-R2103.5 C-R238.880 C-Q238.333 C-R226.600 C-R2
81Mazda Miata (2002)Bob Mueller JrSM601:44.035 A-Q11:43.7631:44.035 A-Q11:55.642 A-R21:56.438 A-R2+2.542 A-R2110.2 A-Q139.152 A-Q138.173 A-Q126.438 A-Q1
82Mazda Miata (2003)Colin MurchisonSM211:44.036 A-Q11:43.9751:44.036 A-Q11:54.857 A-R21:55.200 A-R2+2.051 A-R2109.7 A-Q238.893 A-Q138.341 A-Q126.741 A-Q2
83Mazda Miata (2001)Tom BrownSM271:44.062 C-R21:43.9681:44.113 C-Q11:44.062 C-R21:45.059 C-R2+18.193 C-R2103.8 C-R239.054 C-Q138.149 C-R226.765 C-Q2
84Mazda Miata (1999)Julian DaCostaSM781:44.079 D-Q21:44.0791:44.079 D-Q21:45.289 D-R21:46.633 D-R2+6.254 D-R2110.3 D-R239.264 D-Q238.562 D-R126.698 D-Q2
85Mazda Miata (1999)Ben GauntSM951:44.098 A-Q11:43.7681:44.098 A-Q11:54.883 A-R21:55.976 A-R2+4.267 A-R2108.7 A-Q138.909 A-Q138.184 A-Q126.675 A-Q2
86Mazda Miata (1999)Sean VarwigSM021:44.101 C-Q11:43.9831:44.101 C-Q1103.8 C-Q138.874 C-Q138.231 C-Q126.878 C-Q1
87Mazda Miata (2001)Ellie GossettSM77, 1771:44.102 A-Q11:43.9951:44.102 A-Q11:46.956 B-R21:47.299 B-R2+0.667 B-R2109.5 A-Q139.063 A-Q138.250 A-Q126.682 A-Q1
88Mazda Miata (2001)Gavin VaughanSM1481:44.103 A-Q11:43.1341:44.103 A-Q11:56.441 A-R22:00.065 A-R2+4.984 A-R2109.0 A-Q138.470 A-Q138.071 A-Q126.593 A-Q1
89Mazda Miata (2002)Weston DuchakSM681:44.130 C-Q21:43.7511:44.130 C-Q21:44.546 C-R21:45.050 C-R2+20.120 C-R2102.2 C-R238.897 C-Q138.083 C-Q226.771 C-R2
90Mazda Miata (1999)Noah HarmonSM1121:44.186 D-Q21:44.1861:44.186 D-Q21:45.660 D-R21:46.094 D-R2+3.483 D-R2110.3 D-Q2, D-R239.694 D-R238.528 D-R226.717 D-Q2
91Mazda Miata (1999)Maximilian OpalskiSM211:44.209 D-Q21:44.0451:44.209 D-Q21:46.153 D-R21:47.031 D-R2+6.430 D-R2111.3 D-Q239.074 D-Q238.464 D-Q226.507 D-Q2
92Mazda Miata (1999)Chase KovatchSM131:44.212 A-Q11:44.2121:44.212 A-Q12:01.454 A-R22:07.653 A-R2+3.926 A-R2111.2 A-Q139.244 A-Q138.494 A-Q126.474 A-Q1
93Mazda Miata (1999)Casey MoseleySM921:44.232 A-Q11:43.9821:44.232 A-Q11:54.440 A-R21:55.268 A-R2+3.624 A-R2110.0 A-Q139.099 A-Q138.132 A-Q126.751 A-Q1
94Chevrolet Camaro Z-28 (2002)Phillip WatersAS1771:44.301 C-Q11:44.3011:44.301 C-Q12:00.265 C-R12:08.610 C-R1+11.503 C-R1130.0 C-Q142.124 C-Q135.315 C-Q126.862 C-Q1
95Mazda Miata (2001)Miles HewittSM171:44.408 C-Q21:44.1251:44.408 C-Q21:45.686 C-R21:46.319 C-R2+18.637 C-R2103.0 C-R239.131 C-Q238.412 C-Q226.582 C-Q2
96Mazda Miata (2001)Graham JacobsonSM61:44.569 A-Q11:44.3401:44.569 A-Q11:55.632 A-R21:59.445 A-R2+5.017 A-R2109.0 A-R139.089 A-P38.504 A-Q126.747 A-Q1
97Mazda Miata (1999)Greg BogartSM1231:44.596 A-Q11:44.3891:44.596 A-Q11:56.701 A-R21:58.079 A-R2+1.966 A-R2108.4 A-Q139.359 A-Q138.337 A-Q126.693 A-Q1
98Mazda Miata (1999)Greg SorgSM711:44.602 D-Q21:44.6021:44.602 D-Q21:51.698 D-R21:52.745 D-R2+2.676 D-R2110.0 D-Q243.041 D-R240.155 D-R126.962 D-Q2
99Mazda Miata (2021)Jeremy FletcherSM221:44.629 D-Q21:44.6291:44.629 D-Q21:45.012 D-R21:46.483 D-R2+6.893 D-R2111.0 D-R239.933 D-R238.339 D-R226.715 D-Q2
100Mazda Miata (1999)Christopher GiremSM141:44.643 A-Q11:44.5961:44.643 A-Q11:46.966 B-R21:47.206 B-R2+0.561 B-R2107.9 A-Q239.099 A-Q138.607 A-Q126.890 A-Q2
101Mazda Miata (1999)Javier RodriguezSM1891:44.743 B-Q11:44.4401:44.743 B-Q12:22.040 B-R2102.7 B-Q139.118 B-Q138.538 B-Q126.784 B-Q1
102Mazda Miata (1999)Marcos VentoSM121:44.778 D-Q21:44.5791:44.778 D-Q21:52.736 D-R21:53.613 D-R2+5.271 D-R2109.5 D-R139.412 D-Q238.394 D-Q226.773 D-Q2
103Mazda Miata (1999)Henry BanksSM01:44.814 A-R11:44.2771:45.060 A-Q11:44.814 A-R11:45.227 A-R1+2.659 A-R1109.0 A-R139.182 A-R138.512 A-R126.583 A-R1
104Mazda Miata (1999)Mike RyanSM1201:44.886 C-Q11:44.8231:44.886 C-Q11:46.343 C-R21:53.976 C-R2+26.758 C-R2103.2 C-Q139.385 C-Q138.372 C-Q127.066 B-P
105Mazda miata 1800 (1999)Niko FondriniSM1511:44.919 C-Q11:44.5761:44.919 C-Q11:45.123 C-R21:45.952 C-R2+19.862 C-R2103.0 C-Q139.163 C-R238.517 C-Q126.896 C-Q1
106Mazda Miata (1999)Jordan Rick SegriniSM1081:44.976 D-Q21:44.5101:44.976 D-Q21:47.046 D-R21:48.256 D-R2+4.151 D-R2109.5 D-Q139.023 D-Q238.544 D-Q226.943 D-Q2
107Mazda Miata (2007)Anthony GeraciSM81:45.028 D-Q21:45.0281:45.028 D-Q21:48.497 D-R21:50.034 D-R2+4.184 D-R2110.7 D-Q241.598 D-R239.226 D-R226.855 D-Q2
108Mazda MiataJay ThomasSM701:45.049 A-Q21:44.7651:45.049 A-Q21:46.218 A-R11:47.460 A-R1+3.843 A-R1109.7 A-R139.288 A-R138.617 A-R126.860 A-Q2
109Mazda Miata (2002)Jason FichterSM71:45.116 C-R21:44.8821:46.150 C-Q21:45.116 C-R21:45.946 C-R2+19.298 C-R2101.9 C-R239.386 C-R238.482 C-R227.014 C-R2
110Mazda Miata 0John Hamner 2+ carsSM71:45.268 A-Q11:44.8221:45.268 A-Q11:56.946 A-R21:58.061 A-R2+3.173 A-R2109.1 A-Q139.469 A-Q138.548 A-Q126.805 A-Q2
111Mazda Miata (1999)Logan CozzieSM961:45.523 D-Q21:45.5231:45.523 D-Q21:49.752 D-R21:50.512 D-R2+3.531 D-R2109.4 D-Q241.310 D-R139.551 D-R127.079 D-Q2
112Mazda Miata (2003)Steven Clemons JRSM751:45.537 D-Q21:45.5371:45.537 D-Q21:48.900 D-R21:49.356 D-R2+4.182 D-R2108.7 D-Q240.747 D-R239.205 D-R127.057 D-Q2
113Mazda Miata (1999)Justin FerraroSM81:45.546 A-Q11:45.5461:45.546 A-Q1109.8 A-Q139.647 A-Q138.710 A-Q127.189 A-Q1
114Mazda Miata (2002)Jillian FichterSM121:45.611 C-Q11:44.9931:45.611 C-Q11:46.338 C-R21:47.089 C-R2+15.725 C-R2103.6 C-R239.331 C-R238.503 C-R227.159 C-Q1
115Mazda Miata (2000)Riley HaigSM051:45.614 A-Q11:45.5441:45.614 A-Q11:59.410 A-R22:01.516 A-R2+5.340 A-R2109.1 A-Q139.758 A-Q138.724 A-Q127.062 A-Q1
116Mazda Miata (1999)Cohen CraftSM741:45.707 A-Q11:45.4441:45.707 A-Q11:56.152 A-R21:56.546 A-R2+2.291 A-R2109.4 A-Q239.387 A-Q138.931 A-Q227.126 A-Q1
117Mazda Miata (1999)Lucas Jensen 2+ carsSM55, 561:45.717 A-Q21:45.4291:45.717 A-Q21:56.783 A-R21:57.481 A-R2+2.094 A-R2108.0 A-Q239.446 A-R139.132 A-Q226.851 A-Q2
118Mazda Miata (2003)Jesse SingerSM1921:45.796 C-Q21:45.2401:45.796 C-Q21:47.177 D-R21:47.763 D-R2+4.409 D-R2109.1 D-Q239.519 C-Q238.695 C-Q127.026 D-Q2
119Mazda Miata (1999)Tal TsfanySM10, 221:45.846 A-Q11:45.8461:45.846 A-Q11:59.066 A-R21:59.855 A-R2+1.921 A-R2108.2 A-Q139.862 A-Q138.926 A-Q127.058 A-Q1
120Mazda Miata (2004)Domenico LeuciSM461:45.932 D-Q21:45.8631:45.932 D-Q21:50.426 D-R21:52.009 D-R2+8.236 D-R2107.9 D-R139.687 D-Q239.000 D-Q227.176 D-Q2
121Mazda Miata (1999)Grant JanishSM1781:45.986 D-Q21:45.9861:45.986 D-Q21:49.890 D-R21:52.562 D-R2+7.241 D-R2108.8 D-R242.385 D-R239.407 D-R227.057 D-Q2
122Mazda Miata (1999)Brian ToneSM1551:46.056 C-Q11:45.3571:46.056 C-Q11:46.089 C-R21:46.893 C-R2+12.548 C-R2102.3 C-R239.339 C-Q138.853 C-Q227.165 C-R2
123Mazda Miata (1999)Hayden ManisSM881:46.149 C-Q11:44.2121:46.149 C-Q11:46.279 C-R21:47.717 C-R2+13.621 C-R2103.0 C-R238.813 C-R238.565 C-R226.834 C-R2
124Mazda Miata (1999)Robert GarrisonSM061:46.158 A-Q11:45.9961:46.158 A-Q11:57.475 A-R21:58.199 A-R2+3.791 A-R2108.2 A-Q140.157 A-Q138.699 A-Q127.140 A-Q1
125Mazda Miata (1999)Mickey MoranSM251:46.260 D-Q21:45.8161:46.260 D-Q21:50.907 D-R21:52.340 D-R2+6.599 D-R2109.6 D-Q239.865 D-Q239.044 D-Q226.907 D-Q2
126Mazda Miata (1999)Max SchweidSM911:46.271 D-Q21:46.2711:46.271 D-Q21:49.347 D-R21:50.823 D-R2+8.695 D-R2108.5 D-R141.758 D-R239.716 D-R227.413 D-Q2
127Mazda Miata (2003)Thomas PaolinoSM341:46.298 D-Q21:46.2981:46.298 D-Q21:50.173 D-R21:51.386 D-R2+5.082 D-R2108.8 D-R142.002 D-R239.880 D-R127.147 D-Q2
128Mazda Mx5 nb miata (1999)Lucas Jensen 2+ carsSM561:46.413 B-R21:45.8981:47.532 B-Q11:46.413 B-R21:47.195 B-R2+1.316 B-R2103.5 B-R239.877 B-R238.801 B-R227.220 B-R2
129Mazda Miata (1999)Randall JoeSM651:46.461 B-Q11:45.8841:46.461 B-Q11:46.502 A-R11:47.588 B-R2+1.251 B-R2108.8 D-Q139.996 A-R138.690 C-Q127.198 B-Q1
130Mazda Miata (2001)Rob TrollingerSM941:46.653 D-Q21:46.6531:46.653 D-Q21:58.758 D-R21:59.525 D-R2+3.255 D-R2107.1 D-Q245.976 D-R240.668 D-R127.356 D-Q2
131Mazda Miata (1999)Laurin BrallierSM761:46.778 D-Q21:46.778 D-Q2107.6 D-Q127.620 D-Q2
132Mazda Miata (1999)Ben FoltzSM51:46.900 A-R11:46.5121:47.918 A-Q21:46.900 A-R11:47.586 A-R1+1.947 A-R1109.7 A-R140.337 A-R138.951 A-R127.224 A-R1
133Mazda SM Miata (1999)Ryan PetermanSM531:46.947 B-R21:46.4351:48.292 B-Q21:46.947 B-R21:48.277 B-R2+2.185 B-R2102.6 B-R240.139 B-R238.963 B-R227.333 B-R2
134Mazda MiataJohn Hamner 2+ carsSM071:47.109 A-P1:46.643104.0 A-P40.521 A-P39.152 A-P26.970 A-P
135Mazda Miata (2001)Chris RawlingsSM351:47.139 A-P1:46.945102.5 A-P39.904 A-P39.346 A-P27.695 A-P
136Mazda Miata (1994)Mark ZwolleSM1541:47.151 C-R21:46.8921:47.434 C-Q11:47.151 C-R21:48.302 C-R2+15.060 C-R2103.4 C-Q140.543 C-Q138.928 C-Q127.421 C-R2
137Mazda Miata (1999)Aaron ParkinsonSM1111:47.193 D-Q21:46.7761:47.193 D-Q21:50.508 D-R21:52.079 D-R2+6.689 D-R2109.6 D-Q240.426 D-Q239.185 D-Q227.165 D-Q2
138Mazda Miata (1999)William KeelingSM111:47.254 D-Q21:46.7881:47.254 D-Q21:48.070 D-R11:49.042 D-R1+5.577 D-R1107.7 D-Q239.965 D-Q239.269 D-R127.554 D-Q2
139Mazda MiataDavid HendersonSM281:47.385 D-Q21:47.3851:47.385 D-Q21:49.282 D-R21:50.736 D-R2+7.728 D-R2109.1 D-R241.964 D-R239.278 D-R227.507 D-Q2
140Mazda Miata (1999)Chris ClarkeSM1091:47.775 D-Q21:47.7751:47.775 D-Q21:49.216 D-R21:50.519 D-R2+7.517 D-R2109.9 D-R241.948 D-R239.594 D-R227.399 D-Q2
141Mazda 3SLeann FalkT4291:47.885 A-Q11:47.5931:47.885 A-Q11:49.327 A-R11:52.043 A-R1+11.758 A-R1110.9 A-Q141.580 A-Q138.358 A-Q127.655 A-Q1
142Mazda Miata (2001)Steve SturmSM901:48.079 D-Q21:47.9061:48.079 D-Q21:48.359 D-R11:48.899 D-R1+4.377 D-R1108.0 D-R140.805 D-Q239.205 D-Q227.896 D-R1
143Mazda MiiatAlex RubensteinSM941:48.132 A-Q21:48.1321:48.132 A-Q22:04.082 A-R22:05.052 A-R2+3.348 A-R2107.0 A-Q240.813 A-Q239.712 A-Q227.607 A-Q2
144Mazda Miata (1999)Warren SackmanSM761:48.397 B-P1:47.8531:48.681 B-Q11:52.633 B-R21:53.520 B-R2+2.812 B-R2103.4 B-R140.796 B-P39.400 B-Q127.657 B-Q1
145Mazda Miata (1999)Gavin WardelSM1941:48.439 B-R21:48.2901:52.795 B-Q21:48.439 B-R21:50.527 B-R2+2.484 B-R2103.4 B-R240.760 B-R239.873 B-R227.657 B-R2
146Mazda Miata (1999)Alfred WingoSM1081:48.549 B-Q11:48.1381:48.549 B-Q11:48.853 B-R21:49.234 B-R2+1.852 B-R2104.2 B-R141.471 B-R239.416 B-R227.251 B-Q1
147Mazda Miata (1999)Jason GreenwoodSM1001:48.679 D-R11:48.6791:51.015 D-Q21:48.679 D-R11:49.618 D-R1+7.053 D-R1106.2 D-Q241.162 D-R139.930 D-R127.587 D-R1
148Scion FR-SJennifer RoamesT41861:48.835 D-Q11:47.4831:48.835 D-Q1113.0 D-Q241.553 D-Q238.692 D-Q127.238 D-Q1
149Mazda Miata (1999)Bruce AllenSM431:49.309 C-R21:48.9181:50.500 C-Q21:49.309 C-R21:50.392 C-R2+21.271 C-R2100.2 C-Q141.391 C-R239.541 C-R227.986 C-R2
150Mazda Miata (1991)Bailey SiglerSM591:49.963 D-Q21:48.9681:49.963 D-Q21:50.602 D-R21:52.130 D-R2+10.120 D-R2108.1 D-R141.200 D-Q239.938 D-Q227.830 D-R2
151Mazda Miata (1992)Brad WilliamsSM171:50.296 D-Q21:50.2961:50.296 D-Q21:57.449 D-R11:58.430 D-R1+2.940 D-R1105.5 D-Q142.258 D-Q240.085 D-Q227.953 D-Q2
152Mazda MiataBrayton WilliamsSM041:53.547 A-Q11:52.2431:53.547 A-Q12:06.066 A-R22:25.874 A-R2+2.774 A-R2100.5 A-Q142.472 A-R141.129 A-Q128.642 A-Q1
About this data
One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. The columns are about the car: its best lap, the lap its best sectors add up to, its sector times and trap speed. "Driver metrics" adds two about the driver: the best 5-lap stint (mean of the quickest five consecutive race laps) and consistency (how far the median race lap sat behind the best in that race; small is a driver who does it every lap), both from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

By car

CarClassDriversLapQualRaceTrapS1S2S3
Ford MustangAS/T461:34.642Michael Kamalian1:35.467Thomas J Ellis1:34.642Michael Kamalian140.9Michael Kamalian37.067Michael Kamalian0.916Scotty B White24.028Michael Kamalian
Mazda MiataSM/T41231:38.841Jonathan Neudorf1:38.841Jonathan Neudorf1:40.761Jonathan Neudorf118.1Jonathan Neudorf37.070Jonathan Neudorf0.806Mike Cottrell25.241Jonathan Neudorf
Mazda MX-5T461:39.119Marc Cefalo1:39.119Marc Cefalo1:40.155Ethan Barker118.3Marc Cefalo37.431Marc Cefalo0.759Robert Spence25.184Marc Cefalo
Mazda RX-8T411:39.654Marc Cefalo1:40.096Marc Cefalo1:39.654Marc Cefalo111.1Marc Cefalo37.643Marc Cefalo36.384Marc Cefalo25.393Marc Cefalo
Subaru BRZT411:40.432Angelica Sprehe1:40.432Angelica Sprehe1:49.609Angelica Sprehe123.5Angelica Sprehe38.721Angelica Sprehe35.608Angelica Sprehe25.807Angelica Sprehe
Toyota GR86T411:41.397Angelica Sprehe1:41.397Angelica Sprehe1:42.072Angelica Sprehe121.0Angelica Sprehe39.312Angelica Sprehe36.256Angelica Sprehe25.821Angelica Sprehe
Mazda NCSM/T441:41.779Ayden Rose1:41.779Ayden Rose1:43.331James Newell114.8Ayden Rose38.453James Newell37.079Ayden Rose25.717Ayden Rose
Mazda Miata VVTRSM11:42.620Danny Steyn1:42.620Danny Steyn1:43.008Danny Steyn104.6Danny Steyn38.352Danny Steyn37.827Danny Steyn26.317Danny Steyn
Mazda Mx5 nb miataSM31:43.195Jarrett Jones1:43.614Jarrett Jones1:43.195Jarrett Jones106.2Jarrett Jones38.663Jarrett Jones37.764Jarrett Jones26.402Jarrett Jones
Chevrolet Camaro Z-28AS11:44.301Phillip Waters1:44.301Phillip Waters2:00.265Phillip Waters130.0Phillip Waters42.124Phillip Waters35.315Phillip Waters26.862Phillip Waters
Mazda Miata 0SM11:45.268John Hamner1:45.268John Hamner1:56.946John Hamner109.1John Hamner39.469John Hamner38.548John Hamner26.805John Hamner
Mazda SM MiataSM11:46.947Ryan Peterman1:48.292Ryan Peterman1:46.947Ryan Peterman102.6Ryan Peterman40.139Ryan Peterman38.963Ryan Peterman27.333Ryan Peterman
Mazda 3ST411:47.885Leann Falk1:47.885Leann Falk1:49.327Leann Falk110.9Leann Falk41.580Leann Falk38.358Leann Falk27.655Leann Falk
Scion FR-ST411:48.835Jennifer Roames1:48.835Jennifer Roames113.0Jennifer Roames41.553Jennifer Roames38.692Jennifer Roames27.238Jennifer Roames
About this data
The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Super Tour Mar 2023 → Super Tour Mar 2024 2023-03-10 to 2024-03-08

T4 Request to Classify 2004-2008 Acura TSX in T4

#33590 from William Phee · Rule change · TB 23-04 (2023-04 Fastrack)

In T4 Spec lines, classify Acura TSX (2004-2008) as follows:

A specification table follows in the original; it is not shown here.

T4 T4 Mustang Brakes/Swaybar

#34036 from Scotty B White · Rule change · TB 23-04 (2023-04 Fastrack)

In T4 Spec Lines, Ford Mustang (2005-2010), change Notes as follows:
"Any sway bar up to F: 35mm and R: 22mm 28mm permitted."

Applies to Ford Mustang on this page: Paolo Salvatore

SRF Update SRF Front W2 Rain Tire Part Number

#34118 from Robey Clark · Rule change · TB 23-05 (2023-05 Fastrack)

tyres & wheelsSRF front W2 rain tyre Hoosier part number changes from 46100 to 46101 P185/65R13.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Front – Hoosier P/N 46100 1 P185/65R13 W2"

T4 05-06 Mini Wheel Weight

#34112 from Mav Singh · Rule change · TB 23-06 (2023-05 Fastrack)

In T4 Spec Lines, Mini Cooper S (02-04), change as follows:
Wheel Size: "16 x 7 17 x 8"
Add to Notes: "Wheels conforming to B-spec rules are permitted."
In T4 Spec Lines, Mini Cooper S (05-06), change as follows:
Wheel Size: "16 x 7 17 x 8"
Add to Notes: "Wheels conforming to B-spec rules are permitted."
In T4 Spec Lines, Mini Cooper S (07-13), change as follows:
Wheel Size: "17 x 7 8"

T4 06-09 VW Rabbit

#34153 from Cameron Conover · Rule change · TB 23-06 (2023-05 Fastrack)

In T4 Spec Lines, delete Volkswagen Rabbit 2.5 (06-07) in its entirety and change Volkswagen Rabbit 2.5 (08-09) as follows:
"Volkswagen Rabbit 2.5 (08 06-09)"
Add to Notes: "Integrated Engineering intake IEIMVB1-BK allowed with 25lb penalty."

SRF Hoosier SRF Wet Front Tire Rule Update

#34189 from Robey Clark · Rule change · TB 23-06 (2023-06 Fastrack)

tyres & wheelsSRF wet front tyre changes to Hoosier P/N 46100 P185/60R13 H20 or W2 with 2.5" ground clearance.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Wet:
Front – Hoosier P/N 46100 P185/60R13 H20 or W2
Rear – Hoosier P/N 46105 P205/60R13 H20 or W2
Ground clearance is 2.5" with driver as raced when P185/60R13 (H20 or W2) tires are used."

T4 96-01 Audi a4 2.8 Spring Rate

#34217 from Michael Gordhamer · Rule change · TB 23-06 (2023-05 Fastrack)

In T4 Spec Lines, Audi A4 V-6 (96-01) / Volkswagen Passat 2.8 V6 (96-05), change as follows:
Wheel Size: "16 x 7 17 x 8"
Tire Size: "225 245"
Notes: "The following items must remain stock: shock/struts (including mounts), original wheels, and transmission differential -
unless specified below. 800lb springs allowed. Front and rear sway bars permitted 32mm max."

T4 2002-2006 Mini Cooper S R53 Spec Line Request

#34336 from Aaron Fitzsimmons · Rule change · TB 23-06 (2023-07 Fastrack)

In T4 Spec Lines, Mini Cooper S (02-04), change Weight as follows:
"2750 2700"
In T4 Spec Lines, Mini Cooper S (05-06), change Weight as follows:
"2750 2700"

AS Crate Motor Part Numbers

#32944 from Sam Daniels · Rule change · TB 23-08 (2023-08 Fastrack)

wordingAS crate motor part number specification clarified; both CT400 P/N-19370604 and 19370604 engine assemblies permitted for GM vehicles.
As printed in Fastrack

In AS, GCR Section 9.1.6.F.2., change as follows:
"GM Performance parts CT400 P/N-1937 → 0604 or 1937 → 0604 engine assembly for GM produced vehicles."

AS Request wheel size change

#33007 from Michael Kamalian · Rule change · TB 23-08 (2023-08 Fastrack)

faster · tyres & wheelsAS Ford Mustang GT 5.0L (15-17) Restricted maximum wheel diameter increases to 19.0 inches.
As printed in Fastrack

In AS Spec Lines, Ford Mustang GT 5.0l (15-17) Restricted Preparation, change Notes as follows:
"Max. Wheel Size: Dia.18.0 19.0 inches."

Applies to Ford Mustang on this page: Michael Kamalian

AS Alternative Upper Front Control Arms for Dodge Challenger

#33352 from Clark Cambern · Rule change · TB 23-08 (2023-08 Fastrack)

wordingAS Dodge Challenger 5.7L/6.1L/6.4L V8 allows alternate front upper control arms; SPC-66045 spec part removed.
As printed in Fastrack

In AS SPEC Lines, Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2
valves/cylinder, change Notes as follows:
"SPC-66045 Alternate front upper control arms are permitted."

AS Front Brake Caliper Adapters for Dodge Challenger

#33353 from Clark Cambern · Rule change · TB 23-08 (2023-08 Fastrack)

otherAS Dodge Challenger 5.7L/6.1L/6.4L V8 now allows alternate front brake calipers with adaptor brackets for component compatibility.
As printed in Fastrack

In AS SPEC Lines, Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2
valves/cylinder, change Notes as follows:
"Stock brakes or alternate Dodge brakes (Part numbers: front caliper (0517 → 5106 (R) and 0517 → 5107 (L); rear caliper (R1542564 (R)
and R1542565 (L))) may be used with the brake rotor sizes listed in this specification line. Alternate brackets may be used to
facilitate updated/backdated components."

T4 Rules Clarification for Mazda RX8 Spec Line

#34395 from Colin Koehler · Rule change · TB 23-08 (2023-08 Fastrack)

wordingMazda RX-8 T3 and T4 transmission and final drive pairing requirement removed; T4 gains Mazdaspeed radiator, spring kit, restrictor, spoiler, air dam.
As printed in Fastrack

In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change notes as follows:
"Use of 2009 R3 transmission is permitted with alternate gear ratios as listed. R3 transmission must be paired with the listed
alternate final drive. Front sway bar permitted 32mm MAX rear sway bar 19 MAX, Front springs max 750, 500 rear. Cold air
intake permitted. Header permitted. Aftermarket flywheel and single disc clutch permitted with no weight penalty."
In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change notes as follows:
"Mazdaspeed radiator #0000-01-8501 allowed. Use of 2009 R3 transmission is permitted with alternate gear ratios as listed. R3
transmission must be paired with the listed alternate final drive. Mazdaspeed coil spring kit #QSEA-34-01Z allowed. 60mm flat
plate restrictor required. OE Rear spoiler allowed #F151-V4-920F. OE front air dam allowed #F151-V4-900f-BB. Springs Allowed:
(F) Mazda Motorsports- 0000- 04-9700-08 or Eibach- 0800.250.0700 (R) Mazda Motorsports- 0000-04-9400-07 or Eibach
0700.250.0400, and helper 0000-04-9926 allowed. Alternate sway bars allowed max 32mm (f) 19mm (r)."

Applies to Mazda RX-8 on this page: Marc Cefalo

T4 rule book corrections

#34437 from Chi Ho · Rule change · TB 23-08 (2023-08 Fastrack)

addedT3 BMW 320i 14–15 gains aftermarket intercooler; T4 BMW 320i 14–15 loses it.
As printed in Fastrack

In T3 Spec Lines, BMW 320i (14-15), add to Notes the following:
"Aftermarket intercooler permitted."
In T4 Spec Lines, BMW 320i (14-15), remove from Notes the following:
"Aftermarket intercooler permitted."

T4 Ride Height Correction for the T3 Solstice.

#34615 from Joe Aquilante · Rule change · TB 23-08 (2023-08 Fastrack)

suspension & brakesT3 and T2 Pontiac Solstice GXP 07-09 minimum ride height set to 3 inches.
As printed in Fastrack

In T2 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), add to Notes the following:
"Minimum ride height is 3 inches."
In T3 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), add to Notes the following:
"Minimum ride height is 3 inches."

T4 Inclusion of similar car. (CLK 320)

#34626 from Patrick Morgan · Rule change · TB 23-09 (2023-09 Fastrack)

In T4 Spec Lines, Mercedes Benz CLK 320 Coupe (2004), change as follows:
"Mercedes Benz CLK 320 Coupe, C320 Sedan (2004 2000-2007)

SRF SRF Radiator Rule Update

#34805 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)

addedSRF radiator options expanded: Enterprises P/N 480465 with baffle 480464, 480466, or Automotive 1R698 and CU698 allowed if cross-reference equivalent.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.V.j, change as follows:
"Radiator - Enterprises new style P/N 480465 (requires baffle P/N 480464) or P/N 480466 can be used. P/N 480466, may can be
replaced with Automotive P/N 1R698, CU698 or equivalent OEM manufacturer justified by one cross-reference chart equivalent,
as long as the size, shape, and material are the same as the original P/N. The capacity, core thickness, etc., cannot be changed
even if allowed under the above. The competitor is responsible for providing this documentation of the cross-reference P/N."

T4 Mazda MX-5 ND1 Spec Line Request

#34232 from Josh Smith · Rule change · TB 24-01 (2024-01 Fastrack)

In T4 Spec Lines, Mazda MX-5 Miata/Club/ RF (16-18), change as follows:
Weight: "2650 2700"
Notes: "Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. The following item(s) must
remain stock: transmission differential unless specified below. Retractable hardtop option permitted but must be disabled from
moving action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette,
including Mazda hardtop part #0000-07-5902-ND and part #0000-07-5901 (discontinued DG Motorsports). 29mm (f) 16mm (r)
sway bars allowed. Suspension package permitted with a 100 lbs. weight increase that includes the following parts: front springs
#0000-04-9700-08, rear springs #0000-04-9400-07, helper springs #0000-04-HLPR-EB (optional). Up to 500lb front and 300lb rear

Show 1 more lines

springs allowed. Mazda Motorsports Header part #0000-06-5410 allowed. Mazda tower brace 0000-04-5626 allowed."

SRF Update SRF Rain / Brake Rule

#34706 from Robey Clark · Rule change · TB 23-09 (2023-09 Fastrack)

otherSRF rain/brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24; secondary filament must connect to rain light switch.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.W.l, change as follows:
"A Super Bright LEDs Inc. rain / brake light comprised of a single standard trailer oval lamp, 2-1/4 inches x 6-1/2 inches, with
incandescent or LED illumination, P/N PT-STRB-R24, is required in the original roll hoop mounting location. This rule supersedes
GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No changes may be made to the original 3-pin connector on the
wiring harness. The secondary filament of the brake light assembly shall must be connected to a switch enabling its use as a rain
light."

SRF Update SRF Brake Light Rule v1

#34853 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)

otherSRF brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24, with SCCA Enterprises P/N 180427A pigtail and strobing rain light kit.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.W.l, change as follows:
"A Super Bright LEDs Inc. P/N PT-STRB-R24 (SCCA Enterprises P/N 180427A) rain / brake light, P/N PT-STRB-R24, is required in the
original roll hoop mounting location. This rule supersedes GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No
changes may be made to the original 3-pin connector on the wiring harness. An SCCA Enterprises P/N 1190503 Strobing Brake
Light Pigtail is required. The secondary filament of the brake light assembly must be connected to a switch enabling its use as
a strobing rain light. A Strobing Brake Light Kit P/N 1168003 is available, which includes the brake light and pigtail."

T4 BRZ/FRS/86 Spring Allowance

#35038 from Luis Goncalves · Rule change · TB 24-01 (2024-01 Fastrack)

In T4 Spec Lines, Scion FR-S/10 series (13-16), change Notes as follows:
"Eibach 82105.320, 4.10582 and SPC 67660 allowed. Eibach 82105.320 sway bar kit allowed. Eibach 4.10582 springs or 225 lb (f)
and 300 lb (r) springs allowed. SPC 67660 allowed. Front strut tower brace allowed. Raceseng, part # raceseng-ft86-r-shock-top
permitted. Non-OEM limited slip differential allowed with +50 lbs. weight penalty. 55mm flat plate restrictor required. Only 17”
wheels permitted."
In T4 Spec Lines, Subaru BRZ/ BRZ Limited (13-16), change Notes as follows:
"Eibach 82105.320, 4.10582 and SPC 67660 allowed. Eibach 82105.320 sway bar kit allowed. Eibach 4.10582 springs or 225 lb (f)
and 300 lb (r) springs allowed. SPC 67660 allowed. Front strut tower brace allowed. Raceseng, part # raceseng-ft86-r-shock-top

Show 12 more lines

permitted. Non-OEM limited slip differential allowed with +50 lbs. weight penalty. 55mm flat plate restrictor required. Only 17”
wheels permitted."
In T4 Spec Lines, Subaru BRZ (17-21), change Notes as follows:
"Eibach 82105.320, 4.10582 and SPC 67660 allowed. Eibach 82105.320 sway bar kit allowed. Eibach 4.10582 springs or 225 lb (f)
and 300 lb (r) springs allowed. SPC 67660 allowed. Front strut tower brace allowed. Raceseng, part # raceseng-ft86-r-shock-top
permitted. Non-OEM limited slip differential allowed with +50 lbs. weight penalty. 55mm flat plate restrictor required. Only 17”
wheels permitted."
In T4 Spec Lines, Toyota 86, GT (17-21), change Notes as follows:
"Eibach 82105.320, 4.10582 and SPC 67660 allowed. Eibach 82105.320 sway bar kit allowed. Eibach 4.10582 springs or 225 lb (f)
and 300 lb (r) springs allowed. SPC 67660 allowed. Front strut tower brace allowed. Raceseng, part # raceseng-ft86-r-shock-top
permitted. Non-OEM limited slip differential allowed with +50 lbs. weight penalty. 55mm flat plate restrictor required. Only 17”
wheels permitted."

Applies to Subaru BRZ on this page: Angelica Sprehe

T4 TSX Allowance

#35219 from Oscar Jackson · Rule change · TB 24-01 (2024-01 Fastrack)

In T4 Spec Lines, Acura TSX (2004-2008), add to Notes the following:
"Header allowed."

T4 Requested Update of Model Years of 370Z

#35231 from Richard Kulach · Rule change · TB 24-01 (2024-01 Fastrack)

In T3 Spec Lines, Nissan 370Z (09-16) / 370Z NISMO Edition (09-13), change model as follows:
"Nissan 370Z (09-16) / 370Z NISMO Edition (09-13) ,incl. Nismo (2009-2022)"

SRF SRF / SRF3 Rule Updates

#35268 from Robey Clark · Rule change · TB 24-01 (2024-01 Fastrack)

suspension & brakesSRF adds mandatory front brake ducts 12–36 inches, throttle pedal heel-toe extension, braided stainless flex lines, camber limit 5.0 degrees, radiator opening height 3½ ± ½ inches, rear shift cable clamp P/N WM302007A.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.H, add the following:
"NO MODIFICATIONS ALLOWED. Front brake ducts are required, attached to the openings in the lower radiator baffles, any
flexible 4" duct material allowed, installed length minimum 12" maximum 36" in length. Must be securely fastened, Bracket Part
# P/N 800368 can be used. Shall Must serve no other purpose. An extension may be welded to the side of the throttle pedal to
improve heel-and-toe braking. Master cylinder casting / location must be used as delivered on P/N 180110 Pedal Mounting
support. Aeroquip style -3 braided stainless flex lines only, must attach to all brake components without modification. Brake pad
"anti-rattle" clips must be removed."
In SRF, GCR section 9.1.8.D.1.V, add the following:
"ii. Rear SADEV shift cable aluminum two-piece style clamp may be used. The P/N WM302007A clamp must serve no other
purpose."
In SRF, GCR section 9.1.8.D.1.X.k, add the following:
"Negative camber shall must not exceed 5.0 degrees absolute maximum front and rear."
In SRF, GCR section 9.1.8.D.1.AA.b, add the following:
"2. Height of the radiator opening vertical surface 3 1/2“ +/- 1/2"."
P2 Engine Table B.1
2008 and older Stock
Suzuki, Yamaha,
Honda, BMW
38.5mm
P2 Engine Table B.2 Not required
P2 Engine Table B.3 38.5mm
Modified
Engine
950 lbs.
1005cc max
P2 Engine Table B.1
2008 and older 37mm
P2 Engine Table B.2 Not required
P2 Engine Table B.3 39mm
Stock Engine
1050 lbs.

T4 More Car Lightening Stuff

#35319 from Scotty B White · Rule change · TB 24-02 (2024-02 Fastrack)

In GCR, Section 9.1.9.2.D.1.g.3., change as follows:
"Batteries may be replaced provided the replacement is capable of starting the car. Batteries may not be relocated
unless noted on the spec line. Batteries must be adequately secured. Battery labeling must conform to 9.3.35.D. with
those of an alternate manufacturer, provided they are of similar amp-hour capacity, size and within 10% of OEM
weight."

T4 ND Missed Items

#35352 from Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), add to Notes the following:
"3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-
02, 0000-02-5804-01)."
In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-21), add to Notes the following:
"3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-
02, 0000-02-5804-01)."

T4 Inclusion of B-C spec cars in T4

#35374 from Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In GCR, Section 9.1.9.2., change as follows:
"Touring car eligibility: Cars are eligible for the class they are listed with a specification line and with the specific
allowances permitted. In addition, T2-T4 cars may race one class up in touring classes above their specification line class
as long as they are a legal T2-T4 car and conform to their specification line allowances as classified. Cars conforming to
C-Spec rules are permitted to compete in Touring 4."

T4 T2-T4 Set expiration dates on spec lines

#35378 from Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In T2-T4 Spec Lines, add **This Spec line will expire 12/31/24, Please submit to appeal**
to Notes to the following Spec Lines:
T2:
Acura TL SHAWD (10-13)
Audi S4 (12-14)
Audi S5 (13-14)
Audi TT RS (2018-)
Cadillac ATS-V (16-17)

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Cadillac CTS-V (06-07)
Chevrolet Camaro SS (98-02)
Honda Civic (2017-)
Saturn Sky / Convertible (07-09)
Subaru Impreza WRX STi (03-07)
Subaru Impreza WRX STi (08-11)
T3:
Audi S4 (10-11)
Audi S4 (12-14)
Audi TTS Coupe (10-11)
Cadillac ATS (2015)
Chevrolet Cobalt (05-07)
Dodge SRT-4 (03-05)
Ford Fiesta ST (2014-)
Hyundai Genesis Coupe (2010-)
Hyundai Veloster Turbo (18-21)
Mazda RX-8 Base/R3/Sport/ GT (04-12)
Mini Cooper S (2016-)
Subaru WRX (02-05)
Toyota Camry (11-15)
T4:
Acura Integra GS-R VTEC (3 or 4 door) (94-01)
Audi A4 V-6 (96-01) / Volkswagen Passat 2.8 V6 (96-05)
BMW 320i (14-15)
Chevrolet Cobalt SS, Sport Coupe (06-10)
Chevrolet Sonic RS (2011-)
Chrysler/Dodge Neon ACR SOHC (4 door) (01-02)
Dodge Dart (14-15)
Dodge/Plymouth Neon ACR SOHC/DOHC (2/4 door) (95-99)
Fiat 500 Abarth (12-14)
Ford Focus SVT (02-04)
Ford Focus ZX4 ST (05-06)
Ford Focus (08-11)
Ford Mustang V-6 (01-04)
Honda Accord LX & EX (03-07)
Honda Accord LX-S/EX/EX-L (08-12)
Honda Civic Coupe Si (99-00)
Honda Civic SI (02-03)
Hyundai Elantra GLS (11-12)
Hyundai Tiburon V-6 (03-08)
Hyundai Veloster Turbo/ R-Spec (14-15)
Kia Forte Koup and Sedan LX/EX (10-13)
Kia Forte Koup and Sedan SX (10-13)
Kia Forte Koup (14-15)
Mazda Protégé ES (2000)
Mazda Protégé 5 (02-03)

AS Request to Classify 1970-1981 Camaro and Firebird in AS

#33659 from Brandon Vivian · Rule change · TB 24-03 (2024-03 Fastrack)

addedChevrolet Camaro, Pontiac Firebird 70–81 Full Prep classified in AS at 3400–3600 lbs with 108.0 wheelbase, specific head castings, and suspension modifications permitted.
As printed in Fastrack

In AS Spec Lines, classify Chevrolet Camaro, Pontiac Firebird (70-81) Full Prep as follows:
AS Wheelbase Gear Ratios
Std. (or Alt.)
Brakes
(Max)
(in/mm)
Weight (lbs) Notes:

A specification table follows in the original; it is not shown here.

AS Fuel Cell 12

#34194 from Clark Cambern · Rule change · TB 24-03 (2024-03 Fastrack)

addedAS class adds fuel cell location notes to multiple Cadillac, Chevrolet, Dodge and Ford models: cells within 24 inches of standard tank.
As printed in Fastrack

In AS Spec Lines, add to Notes as follows:
Cadillac CTS-V (04-07): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken
from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.”
Chevrolet/Pontiac Camaro & Firebird (93-02): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell.”
Chevrolet/Pontiac Camaro & Firebird (93-02): “Fuel cells must be located within 24 inches of the standard tank. The 24
inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell.”
Chevrolet Camaro SS (V8) (10-15): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell.”
Chevrolet Camaro (10-15): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”
Dodge Challenger (08-20): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”
Ford Mustang GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”
Ford Mustang Coupe GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell.”
Ford Mustang GT 5.0l (15-17): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement
is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”
Ford Mustang GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”

T4 Reorganize Spec Lines

#35375 from Touring Committee · Rule change · TB 24-03 (2024-03 Fastrack)

In T2-T4 Spec Lines, change Spec Line as follows:
"Wheel- base (mm) Required Restrictor"

T4 Allow any 400lb rear spring in the RX8

#35433 from Raymond Blethen · Rule change · TB 24-03 (2024-03 Fastrack)

In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change Notes as follows:
"Mazda Motorsports- 0000- 04-9700-08 or Eibach- 0800.250.0700 (R) Mazda Motorsports- 0000-04-9400-07 or Eibach
0700.250.0400, and helper 0000-04-9926 allowed. Springs allowed 700lb (f), 400(r)."

Applies to Mazda RX-8 on this page: Marc Cefalo

AS Please Classify the 6th Gen Into AS.

#35448 from Daniel Richardson · Rule change · TB 24-03 (2024-03 Fastrack)

addedChevrolet Camaro 6th gen Full Prep added to AS class at 3400 lbs base or 3600 lbs with built engine.
As printed in Fastrack

In AS Spec Lines, classify Chevrolet Camaro (16-) Full Prep as follows:
AS
Wheelbase Gear Ratios
Std. (or Alt.)
Brakes
(Max)
(in/mm)
Weight (lbs) Notes:
Chevrolet
Camaro (16-)
Full Prep
110.6 3.42, 2.28,

A specification table follows in the original; it is not shown here.

T4 370Z Brake Rotor Size Correction

#35487 from Derek Chan · Rule change · TB 24-03 (2024-03 Fastrack)

In T2 Spec Lines, Nissan 370Z (09-17) / 370Z NISMO Edition (09-17), change Brakes (mm) as follows:
"(F)320 x 28 Vented R)320 x 16 Vented : (F) 355x32mm Vented(R) 350x20mm Vented”
In T3 Spec Lines, Nissan 370Z, incl. Nismo (2009-2022), change Brakes (mm) as follows:
"(F)320 x 28 Vented (R)320 x 16 Vented : (F) 355x32mm Vented(R) 350x20mm Vented”

AS spec lines

#35713 from American Sedan Committee · Rule change · TB 24-03 (2024-03 Fastrack)

unclearAS class: Ford Mustang GT 05-14 Restricted prep added; Cadillac CTS-V 04-07 to 3450 lbs; Camaro/Firebird variants reconfigured with weight and notes changes; Dodge Challenger 08-20 restrictor 76mm to 80mm; Ford Mustang variants updated wei…
As printed in Fastrack

In AS Spec Lines, classify Ford Mustang GT (05-14) with Restricted prep Engine as follows:
AS
Wheelbase Gear Ratios Std.

A specification table follows in the original; it is not shown here.

Applies to Ford Mustang on this page: Michael Kamalian, Gregory Eaton, James Jost

Super Tour Mar 2024 → Super Tour Mar 2025 2024-03-08 to 2025-03-07

AS Restricted Prep Aftermarket Parts Request

#35682 from Tom Aquilante · Rule change · TB 24-04 (2024-04 Fastrack)

addedAS Camaro, Firebird 93-02 and GTO 04-06 add approved LS1 connecting rod part numbers to Notes.
As printed in Fastrack

In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), add to Notes the following:
"For the LS1connecting rods Callies p/n CSC6100DS6A2AH, Scat rods p/n 2-1CR6100-944, GM performance rods p/n 12649190."
In AS Spec Lines, Pontiac GTO (04-06), add to Notes the following:
"For the LS1connecting rods Callies p/n CSC6100DS6A2AH, Scat rods p/n 2-1CR6100-944, GM performance rods p/n 12649190."

Applies to Chevrolet Camaro Z-28 on this page: Phillip Waters

T4 Corrections to T4 RX8 Spec line

#35767 from Touring Committee · Rule change · TB 24-04 (2024-04 Fastrack)

In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change Notes as follows:
"Mazdaspeed radiator #0000-01-8501 allowed. Mazdaspeed coil spring kit #QSEA-34-01Z allowed. OE Rear spoiler allowed
#F151-V4-920F. OE front air dam allowed #F151-V4-900f-BB. Springs allowed 700lb (f) max, 400(r) max. Oil metering pump may
be bypassed. Alternate sway bars allowed max 32mm (f) 19mm (r)."

Applies to Mazda RX-8 on this page: Marc Cefalo

AS Allowance of 11

#35824 from American Sedan Committee · Rule change · TB 24-04 (2024-04 Fastrack)

faster · tyres & wheelsAS Cadillac CTS-V, Chevy Camaro SS V8, Dodge Challenger, Ford Mustang GT 5.0L, Pontiac GTO allowed 11" wheels until 3/1/25.
As printed in Fastrack

In AS Spec Lines, Cadillac CTS-V (04-07), add to Notes the following:
"11" wide wheels can be used until 3/1/25."
In AS Spec Lines, Chevrolet Camaro SS (V8) (10-15), add to Notes the following:
"11" wide wheels can be used until 3/1/25."
In AS Spec Lines, Dodge Challenger (08-20), add to Notes the following:
"11" wide wheels can be used until 3/1/25."
In AS Spec Lines, Ford Mustang GT 5.0l (15-17), add to Notes the following:
"11" wide wheels can be used until 3/1/25."
In AS Spec Lines, Pontiac GTO (04-06), add to Notes the following:
"11" wide wheels can be used until 3/1/25."

Applies to Ford Mustang on this page: Michael Kamalian

AS 6th gen Camaro limited prep

#35733 from American Sedan Committee · Rule change · TB 24-05 (2024-05 Fastrack)

addedAS Chevrolet Camaro 1LE (2016-) added with 3600 lbs minimum weight, 275 tires, 60mm restrictor, 345/338mm brakes.
As printed in Fastrack

In AS Spec Lines, classify Chevrolet Camaro 1LE (2016-) as follows:
AS Wheelbase Gear Ratios Std. (or Alt.)
Brakes
(Max)
(in/mm)
Weight (lbs.) Notes:
Chevrolet
Camaro, 1LE
(2016-)
110.6 2.66,1.78,1.30,0.74,.5 (F)

A specification table follows in the original; it is not shown here.

T4 Allow T4 and T3 RX8 to Disable/Remove Factory Oil Inj.

#35761 from David Mead · Rule change · TB 24-05 (2024-05 Fastrack)

In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), add to Notes as follows:
"OEM oil injection system may be removed or disabled."
In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), add to Notes as follows:
"OEM oil injection system may be removed or disabled."

Applies to Mazda RX-8 on this page: Marc Cefalo

AS Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V8 LS1 Alum BLK

#35825 from Desi Colon · Rule change · TB 24-05 (2024-05 Fastrack)

addedAS Chevrolet/Pontiac Camaro & Firebird 82–92 5.7L LS1 classified: 3200 lbs, 13.1×1.27 disc brakes, 17 in max wheel, 65 mm restrictor, SLP intake lid permitted.
As printed in Fastrack

In AS Spec Lines, classify Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V-8 LS1 (Aluminum Block, Aluminum Heads) 2 valves
per cylinder, as follows:
AS Wheelbase Gear Ratios Std.

A specification table follows in the original; it is not shown here.

T4 2023 ND2 Miata Classification and Allowances

#35837 from Coyote Black · Rule change · TB 24-05 (2024-05 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-21), change Year as follows:
"(19-21 24)"
In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-21), add to Notes as follows:
"Suspension package permitted with a 100 lbs. weight increase that includes the following parts: front springs #0000-04-9700-
08, springs up to 500lb front and 300lb rear allowed. Mazda tower brace 0000-04-5626 allowed."

T4 Errors and Omissions for 06-09 VW Rabbit Rotor

#35851 from Andrew Burke · Rule change · TB 24-05 (2024-05 Fastrack)

In T4 Spec Lines, Volkswagen Rabbit 2.5 (06-09), change Brakes as follows:
"(F) 228 288 Vented Disc (R) 260 Solid Disc"

AS Full Prep Head

#35891 from American Sedan Committee · Rule change · TB 24-05 (2024-05 Fastrack)

added · engineAS Chevrolet Camaro, Firebird, and Ford Mustang now permit Flo Tek cylinder heads in multiple generations.
As printed in Fastrack

In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (82-92), add to Notes the following:
"Flo Tek Head part #102-500 are permitted."
In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), add to Notes the following:
"Flo Tek Head part #102-500 are permitted."
In AS Spec Lines, Chevrolet Camaro (10-15), add to Notes the following:
"Flo Tek Head part #102-500 are permitted."
In AS Spec Lines, Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86), add to Notes the following:
"Flo Tek Part # 203-500 are permitted."
In AS Spec Lines, Ford Mustang Including Cobra 94-04, add to Notes the following:
"Flo Tek Part # 203-500 are permitted."
In AS Spec Lines, Ford Mustang GT (05-14), add to Notes the following:
"Flo Tek Part # 203-500 are permitted."

Applies to Chevrolet Camaro Z-28 on this page: Phillip Waters

Applies to Ford Mustang on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

T4 Driveshafts

#35916 from Scotty B White · Rule change · TB 24-05 (2024-05 Fastrack)

In GCR Section 9.1.9.2.D.4.b., add the following:
"6. T2-T3- Driveshafts may be replaced with alternative materials ie. carbon fiber, aluminum, steel. Two-piece driveshafts may
be replaced with one-piece units. If non-OEM driveshaft is used, add 25 lbs."

T4 GCR ERROR - letter not properly applied to GCR

#35999 from Touring Committee · Rule change · TB 24-05 (2024-05 Fastrack)

In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), change Notes as follows:
"Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. The following item(s) must remain
stock: transmission differential unless specified below. Retractable hardtop option permitted but must be disabled from moving
action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including
Mazda hardtop part #0000-07-5902-ND and part #0000-07-5901 (discontinued DG Motorsports). 29mm (f) 16mm (r) sway bars
allowed. Suspension package permitted with a 100 lbs. weight increase that includes the following parts: front springs #0000-
04-9700-08, rear springs #0000-04-9400-07, helper springs #0000-04-HLPR-EB (optional). Up to 500lb front and 300lb rear
springs allowed. Mazda Motorsports Header part #0000-06-5410 allowed. Mazda tower brace 0000-04-5626 allowed."

AS Request for Classification of 2018-2023 mustang In

#35764 from Michael Kamalian · Rule change · TB 24-06 (2024-06 Fastrack)

addedAS adds 2018-23 Ford Mustang GT 5.0L at 3600 lbs, 275 tire, 60mm restrictor, optional Brembo front brakes.
As printed in Fastrack

AS Spec Lines, classify Ford Mustang GT 5.0L (2018-) as follows:
AS Wheelbase Gear Ratios

A specification table follows in the original; it is not shown here.

T4 Allow OEM Front Spoiler 06-08 Miata in T4

#35941 from David Mead · Rule change · TB 24-06 (2024-06 Fastrack)

In T4 Spec Lines, Mazda MX-5 / Club Model (06-15), add to Notes the following: "Front
spoiler permitted (NF51-V4-900F)."

Applies to Mazda MX-5 on this page: Marc Cefalo, Robert Spence, Kevin Fryer, Richard Mooney, Sergio Zlobin

T4 T4 Mustang Weight Reduction In T4 Spec

#36051 from Scotty B White · Rule change · TB 24-06 (2024-06 Fastrack)

Lines, Ford Mustang V6 (05-10), change as follows:
Weight: "3275 3225"
Notes: "14” Brembo Brake Kit#M-2300-S permitted."

T4 R53 Mini Cooper S spec line request In

#36056 from Manvinder Singh · Rule change · TB 24-06 (2024-06 Fastrack)

T4 Spec Lines, Mini Cooper S (02-04), add to Notes the following:
"Milltek exhaust manifold #SSXM459 allowed. 25mm rear sway bar allowed."
T4 Spec Lines, Mini Cooper S (05-06), add to Notes the following:
"Milltek exhaust manifold #SSXM459 allowed. 25mm rear sway bar allowed."

T4 Mustang T2/T3

#35877 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), add to Notes as follows:
"Track/Performance Package parts permitted."
In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows:
"Track/Performance Package parts permitted."
In T3 Spec Lines, Ford Mustang V6 (15-17), change Notes as follows:
"Track/Performance package allowed."

T4 Homologation of car to T4

#36030 from Patrick E Morgan · Rule change · TB 24-07 (2024-07 Fastrack)

In T4 Spec Lines, Mercedes C300 4Matic (2008-2011), classify as follows:

A specification table follows in the original; it is not shown here.

T4 T2-T4 Driveshaft Mistake...?

#36050 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)

In GCR Section 9.1.9.2.D.4.b.6., remove as follows:
"If non-OEM driveshaft is used, add 25 lbs."
In T2 Spec Lines, Ford Mustang V6 (11-14), change Notes as follows:
"Driveshaft from Alternate metallic driveshaft is allowed."
In T2 Spec Lines, Ford Mustang Boss 302 (12-13), change Notes as follows:
"Alternate metallic driveshaft is allowed."
In T2 Spec Lines, Ford Mustang GT 5.0L (11-14)ki, change Notes as follows:
"Alternate metallic driveshaft is allowed."

Show 12 more lines

In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), change Notes as follows:
"Alternate metallic driveshaft is allowed."
In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), change Notes as follows:
"Alternate metallic driveshaft is allowed."
In T2 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L (05-10), change Notes as follows:
'An Aluminum driveshaft is allowed."
"Alternate metallic driveshaft is allowed."
In T3 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10), change Notes as follows:
"An Aluminum driveshaft is allowed."
"Alternate metallic driveshaft is allowed."
In T3 Spec Lines, Ford Mustang V6 (11-14), change Notes as follows:
"Driveshaft from Alternate metallic driveshaft is allowed."

T4 MINI Cooper S Spec Lines Corrections.

#36086 from David Oliveira · Rule change · TB 24-07 (2024-07 Fastrack)

In T4 Spec Lines, Mini Cooper S (02-04), delete spec line in its entirety.
In T4 Spec Lines, Mini Cooper S (05-06), change Model as follows:
"Mini Cooper S R53 (0205-06)"
In T4 Spec Lines, Mini Cooper S (07-13), change Model and Notes as follows:
"Mini Cooper S R56 (07-13)"
Notes: "The following items must remain stock: shock/struts (including mounts), original wheels, and transmission
differential - unless specified below. Convertible model not allowed. Factory optional limited slip differential allowed.
JCW struts (F) 31 31 6 768 410 (R)33 52 6 768 412, springs (F)31 33 6 768 415 (R)33 53 6 768 418. May de-camber

Show 8 more lines

wheels by the use of slotted adjusters at the top of the strut mounting plates. They shall be located on the existing
chassis structure, utilizing the manufacturers original bolt holes and may not serve as reinforcement for that
structure. Any spring up to a maximum spring rate of 500 lbs. front and 800 lbs. rear may be used. Wheels conforming
to B-spec rules are permitted."
In T4 Spec Lines, Mini Cooper S (2016-), change Model and add to Notes as follows:
"Mini Cooper S (20142016-2023)"
Notes: "Convertible model not allowed. Any spring up to a maximum spring rate of 500lbs. front and 800lbs. rear may
be used."

T4 Allow Removal of Sound Tubes

#36130 from Coyote Black · Rule change · TB 24-07 (2024-07 Fastrack)

In GCR Section 9.1.9.2.D.1.b., add the following:
"2. OEM intake- Chambers, resonators and acoustic devices may be removed, provided; that their ports are located
prior to any required restrictor, their ports are completely sealed, and that the part serves no other purpose."

T4 B8/8.5 Audi S4 T3 and T2

#36195 from Brian Leib · Rule change · TB 24-07 (2024-07 Fastrack)

In T3 Spec Lines, Classify Audi S4 (2000-2002) as follows and allow the T2 spec line to expire.

A specification table follows in the original; it is not shown here.

T4 T4 Camaro V6 weight reduction

#36232 from Ted Warning · Rule change · TB 24-08 (2024-08 Fastrack)

In T4 Spec Lines, Chevrolet Camaro V-6 (96-02), change weight as follows:
"3250 3150"

T4 BOP adjustment for ND MX5s

#36345 from Touring Committee · Rule change · TB 24-08 (2024-08 Fastrack)

In T4 Spec Lines, change Weight (lbs) as follows:
Mazda MX-5 Miata/Club (16-18): "2700 2650"
Mazda MX5 Miata/Club/ RF (19-24): "2800 2750"

SRF Update Rain Tire Rule and Hoosier Decal Placement

#36436 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)

tyres & wheelsSRF wet tyres: front P185/60R13 H20 or W2 and rear P205/60R13 H20 or W2 removed; front P185/65R13 W2 and rear P205/60R13 W2 now required. Hoosier decal placement specified.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Wet:
Front – Hoosier P/N 46100 P185/60R13 H20 or W2
Rear – Hoosier P/N 46105 P205/60R13 H20 or W2
Ground clearance is 2.5” with driver as raced when P185/60R13 (H20 or W2) tires are used.
OR
Front – Hoosier P/N 46101 P185/65R13 W2
Rear – Hoosier P/N 46105 P205/60R13 W2
1. It is forbidden to regroove tires.
2. The use of tire warmers or cooling methods other than natural air convection or conduction is prohibited. The penalty for
violation will be the loss of qualifying times and/or the disqualification of race results.
3. Hoosier SRF/SRF3 Decal Placement:
Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to
the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the
rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including
SCCA Enterprises."

SM SMX Camera Rule Correction

#36496 from Paul Gauzens · Rule change · TB 24-09 (2024-09 Fastrack)

wordingSMX Spec MX-5 camera requirement: non-functioning recorder now will instead of may warrant penalty or disqualification.
As printed in Fastrack

In GCR, Section 9.1.7.1.D.21., change as follows:
"Cars running in Spec MX-5 must have a functioning video recorder/camera during all qualifying and race sessions as described
in 9.3.11. Upon request by an SCCA official, competitors must provide their video recording/data, which may be used by the
SCCA for any purpose including but not limited to rule enforcement and marketing. Failure to comply with a video request from
an official, or having a non-functioning video recorder/camera may will be grounds for penalty or disqualification."

SRF Protest Fee Clarification

#36540 from SCCA Staff · Rule change · TB 24-09 (2024-09 Fastrack)

wordingFE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure.
As printed in Fastrack

In FE, GCR section 9.1.1.I.2.U.b.3, change as follows:
"Protest Fee: Regional -$25.00, National -$50.00. See GCR section 8.3.1.D for fees and payment procedure."
In SRF, GCR section 9.1.8.D.1.U.b.3, change as follows:
"Protest Fee: Regional -$25.00, National -$50.00. See GCR section 8.3.1.D for fees and payment procedure. Item 1 will be done by
the CSR or other shop that is equipped for this type of work and will be paid directly."

SM Committee) AIM ECU Protocol

#36556 from Spec Mazda (SM/SMX · Rule change · TB 24-09 (2024-09 Fastrack)

added · engineSM and SMX must run latest AIM Data Logger Spec MX-5 ECU Protocol, effective 2024-09-01.
As printed in Fastrack

In GCR, Section 9.1.7.1.D.20., add the following:
“e. All cars must run the latest AIM Data Logger Spec MX-5 ECU Protocol.”
These specifications are part of the SCCA GCR and all automobiles shall conform to GCR Section 9.
A. PURPOSE AND
INTENT
Spec MX-5 (SMX) is based on four pillars: affordability, reliability, tech-ability, and fun to drive, the (SMX) Spec MX-5 car
provides the membership with the opportunity to compete in similarly prepared, low cost, 2006-2015 production-based MX-
5 car with limited modifications, intended to help deliver the most fair and competitive racing competition in SCCA Road
Racing
B. CLASSIFIED CARS
AND WEIGHTS
2006-2015 production-based MX-5
Cars are to be weighed with the driver and required ballast.
C. AUTHORIZED
MODIFICATIONS
Only the left-hand drive, North American-version of the 2006-2015 Mazda MX-5 convertible & power retractable hardtop
(PRHT) are eligible. The original OE vehicle identification number (VIN) stamped on the firewall must correspond with the
model year automobile as classified. VIN plates or stampings must remain in place, with the firewall VIN taking precedence.
A Mazda Factory Shop Manual for the specific make, model, and year of automobile is required to be in the possession
of each entrant. The manual may be in the form of printed material, microfiche, CDs, DVDs, and/ or Internet access to
manufacturer sponsored web-based databases that is readily accessible at time of inspection. The manual is intended to
aid scrutineers in identifying parts and the configuration of the automobile.
The items outlined in this VTS document represent the only modifications and safety items permitted and/or required on
Spec MX-5 vehicles other than safety items as required in SCCA’s current GCR Section
9. Parts and components may not perform an unauthorized function (i.e. Modifications must be stated as authorized or
cannot be done).
If the Mazda Factory Manual or these rules provide only a partial specification or no specification at all, the Mazda parts may
not be modified beyond what is permitted in these rules. Compliance will be determined by comparison to new or like parts
and/or the parts compliance measurement listing delivered by Mazda. Other approved parts with only a partial specification
or no specification available in these rules may not be modified.
Assembly, rebuild, and refurbishment procedures, and all associated dimensions must adhere to the published factory
service procedures, except as otherwise stated in these rules. No components may be added or omitted from those
specified by the published factory service procedures. All components must be comply with stated standard dimensions.
It is permitted to use industry standard procedures to repair damaged components.
The use of any painting, coating, plating, metal treatment process or impregnating substance (e.g., anti- friction, thermal
barrier, oil shedding coatings, chrome, anodizing, REM, isotropic finishing, etc.) to any internal engine surface, internal
axle components, internal transmission or differential surface, internal or external surfaces of the intake manifold, exhaust
manifold or down tube, is prohibited.
D. VEHICLE
TECHNICAL
SPECIFICATIONS
(VTS)
1. Vehicle Weight
a. The minimum vehicle weight with driver is 2,525.0 lb.
2. Ballast
If ballast is required to meet the required minimum weight, it must be added as follows:
a. A ballast base plate must be securely mounted using the factory OE passenger seat mounting bolt holes and bolts. Any number
of additional segments of ballast may be attached to the base plate.
b. Each segment of ballast must be fastened to the base plate with a minimum of two (2) one-half (1/2) inch bolts/studs and
positive lock nuts of SAE Grade 5/ Metric 8.8 or better and must utilize large diameter, load distributing washers. In lieu of
positive lock nuts it is permitted to positively thread the additional segments of weight into the base plate.
c. Holes are not permitted to be drilled in the floor pan to mount ballast.
3. Chassis
a. Towing eyes per SCCA’s current GCR Section 9.3 are required. There must be an arrow that strongly contrasts with the vehicle
paint scheme pointing to each tow eyestrap.
9.1.7.1 SPEC MX-5 (SMX)
b. All cars must use the front subframe PT# - NE51-34-800C
c. All cars must use the rear subframe PT# - NE51-28-800B.
d. OE strut tower brace is required; it is comprised of three (3) components; see Table 1 for part numbers.
e. An engine to fender brace located on the passenger side of the engine bay may be used if mounted in such a way that it does not foul brake
lines, fuel lines, or other systems that would interfere with the safe operation of the vehicle under race conditions – see Table 1 for allowed
modifications. (Mazda Motorsports PT# 0000-07-5600)
f. Disabling or removing of the door locking mechanism must be performed.
g. To facilitate frequent lifting of the vehicle, a 3/4” boxed tube not to exceed 12” long may be added under the rocker panel inboard of
the factory pinch weld flange on each side of the vehicle.
h. Convertible tops/power retractable hard tops (PRHT) and attaching hardware must be completely removed.
i. All chassis, structural, and electrical repairs, if performed, must be in conformity with factory procedures, specifications, and dimensions.
Unless specifically authorized by the manufacturer for repair or permitted by these rules, no reinforcement (e.g., seam welding, material
addition, etc.) is permitted.
j. Removal of excess wiring is permitted provided it serves no other purpose and does not splice or interrupt the OE harnesses. Removal of the
following systems is permitted: audio equip- ment; power seats; airbag/supplemental restraint systems components; heated seats; interior
lighting; power windows; and power door locks. (No additional wiring may be added except as permitted in other sections - e.g., Section 16:
Electrical Equipment.)
Table 1: Strut Tower Brace Parts
Description Mazda Part #
Right Side of Strut Tower
Brace
NE57-56-48X
Left Side of Strut Tower
Brace
NE57-56-49X
Center Section of Strut
Tower Brace
NE57-56-48ZA
k. A hole is permitted to be drilled in part #’s NE57-56-48X and NE57-56-49X to allow for access to the shock adjuster screw is permitted (it is
recommended that the hole not be larger than 15mm); NE57-56-48X may be modified in order to allow room for the engine passenger side
engine brace; no other modifications or other braces are permitted.
l. MX-5 donor chassis with originally equipped with 16” OE wheels require installation of
OE strut tower brace (part # NE57-56-35XA).
m. To facilitate engine bay air flow for cooling purposes it is permitted to remove the section outlined below in red from OE PT# NE57-56-
35XA. Block-off plates must be installed at the fresh air vent for the HVAC module at the firewall under the cowl to isolate driver
compart- ment from engine compartment.
(FIREWALL BLOCKOFF PLATE 0000-07-5832) No additional modifications are permitted.
4. Body
a. Interior and exterior door handles are required to remain operable. Alternate interior door handles or cord/strap are permitted.
b. The driver’s and passenger’s side inner door structural panel may be removed to fit the cage.
c. The stock side impact/anti-intrusion beam must not be modified or removed.
d. Door locking mechanisms must be disabled or removed.
e. A minimum of two (2) of the brake lights must be in working order per the current GCR Section 9.1.
f. The two (2) OE unmodified, external mirrors for the correct the Mazda MX-5 (left and right) are required; they must be
mounted in stock location and may not be modified.
g. OE interior rearview mirror or an aftermarket rearview mirror must be used.
h. 2006-2015 MX-5 bodywork may be updated or backdated, OE body parts only. (This includes Mazda OE accessory body
parts such as trunk lid spoiler, side skirts, front air dam.)
i. Mazda Motorsports’ fiberglass headlamp replacements may be used; (See table 2)
no modifications or substitutions are permitted; exceptions: painting, covering, and wrapping.
Table 2: Headlamp Replacement Covers
Model Year Mazda Part # Description
2006-2008 0000-07-5818-LT Left Side
2006-2008 0000-07-5818-RT Right Side
2009-2015 0000-07-5819-LT Left Side
2009-2015 0000-07-5819-RT Right Side
j. Lexan windshield may be used in place of the stock windshield. (Mazda Motorsports PT# -
0000-07-5101-5S)
k. Windshield clips per current GCR Section 9.3 windshield clips are recommended.
l. Hood and trunk pins or clips are permitted. Factory hood and trunk latches must remain intact and operational and may not be
removed, disabled or altered.
m. Front under hood weather strip must remain intact PT#- NE51-56-750
n. Rear under hood weather strip must remain intact PT#- NE51-56-760
o. Modification of release cables is permitted to facilitate external pull/opening straps/pulls/cords.
p. A radiator screen of 0.125” minimum stainless-steel mesh may be added in front of the radiator.
1. The screen must be a single layer and must be installed to the bumper cover and or grill and be contained entirely within the
bodywork of the vehicle.
2. Tape may be applied to the mesh screen.
3. The OE grill must remain intact.
q. It is allowed to apply roll bar padding to the crash support bar (52-070) located behind the front bumper to prevent damage to the
bumper.
r. Front and rear fender lips may be rolled to prevent tire damage.
s. Front OE fender liners must be intact and unmodified, except for what is allowed in section 13. J regarding brake ducts.
Repairs due to on-track damage is allowed so long as it serves no other purpose.
t. OE fog lights lens/glass must be removed. This will allow for the installation of brake duct kit (Mazda Motorsports’ part # 0000-03-
5301-NC.) The remaining opening from the fog light lens must either be blocked, or a connection must be made from the fog lamp
opening/hole in the bumper fascia to a brake duct attached to the hub.
u. Side marker lenses may be removed, and holes may be covered.
v. OE hard top or the unmodified Mazda Motorsports hard top (part # 0000-07-5901-CC)
are permitted.
w. PRHT chassis cars must trim the finish panel with the 3rd brake light to fit one of the approved hard tops.
1. Hhardtops may be painted or wrapped.
2. OE hard top latches must be removed and replaced with positive fasteners.
3. The front of the hard top may attach to the upper windshield bar of the roll cage.
4. It is permitted to run one single piece of racer tape to cover the leading edge of the after- market hard top where it meets
the factory windshield frame.
5. Openings beneath the hard top seal to the body are not permitted. The hard top must be securely mounted to the body of the vehicle
and perform no other purpose.
6. Body repair must be performed to maintain stock body contours, lips, profiles, etc. body repair modification must not increase clearance.
x. To improve driver’s exit through the window area, the driver and passenger vent window and vent window supporting frame may be removed
as an assembly.
1. Vent windows may be modified to accept fresh air ducting.
y. OE radio antennas may be removed. Antennas for two-way radios may be added.
z. Insulation & undercoating may be removed.
aa. All cars must run with both the front door windows fully open (i.e. fully down).
5. Cockpit /
Trunk
a. All interior trim components such as carpets, seats, cargo bins, seat belts, floor mat, firewall insu- lation/blanket, sound deadener patches,
undercoating, radio systems, speakers, dome lights, grab handles, sun visors and their insulating and attaching materials, must be removed.
Other than to provide for the installation of required safety equipment or other authorized modifications, no other driver/passenger
compartment alterations or gutting are permitted.
b. It is permitted to install a radio replacement panel.
c. The outer edges of the dashboard may be cut the minimum amount required to install the roll cage.
d. Air bag systems must be disarmed and must be removed.
e. It is permitted to remove all components of the cruise control system.
f. The top portion of the door panels containing the door latch release handle must remain intact.
g. The lower portion of the door panels must be removed for installation of the roll cage. Gutting of the door may not go outside of the factory
seal.
h. The door window glass and window operating mechanisms must be removed.
i. The OE dashboard and its attaching hardware and brackets must be retained.
j. For installation of required safety equipment, however, it is permitted to modify the OE dash bar, so long as it is outboard of the first dash support
brackets (illustration below). Modification of the first dash support brackets, nor inboard from them, is not permitted. The OE dash bar must be
securely mounted.
k. The HVAC control module located under the dash may be removed together with the following: blower motor, evaporator core,
heater core and associated ducting. Once removed it is permitted to block the blower inlet passage on the firewall.
l. All openings between the driver/passenger compartment and the trunk / gas tank area that include the filler tube & fuel tank vent
must be filled completely with a metal bulkhead that is securely mounted (E.G. nuts/bolts, nut-serts, rivets). This shall close the
entire trunk from the driver/ passenger compartment and comply with current GCR Section 9.3.
m. Mazda Motorsports’ finish panel trim kit (part # 0000-07-5822) may be used to create the required bulkhead above
n. It is permitted to remove the driver’s side factory seat mounts, but not the floor pan.
o. It is permitted to remove the horn and all associated horn related components.
p. OE driver’s seat must be replaced with a one-piece bucket-type race seat per current GCR Section 9.3.
q. The passenger seat must be removed.
r. Any steering wheel except wood rimmed types may be used.
s. Any shift knob may be used.
t. The air conditioning equipment located in the engine compartment (AC compressor assembly, associated lines/dryer and the
condenser) must be removed.
u. Alternate gauges and instruments may be added. The original instrument cluster must remain connected and functional However,
it may be relocated to allow the mounting of an aftermarket dash such as an AiM. The wiring to relocate the dash may not be cut or
extended, it may only be re-routed. The remainder of the dashboard or panel must remain intact.
v. Modifications may be made to the foot pedals to improve the comfort and accessibility to the driver; relocation of mounting
points is not permitted.
1. Dead pedal/footrest and heel stop may be added.
w. Instrument clusters must be unmodified OE parts .
x. Two-way radios may be used.
y. Alternate means of windshield defrosting is permitted
6. Engine
Modifications
6.1. General
a. No modifications to the engine are permitted, except where specifically authorized within these rules. This includes but is not
limited to: all fuel injection and engine management components, as well as electrical, cooling, and lubrication systems.
b. All systems, unless otherwise stated, are subject to test procedures and must conform to OE
specifications as stated in the Mazda Factory Service Manual.
c. Permitted engine maintenance includes the replacement, but not modification, of external engine and engine systems parts.
1. No balancing, blue printing, lightening, polishing or other modification of moving parts of the engine is permitted.
2. All parts in the engine must be OE parts unless specified in this rule set.
3. For all Mazda part numbers in these specifications, superseding part numbers are consid- ered equivalent.
d. Compression ratio for 2.0L engines must be 11.00:1; calculated using the official Spec MX-5 calculator.
6.2. Engine Block
a. The engine block may be decked or milled to achieve the class specified compression ratio. Honing of cylinders is permitted to accommodate
piston clearance so long as a maximum standard diameter is not exceeded shown in Table 3.
b. The cylinders may be bored to accommodate piston clearance requirements so long as maximum permitted overbore diameter is not exceeded
shown in Table 3 below.
Table 3: Piston Sizes
Piston Part # Bore Diameter Max
Standard 0000-01-5310 87.6046mm (3.449”)
Allowed Overbore (.020) 0000-01-5310-OS 88.1126mm (3.469”)
c. It is not permitted to overbore a single cylinder; all cylinders must be bored equally.
d. Sleeving of cylinders is not permitted.
6.3. Crankshaft
a. OE Mazda MZR 2.0L (2009-2015) manual transmission crankshaft (part # LF9G-11-301) must be used with no modifications except for
machining or polishing polishing and/or machining of the bearing surfaces to allow the use of main and rod bearings as permitted
in Table 4 below.
Table 4: Crankshaft Measurements
easurement iameter Diameter
b. OE crankshaft (Mazda part # LF9G-11-301) must weigh a minimum of 31.75lb.
c. Maximum permitted stroke is as follows: 3.27” / 83.1mm
d. Shot peening is prohibited.
e. Bearings
1. Main and rod bearings must not be modified; coatings are not permitted.
2. OE bearings are permitted.
3. The only bearing sizes permitted other than OE are listed in see Table 5.
Sizes
Bearing Type Minimum Bearing
Width Minimum Bearing
Thickness Minimum Bearing
Weight Part #
Main Bearings
(Standard H) .630” 0.097” N/A 0000-01-5215-MB
Main Bearing
(Standard HX) .630” 0.097” N/A 0000-01-5216-MB
Rod Bearings
(Standard H) .630” 0.057” 28g 0000-01-5213-RB
Rod Bearing
(Standard HX) .630” 0.057” 28g 0000-01-5214-RB
f. The crank trigger must not be modified; it must be installed per the Mazda Factory Service Manual.
g. OE crank pulley/balancer (Mazda part # LF94-11-400) must not be modified and must be installed per the Mazda Factory Service Manual.
h. Knife edging of the crankshaft is not permitted.
i. Modifications to the crankshaft counterweights are not permitted.
j. Coatings, REM or metal treatments of any kind are not permitted.
k. Alternate shifter bushing located at the bottom of the shift lever is allowed.
6.4. Connecting Rods
a. OE Mazda MX-5 (2009-2015) manual transmission unmodified connecting rods (part # LF9G- 11-210) must be used. Connecting
rod weight with cap and bolts must not be less than 530 grams.
6.5. Pistons
a. Mazda Motorsports’ competition pistons (standard bore part # 0000-01-5310; oversized part # 0000-01-5310 OS) are required;
no modification is permitted.
b. The minimum weight of the piston, less wrist pin and hardware, must not be lighter than 290 grams.
c. Mazda Motorsports’ competition wrist pin (part # 0000-01-5310-PN) must be used.
d. The minimum weight of the wrist pin must not be lighter than 80 grams.
e. Modification of the piston ring end gap width is permitted.
6.6. Cylinder Head
a. Mazda Motorsports’ competition cylinder head (part # 0000-01-5300) must be used; no modi- fications to the cylinder head are
permitted outside of the gasket face surface outlined below in Table 6.
b. Intake runner CC volume is 182cc +/- 1cc.
c. Exhaust runner CC volume is 114cc +/- 1cc.
d. Combustion chamber volume may not be below 41cc.
e. The gasket face of the cylinder head may be resurfaced provided the maximum allowed compression ratio is not
exceeded.
I. Surfacing of the head gasket surfaced must be in a flat plane.
II. Cylinder head gasket surface distortion may not exceed .010mm or 0.004”.
f. The minimum height of the cylinder head as measured must be at least (TBA)
g. The following head gaskets in Table 6 below are permitted; no other gaskets may be used.
Table 6: Head Gasket Measurements
Description Thickness Mazda Part #
OE Gasket 0.017” approximate crush
depth L3G2-10-271A
Competition
Gasket 0.55mm (0.021”) 0000-01-5319-21
Competition
Gasket 0.75mm (0.030”) 0000-01-5319-30
Competition
Gasket 1.0mm (0.040”) 0000-01-5319-40
Competition
Gasket 1.3mm (0.051”) 0000-01-5319-51
6.7. Camshaft and Camshaft Timing
a. Camshafts must not be modified; see Table 7 for OE camshaft part numbers.
Table 7: Camshaft part numbers
Description Mazda Part #
Intake Cam L3E3-12-420
Exhaust Cam L309-12-441B
b. Camshaft and crankshaft sprockets must not be modified; see Table 8 for part numbers.
shaft Sprocket Part #s
t #
4X0C
425
c. Cam timing must not be altered; chain must be installed as stated in the Mazda Factory Service Manual.
d. OE timing chain (Mazda part # LF7A-12-201) is required; no modification is permitted.
e. OE timing chain components must be used; see Table 9 for Mazda part numbers.
Table 9: Timing Chain Guide Part #s
Description Mazda Part #
Fixed Guide LF01-12-614
Tensioner Guide LF01-12-671
6.8. Valves
a. OE valves must not be modified (including reshaping); see Table 10 for Mazda part numbers.
le 10: Valve Part #s
b. Valve location or angle must not be moved.
c. Valve guides may not be replaced.
d. Valve job measurements must be as follows:
1. Intake 35 top 45 seat 65 bottom 77 bottom seating angle width is 1.0mm
2. Exhaust 40 top 45 seating to radius seating angle width 1.2 mm.
3. Valve stem installed height must be per the Mazda Factory Service Manual.
4. Valve stem seals must be OE.
6.9. Valve Springs
a. Mazda Motorsports’ competition valve springs (part # 0000-01-5319-SP) are required.
6.10. Intake Manifold
a. OE intake manifold (Mazda part # LF9G-13-130B) is required; no modification is permitted (e.g., no material may be added or removed; no
painting or coating on the exterior or interior permitted).
b. All air entering the engine must pass through the throttle body and metered by the mass airflow sensor.
c. Removal of these factory EGR components is permitted: Valve, crossover pipe, coolant lines (EGR DELETE KIT 0000-06-5447)
d. If factory EGR components are removed, the following ports must be blocked:
1. Intake manifold cross over pipe port.
2. Cylinder head cross over pipe port.
3. EGR valve port on back of cylinder head.
6.11. Intake System
a. Cars must replace OE air box with the Mazda competition cold air intake kit (part # 0000-06- 5150-KT); no modification (e.g., ducting or
baffling of air, venturi cones) to the cold air intake kit is permitted.
b. No alteration to the intake tube length, diameter, or shape is permitted.
c. The air filter supplied in the Mazda Motorsports competition cold air intake kit may be refreshed
with the Mazda Motorsports’ competition air filter (part # 0000-06-5204).
6.12. Fuel System
a. Fuel must comply with SCCA GCR section 9.3.25
b. OE fuel pump (Mazda part # LFG1-13-350) is required; no modification is permitted.
c. It is permitted to remove the unleaded fuel restrictor from the filler neck. (GCR 9.3.26)
d. Mazda Motorsports’ competition fuel rail that includes fuel pressure gauge, and fuel sampling test port and hose kit (part #
0000-06-5207) is optional.
1. Fuel pressure sensor integrated into the required AIM data acquisition system is required. It must be operational and able to be
viewed when pulling a competitor on track data.
2. The addition of a switch or jumper located in the under-hood fuse box is allowed to acti- vate the fuel pump. This modification may
serve no other purpose.
3. One operational fuel sample test port is required. Fuel sample test ports shall be made from dry break fuel rated quick disconnects.
No other style of fuel sample test port is allowed (e.g., Schrader valves).
4. No other modifications permitted.
e. OE fuel pressure regulator (Mazda part # LFB6-13-280) is required.
1. Vehicle must run between 54 and 63 PSI of fuel pressure.
f. OE injectors (Mazda part # L3G5-13-250) are required; no modification is permitted.
1. Flow rates for the injectors must fall within the factory tolerance of 204-216ml (204-216 cc, 12.5-13.1 cu in/minute).
6.13. Lubrication System
a. OE engine oil filter is required; no substitutions permitted.
b. OE oil pump PT# L310-14-100J is required and no modifications are permitted.
c. Mazda Motorsports’ competition oil cooler adaptor kit with lines (part # 0000-01-5100KT) is required; no modification is
permitted.
d. Oil pressure sensor integrated into the required AIM data acquisition system is required. It must be operational and able to be
viewed when pulling a competitor on track data.
e. Oil and lubricants are unrestricted.
6.14. Engine Control Unit (ECU)
a. Reference penalties for non-compliance of the Spec ECU flash in Section 21 below. Modifica- tion or attempted modification of
the Spec ECU flash will result in a 12-month suspension from competition and $1,000.00 fine.
b. Mazda Motorsports’ competition ECU (part # 0000-01-5379) is required; serial number must be visible; external or internal
modification is not permitted.
c. ECU calibrations and inputs must not be modified.
d. OE engine electrical harness (part # NH18-67-020A) is required; no modification is permitted.
e. OBDII diagnostics port must be operational in all cars.
1. The check engine light must be operational and perform the function test at start up.
2. The OBDII port must be available at all times (including during the race) for tech officials to install test equipment as necessary.
3. If a competitor uses the OBDII port to power any type of data acquisition system, he/she would be responsible for providing the
splitter cable to plug in both units or unplug the data acquisition system.
f. Instrument panel clusters must be operational and unmodified OE parts.
g. Temporary data acquisition devices may be installed by the sanctioning body for technical compliance.
h. Removal of Mazda ECU insulator PT# LFG1-13-3C1 is permitted (diagram below)
6.15. Miscellaneous
a. The factory air conditioning system and all associated lines, compressor, condenser and evap- orator must be removed.
1. Once the AC compressor is removed, the OE AC pulley delete kit (Mazda part # LF17-15- 940E) is required.
b. Serpentine belt Gates PT# 6PK-2170 or same size equivalent is required.
7. Exhaust
a. OE exhaust manifold and OE heat shield must be replaced with Mazda Motorsports’ competi- tion part # 0000-06-5407-NC; no modification
is permitted (e.g., internal or external wraps, coatings, paints, metal treatments, thermal barriers etc.).
b. OE exhaust system must be replaced with Mazda Motorsports’ competition part # 0000-06- 5427-NC; no modification is permitted (e.g.,
internal or external wraps, coatings, paints, metal surface treatment, thermal barriers etc.).
c. The forward oxygen (O2) sensor (OE Lambda Sensor) must remain in the factory location and in full working order. Mazda Motorsports’
competition O2 sensor installation kit wiring extender (part # 0000-10-5320) is permitted.
d. The secondary post catalytic oxygen (O2) sensor must be removed.
e. Heat shielding
1. OE heat shield protecting ABS unit from header may not be removed or modified.
2. OE muffler heat shield may not be removed or modified.
3. It is permitted to wrap the exhaust pipe from the mid connection flange to the muffler.
(see red arrows in picture below)
4. Use of heat shielding material on transmission tunnel to replace OE heat shielding is permitted. OE heat shielding
must be removed from transmission tunnel. (see diagram below)
8. Cooling System
(cooling system
checklist)
a. Mazda Motorsports’ competition radiator and oil cooler assembly (part # 0000-01-5504-CR) is required (e.g., OE is not
permitted).
b. The radiator using the OE mounting brackets must be installed in its original location.
c. The oil cooler may not be moved or altered from the pre-assembled mounting location.
d. Radiator ducting may be placed on each side of the radiator tanks and the undertray to force air through the radiator fins. The
gap between the top and sides of the radiator may be sealed but shall not perform any other function.
e. The unmodified OE cooling fan must be maintained in full working order and mounted in the stock location. Axillary control of
the radiator cooling fan may be added to activate the fan independent of the ECU, OE control of the fan must remain intact.
f. Thermostats may be modified, removed or replaced.
g. The OE water pump (Mazda part # 1F70-15-100) is required; no modification is permitted.
h. The OE water pump pulley (Mazda part # L327-15-131) is required; no modification is permitted.
i. Engine cooling system hoses and clamps may be substituted.
j. The heater core may be removed along with HVAC evaporator core including all associated hard pipes and hoses. This is to include
OE water to oil cooler lines as well as throttle body coolant lines. (Rear coolant pipe 0000-01-5514, bottom coolant pipe 0000-
01-5515)
k. The OE engine coolant expansion tank may be replaced with any aftermarket part but and must not serve another purpose.
9. Clutch, Pressure Plate and Flywheel
a. Vehicle may use any combination of the options listed in Table 11 below.
Table 11: Clutch Component Part Numbers
Description Mazda Part #
Mazda Factory Clutch Disc LF05-16-460A
ACT Sprung Clutch Disc 0000-02-5420-AC
ACT Pressure Plate 0000-02-5405-AC
ACT Clutch and PP Kit 0000-02-5004-G6
Mazda Factory
Pressure Plate LF04-16-410A
b. The unmodified pressure plate must be bolted directly to the stock, unmodified flywheel.
c. OE flywheel (Mazda part # LF9G-11-500) is required. Factory Service Manual resurfacing specification is permitted; no
other modification is permitted.
d. Alternate clutch lines are permitted but must not serve another purpose.
e. Clutch components must adhere to the minimum weights listed in Table 12 below:
Table 12: Clutch Component Part Numbers
Description Minimum Weight (lb.)
Clutch disc 3.5
Pressure Plate 9.4
Flywheel 15.80
10. Transmission
a. OE 2006-2015 6-speed gearbox and 4.10 final drive ratio are required.
b. No modification of the internal parts and ratios are permitted except the installation of the unmodified parts contained in the Mazda
Motorsports MX-5 transmission upgrade kit (part # 0000-02-5700).
c. Mazda Motorsports Competition gear set 0000-02-6000 is allowed. Gear ratios are as follows: 1st - 3.82; 2nd - 2.26; 3rd - 1.64;
4th - 1.18; 5th - 1.00; 6th - 0.83/0.79. There are two (2) production 6th gears; either one is permitted.
d. Alternate shift knobs are permitted.
e. Nomex or aftermarket fireproof shift boots are permitted. Removal of the factory rubber shift boot is not permitted.
f. No treating, coating, polishing or modification of any transmission or components are permitted.
g. Fluids and/or lubricants may be substituted with any lubricant.
h. Updating or backdating of transmissions from 2006–2015 is permitted; unmodified OE shifters must be retained. The use of short throw
shifters is prohibited.
i. An single inspection hole (not to exceed 1.5” in diameter) in the bottom of the bell housing is permitted for the sole purpose of technical
inspection of the flywheel. It is permitted to plug or tape over theat hole.
j. Transmission cooler(s) are permitted.
11. Differential
a. Only the Following differentials are allowed.
1. Mazda Motorsports, unmodified, Torsen limited slip differential – 0000-02-5564
2. OE, unmodified, limited slip differential - Mazda part # MS03-27-200B
3. OE, unmodified, open differential are permitted.
b. RX-8 differential mounting bracket (Mazda part # F151-39-730B) is permitted.
c. Mazda Comp diff bushings 0000-04-5510 is permitted (MX-5 diff mount)
d. Polishing, metal treatment or coating of differential or axle components are not
permitted.
e. Removal of metal/rubber isolator on the pinion flange is permitted.
f. Differential cooler(s) are permitted.
12. Suspension and Steering: Suspension
Modifications are limited to the addition of the Mazda Motorsports Spec MX-5 kit; details are as follows (including all
modifications permitted):
a. OE control arms are required; no modification is permitted.
b. Mazda Motorsports’ TSB MX-5-002 must be followed re: the rear shock thread protector found in the “Spec MX-5: Four Pillars”
page on MazdaMotorsports.com. The thread protector must measure 1.250”. (The TSB will not be applicable to the supply from
Mazda Motorsports received after 7.15.2020 as they will have the updated thread protector.)
c. Anti-roll bar links may be replaced with Mazda part # 0000-04-5597-KT
1. Cockpit adjustability is not permitted.
d. Mazda Motorsports’ competition sway bars are required, mounting guidelines:
1. Metal shims up to 1/8” total thickness are permitted between each anti-roll bar mount shackle and the stock mounting
point on the chassis.
2. One end of the sway bar(s) may be disconnected as a suspension tuning aid.
3. The bar must remain in place and be solidly attached to the suspension on one end.
4. Sway bar end links must be installed on the unmodified stock attachment points.
e. Camber, caster, and toe are unrestricted within the limits of the unmodified factory adjust- ments in conjunction with Mazda
Motorsports front offset bushing (part # 000-04-5407-NC).
f. Minimum ride height is unrestricted.
g. Nuts & bolts may be replaced by similar items performing the same fastening function(s).
h. Relocation or reinforcement of any suspension parts or mounting points is not permitted, with the following exceptions:
1. Addition of spacers or washers on a horizontal plane is permitted at the rear lower shock mount to the spindle per the
shock installation instructions.
2. Updating to RX-8 rear toe link and rear trailing arm is permitted. See Table 13 below.
Table 13: Permitted RX-8 Trailing Arm and Toe Link Part #s
Description Mazda Part #
RX-8 Trailing Arm F189-28-200A
RX-8 Toe Link F189-28-45XA
i. OE power steering pump with pulley (Mazda part # NE51-32-650D) is required; Mazda Motor- sports Power steering flow
restrictor PT#- 0000-04-5532 is permitted; no other modification is permitted.
j. OE power steering rack (Mazda part #: NE51-32-110C) is required; no modification or reloca- tion is permitted.
k. Factory power steering reservoir may be replaced.
l. Wheel center caps must be removed.
m. All chassis, structural and electrical repairs must follow factory procedures, specifications, and dimensions as described in the
applicable service manual. Reinforcement (e.g., seam welding, material addition, etc.) is not permitted.
n. Steering lock mechanisms must be removed.
o. The distance from the outside of the wheel rim to outside of the opposing wheel rim for both the front and rear of the vehicle
must not exceed 69.5”.
I. The distance Measurement is obtained by measuring the distance between the wheel lips by going through
the wheel spokes at the bottom of the wheel at its widest point via tape measure. (Measure the outside wheel
lip of one wheel to outside wheel lip of the other wheel on same axle.)
p. Mazda Motorsports’ competition rear toe link (part # 0000-04-5426) is permitted; no modification is permitted.
q. Mazda Motorsport’s Spec MX-5 Suspension Kit includes the items set forth in Items in Table
14. seen below are components within this kit. No substitutions or modifications of parts are permitted. The
unmodified kits must be used in their entirety, except as specified.
Table 14: Spec MX-5 Suspension Kit (All parts are required; no modification is permitted.)
Description Location Mazda Part #
Shocks Front 0000-04-5291-SA
Rear 0000-04-5292-SA
Springs Front 0000-04-9700-08
Rear 0000-04-9400-07
Helper Springs Front/Rear 0000-04-9926
Front Penske
Mount Kit Front 0000-04-5359
Rear Penske
Mount Kit Rear 0000-04-5358
Sway Bar Kit Front and Rear 0000-04-5306-EB
Offset Bushings Front 0000-04-5407-NC
13. Hubs
a. OE RX-8 front hub (Mazda part # F189-33-04X) may be substituted in place of the OE Miata 2006-2015 front hub.
b. Mazda Motorsports’ competition RX-8 rear hub upgrade kit (part # 0000-04-5811-KT) may be substituted in place of the OE MX-
5 rear hubs; this unmodified kit must be used in its entirety.
c. OE RX-8 rear uprights, bearings, hubs, and hybrid axel may be used in place of OE MX-5 parts.
14. Brakes
a. OE brake rotors must be used and adhere to the specifications below in Table 15.
Table 15: Brake Rotor Dimensions
Location Diameter Notes
Front 290mm (11.4”) Vented
Rear 280mm (11.0”) Solid
Front backing plates/dirt shields may be removed.
(see see red arrow in diagram below)
b. Rear backing plates/dirt shields may be removed.
(see red arrow in diagram below)
c. Brake lines may be replaced with competition braided steel lines; option: Mazda Motorsports’ part # 0000-03-5212.
d. The Factory ABS system must remain intact, unmodified, and in full working order.
e. Brake slider pin may be used in either/both front location B25D-33-694. (This prevents a stuck sliding caliper due to the rubber
grommet)
f. Parking brake mechanisms and actuating components may be removed.
g. Brake fluid is unrestricted.
h. Mazda Motorsports’ competition brake duct kit (part # 0000-03-5301) is permitted.
i. The forward vertical inner fender panels may be modified to fit the brake kit hose to the fog light openings but may not be
modified to serve any additional purpose.
j. Mazda Motorsports’ competition brake pads are required; see eligible brake pad compounds in Table 16. No other brake pads
are permitted.
Table 16: Brake Pad part numbers
Pad Style Mazda Part # Notes
Front Pad 0000-03-5104-SP RST-3 compound
Rear Pad 0000-03-5116-29 RSL-29 compound
15. Wheels
The following unmodified wheel options below in Table 17 are permitted for use.
Table 17: WHEELS
Description Color Mazda Part #
17x7” OE Wheel Gun Metallic 99656-47070
17x7” OE Wheel Silver 99656-77070
Mazda Motorsports’ Competition MX-5 Wheel Gun Metallic 0000-04-5706-GM
Mazda Motorsports’ Competition MX-5 Wheel Silver 0000-04-5706-SL
a. Wheels may be painted.
b. Aftermarket (any) wheel studs and lug nuts are permitted., provided that a minimum of two he threads must protrude
beyond the lug nut with the wheel installed with a minimum of two (2) full threads showing; Wheel studs may not be gun
drilled.
c. Wheel spacers are not permitted.
16. Tires
a. Dry tires: Toyo RR P235/40/ZR17
b. Wet tires: Toyo RA1 P235/40/ZR17.
17. Electrical Equipment
a. OE ignition coils (Mazda part # L3G2-18-100B) are required; no modification is permitted.
b. Mazda’s competition spark plugs (part # 0000-10-R7IX-11) are required; no modification is permitted.
c. The crankshaft position sensor and crankshaft pulley relationship must be as specified in the 2006- 2015 MX-5 Factory Service Manual.
d. One of the two OE alternators (Mazda part # LF9H-18-300R-OA, L3P9-18-300D) is required; no modification is permitted.
e. The alternator must not be externally regulated or disabled in any way other than by the OE
production ECU/wiring circuit and master kill switch.
f. The electronic control module (ECM) control circuit for alternator charging must be OE - unmodified and operational.
g. One of the two OE alternator drive pulley part # AJ51-18-W10 (60mm), Part# L813-18- W11(55mm) is required; no modification
is permitted.
h. All sensors related to engine operating parameters must be used and must be stock, unmodi- fied Mazda parts for the correct year
of the vehicle on which they are installed.
i. Any and all sensors and their respective locations, mounts, and wiring harness leads may not be altered except as elsewhere in this
rule set. e Spec-MX-5 rules.
j. Any sensors required for non-OE gauges must be in addition to the Mazda sensors.
k. All alternate gauge and sensors must have independent wiring. Splicing, tapping, or altering
of the factory engine wiring harnesses is prohibited with the exception of adding an
aftermarket tachom- eter/shift light as follows:
1. It is permitted to splice into the yellow wire with the black stripe (pin 2BA - Ignition
Coil 1 control circuit) in the engine harness to obtain the tachometer signal for an
aftermarket tachometer or shift light.
2. Splicing must be done within 5” of the ECU.
l. Data acquisition’s sensor(s) may be added, provided they do not require splicing or
alteration to the factory engine wiring harness.
m. Batteries
1. Batteries may be replaced with those of an alternate manufacturer, provided they are of
similar amp-hour capacity, and size, including lead acid or AGM.; lLithium batteries are not
permitted.
2. Batteries must weigh no less than 18.0lb and no more than 35.0lb
3. Additional battery hold-down devices are recommended.
4. Battery MUST be moved from the original location to the passenger side
in the upper trunk area in front of the tail lamp. This will require the use
of a bulkhead that separates the driver / passenger compartment
completely from the trunk and the battery location. See section 5.I for
reference.
18. Roll Cage
a. Roll cage must adhere to SCCA’s current GCR Section 9.4 for Touring 4 cars; with the following exceptions:
1. One tube not to exceed 1.75” in diameter may be added which extends from the door bars to the rocker panel on each side.
The landing plate for this tube can be no longer than 5” in length. The landing plates must be centered between the front
and rear landing plates for the lower NASCAR or X brace bar.
2. Main hoop mounting plates may be on multiple planes; however, they must not be greater than 19” on any side.
b. Playboy MX-5 Cup car cages manufactured by Racing Cages, Inc. with the official serial number plate on the main hoop are
allowed to retain the lower door bar and two 3” attachment points to the rocker panel on both the driver’s side and passenger
side. No additional seam welding or lengthening of the original attachment points is allowed.
19. Safety
a. An electrical master (“kill”) switch is required. See current GCR Section 9.3 Master Switch.
b. Vehicle must be equipped with a driver’s restraint system meeting the specifications of current GCR Section 9.3 Drivers
Restraint System.
c. Installation of a fire extinguisher or fire system is required. See current GCR 9.3 Fire System.
d. Vehicle must have a driver’s side window safety net complying with current GCR Section 9.3 Window Safety Nets. Nets must be
mounted to provide protection in the event the driver’s door opens.
20. Data
Acquisition
1 A technical evaluation process for cars is available from the Series. Part of this process is the required download of AiM Data files after
each timed session (Qualifying 1 & 2, Races 1 & 2). Within 30 minutes of each timed session end, all Series Competitors MUST send
the AiM Data file (.XRK) for all timed laps of that session to the secure email address (data@specmx-5.com), where data will be
reviewed by AiM directly. Failure to adhere to this guideline from the Series, or having non- functioning data, may be grounds for
penalty or disqualification by the Series.
a. Vehicle must be equipped with current generation AiM data acquisition system (configurable in Race Studio 3) that can provide
on track data to AiM race studio 3. The data acquisition system may only read the OBDII/ECU data stream. It is not permitted
to alter/manipulate data to and from the ECU. The AiM system may be utilized to trigger a switch I.E., cooling fans or diff cooler
pumps but must be wired via a separate analog circuit.
Refer to Section 17: Electrical Equipment above for installation requirements.
b. The connection at the OBDII port for the AiM system may be made in either one of two ways:
1. Through a dedicated OBDII AiM adaptor.
2. By direct wiring to the back of the OBDII port within 3” of the ODBII connector.
c. Fuel pressure datalogging is required.
d. Oil pressure datalogging is required.
e. All cars must run the latest AIM Data Logger Spec MX-5 ECU Protocol
21. Mandatory
Video
Camera
Cars running in Spec MX-5 must have a functioning video recorder/camera during all qualifying and race sessions as described in 9.3.11.
Upon request by an SCCA official, competitors must provide their video recording/data, which may be used by the SCCA for any
purpose including but not limited to rule enforcement and marketing. Failure to comply with a video request from an official, or
having a non-functioning video recorder/camera may will be grounds for penalty or disqualification.
22. Parts
Confiscation
a. Tech officials may confiscate competitors’ parts for the purpose of verification of tech compliance.
23. Penalties Clarification – Non-Compliant Parts
Level Infraction Penalty
1 Non-compliant modification to any of the spec
parts, engine components, ECU/Elec- tronics or
modification to the chassis.
May suspend the driver (i.e. suspend) of the non-
compliant Spec MX-5 from competing in SCCA
events for the 12 months following the suspension.
A level 1 infraction carries a $1,000 fine.
2
Non-compliant modification to the suspen- sion or
drivetrain outside of level one infrac- tions: engine,
fuel system, charging system, exhaust, and intake
system.
May suspend the driver (i.e. suspend) of the non-
compliant Spec MX-5 from competing in SCCA
events for the 6 months following the suspension.
A level 2 infraction carries a $500 fine.
3 Use of an unauthorized or non-compliant part,
engine component, ECU/Electronics or chassis or
chassis part.
May suspend the driver (i.e. suspend) of the non-
compliant Spec MX-5 from competing in SCCA
events for the 12 months following the suspension.
A level 3 infraction carries a $1,000 fine
4
Non-compliance (non-modification such as
incorrect part)Use of an unauthorized or non-
compliant for any of the suspension or drive- train
part or component outside of level one infractions:
engine, fuel system, charging system, exhaust, and
intake system.
May suspend the driver (i.e. suspend) of the non-
compliant Spec MX-5 from competing in SCCA
events for the 6 months following the suspension.
A level 4 infraction carries a $500 fine

SM Committee) OE versus OEM Definitons

#36608 from Spec Mazda (SM/SMX · Rule change · TB 24-09 (2024-09 Fastrack)

wordingSMX Mazda MX-5 OE versus OEM definitions clarified in GCR section 9.1.7.1; wording change only.
As printed in Fastrack

In GCR, Replace Section 9.1.7.1 Spec MX-5 (SMX) with the attached:

SM Committee) Shifter Bushing

#36611 from Spec Mazda (SM/SMX · Rule change · TB 24-09 (2024-09 Fastrack)

addedSM and SMX now allow an alternate shifter bushing at the bottom of the shift lever.
As printed in Fastrack

In section 9.1.7.1.D.6.3., add the following:
"k. Alternate shifter bushing located at the bottom of the shift lever is allowed."

SRF Update to Letter 36619 with new Hoosier Contingency Decal Info

#36624 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)

wordingSRF Hoosier contingency decal requirement reduced from four decals in specific locations to three decals with simplified placement.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.f.3, change as follows:
"Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose
to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the
rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including
SCCA Enterprises Per Hoosier's contingency program, three (3) decals are required to qualify for contingency awards. One (1)
decal must be located on each side of the car and one (1) decal must be visible on the front."

AS Mustang transmission ratios

#36662 from American Sedan Committee · Rule change · TB 24-09 (2024-09 Fastrack)

addedAS Mustang GT 05-14 Restricted Prep and 2018- gain alternate transmission ratio options.
As printed in Fastrack

In AS Spec Lines, Ford Mustang GT (05-14) with Restricted Prep Engine, add to Notes as follows:
"Alternate transmission Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68.”
In AS Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows:
"Alternate transmission Ratios 3.24, 2.10, 1.42, 1.00, 0.81, .062."

Applies to Ford Mustang on this page: Michael Kamalian, Gregory Eaton, James Jost

SRF Update SRF3 Air Filter Rule

#36681 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

removedSRF3 air filter rule removes K&N RC-9160 option, specifies Weems P/N WM301020 only.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.2.H.23, change as follows:
"Air Filter: P/N WM301020 or K&N RC-9160"

SRF Update SRF Brake Rotor Thickness

#36687 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

suspension & brakesSRF Wilwood vented rotor minimum thickness increases to 13.25mm, 0.522 inches.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.g, change as follows:
"Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall must be used as delivered with
no machining of any kind. Minimum thickness 12.20mm (0.481”) 13.25mm (0.522”)."

SRF Hoosier Tire Decal Placement

#36739 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

wordingSRF3 Hoosier decal placement changed from four logos on nose and tail to three logos on sides and center front.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.2.B, change as follows:
"Mandatory identification: "SRF3" near the side car numbers. "Hoosier" logo (4) on both sides front lower outer corners of the
nose and each side of the tail. Three (3) "Hoosier" logos, one (1) on each side of the car and one (1) on the center front of the car."

T4 Bop Request 06-11 Honda Civic Si

#37013 from Mathew Milford · Rule change · TB 24-11 (2024-11 Fastrack)

In T4 Spec Lines, Honda Civic Si (06-11), add to Notes the following:
"LSD is permitted according to category rules."

T4 Redundant Verbiage Regarding Mustang Spec Lines for Driveshaft

#36484 from David Mead · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, change Notes as follows:
Ford Mustang V6 (11-14): "Alternate driveshaft is allowed."
Ford Mustang Boss 302 (12-13): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (11-14): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (15-17): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (2018-): "Alternate driveshaft is allowed. Springs up to 800#/in front and rear permitted. Alternate
metallic driveshaft permitted."
Ford Mustang Coupe GT & Shelby GT 4.6L (05-10): "Alternate driveshaft is allowed."

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In T3 Spec Lines, change Notes as follows:
Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10): "Alternate driveshaft is allowed."
Ford Mustang V6 (11-14): "Alternate driveshaft is allowed."
Ford Mustang V6 (05-10): "An Aluminum driveshaft is allowed."

T4 R53 Mini Cooper S Weight Reduction Request

#36612 from Manvinder Singh · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, Mini Cooper S R53 (02-06), add to Notes as follows:
"Alta 15% Pulley #AMPENG20X allowed."

T4 Allowable Wheel Offset

#36855 from Robert Maples · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR Section 9.1.9.2.D.7. Wheels and Tires, change as follows:
"a. Wheels
1. Any type wheel suitable for competition may be used, provided:
a. Any wheel not exceeding the specified diameter and rim width on the vehicle’s specification line may be used. Each wheel,
measured without weights, must weigh at least 15 lbs.
b. Wheels are permitted any offset provided the tire tread (that portion of the tire that contacts the ground) does not protrude
beyond the fender opening when viewed from 9.1.9.2.Touring (T2-T4) Category Specifications GCR - 660 the top perpendicular
to the ground, unless specified differently on the individual spec line for that car. To determine compliance the vehicle should be

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rolled through a powdered substance, as raced with driver, in order to indicate the tire tread contact patch under static
conditions. When a maximum tire size is listed on a vehicle’s specification line, aspect ratio is open and any tire may be used that
does not exceed the stated maximum section width.
c. Cars equipped with lug bolts may convert to wheel studs and lug nuts.
d. Wheel studs may be replaced with longer studs as necessary to fit optional wheels. Wheel spacers may be used for purposes
of adjusting track.
e-T4 only: (unless specified on spec line) Any aftermarket wheel with a minimum weight of 15 lbs allowed."

SM E&O SMX Regs 9.1.7.1.D.5.u-.w

#37070 from Greg Amy · Rule change · TB 24-12 (2024-12 Fastrack)

wordingSMX OE instrument cluster must stay unmodified and connected; aftermarket dash allowed if wiring only re-routed; alternate gauges now permitted; foot pedal comfort mods allowed without relocation.
As printed in Fastrack

In GCR, Section 9.1.7.D.5.u-w, change as follows:
"u. Alternate guages and instuments may be added. The original OE instrument cluster must remain unmodified, connected and
functional. However, it may be relocated to allow the mounting of an aftermarket dash such as an AIM. The wiring to relocated
the dash may not be cut or extended, it may only be re-routed. The remainder of teh dashboard or panel must remain intact.
v. Alternate gauges and instuments may be added.
w. Modifications may be made to the foot pedals to improve the comfort and accessibility to the driver; relocation of mounting
points is not permitted.
1. Dead pedal/footrest and heel stop may be added.
w. Instrument clusters must be unmodified parts."

T4 Fuel Emissions Components

#37076 from Derrick Ambrose · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section 9.1.9.2.D.1.c. add the following:
"5. Removal of ancillary fuel tank equipment charcoal canisters, emissions valves, and sensors allowed for OEM or aftermarket
fuel cell installations."

T4 2019-2024 Mazda 3 for T4

#37077 from Derrick Ambrose · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, classify Mazda 3 (19-24), as follows:

A specification table follows in the original; it is not shown here.

Applies to Mazda NC on this page: Ayden Rose

T4 fix brake wording

#37129 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section, 9.1.9.2.D.6. Brakes, change as follows:
"a. Components
1. The make and material of brake pads and linings may be changed.
2. Brake fluid may be substituted with any brake fluid.
3. Brake rotor dust shields may be removed or replaced to accommodate brake ducts.
4. Flexible rubber brake lines may be replaced with Teflon lined, metal braided hoses.
5. Any brake ducts are permitted, but they must serve no other purpose. Fender liners may be modified solely for routing and
attachment of brake ducts. Duct intake openings may be created by the opening of 2 sections up to 14.5 square inches each in

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the front fascia. The stock headlamp location is not permitted for brake ducting. Two alternative duct openings may be created
by the removal of the fog lights or 2 sections up to 14.5 square inches each of stock false grills originally located in the front
fascia.
6. Stock replacement brake rotors may be obtained from sources other than the manufacturer provided they are the exact
equivalent of the stock rotors. In T2 only - 2-piece rotors with ferrous metal rotor disks and aluminum hats are allowed, must be
within 5% of OE diameter. In T3 only - 2-piece front rotors with ferrous metal rotor disks and aluminum hats are allowed, must
be within 2% of OEM diameter. Drilled and slotted rotors are permitted.
7. Parking brakes, mechanisms, and actuating components may be removed.
8. Brake vacuum reservoirs sized 0.50 gallons or smaller are permitted. The port or fitting at the vacuum source may not be
modified, enlarged or relocated. The vacuum reservoir and brake booster must be a closed system."

T4 Evaporative emissions systems

#37130 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section, 9.1.9.2.D.1.c., add the following:
"5. Removal of ancillary fuel tank equipment; charcoal canisters, emissions valves, and sensors allowed for OEM or aftermarket
fuel cell installations."

T4 Allow Spec MX5 upgrade kit for 2009-11 RX8 S2 Transmision

#37140 from Chris Braunlich · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, add the following to Notes:
Mazda RX-8 Base/R3/Sport/ GT (04-12): "Transmission kit # 0000-02-5700 permitted.
Mazda MX-5 / Club Model (06-15): "Transmission kit # 0000-02-5700 permitted."
In T3 Spec Lines, add the following to Notes:
Mazda MX-5 / Club Model (06-15): "Transmission kit # 0000-02-5700 permitted."
Mazda RX-8 Base/R3/Sport/ GT (04-12): "Transmission kit # 0000-02-5700 permitted."

T4 Move Spec Boxster to T4

#37158 from Rob Piekarczyk · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, classify Porsche Spec Boxster, as follows:

A specification table follows in the original; it is not shown here.

T4 3.7 Mustangs to T4

#37188 from Scotty B White · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, classify Ford Mustang V6 (05-14), as follows:

A specification table follows in the original; it is not shown here.

Applies to Ford Mustang on this page: Scotty B White, Paolo Salvatore

T4 BMW 320i Spec Line

#37204 from chi ho · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, BMW 320i (14-15), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal** Turner Motorsports intercooler #024703TMS02 allowed."

T4 MX5 2006-2015 NC Help

#37221 from Richard Mooney · Rule change · TB 24-12 (2024-12 Fastrack)

Thank you for your letter. Please see changes in letter #37281 in current Fastrack.

T4 Classification for a 2005 Cadillac CTS 3.6 liter 6 speed manual

#37224 from Timothy Nash · Rule change · TB 24-12 (2024-12 Fastrack)

In T3 Spec Lines, classify Cadillac CTS (02-07) as follows:

T4 Civic SI in T4

#37248 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, Honda Civic Si (06-11), change as follows:
Required Restrictor: "55mm flat plate restrictor required."
Min Weight: "2950 2900"
Notes: "The following items must remain stock: transmission differential - unless specified below. 55mm flat plate restrictor
required. LSD IS PERMITTED ACCORDING TO CATEGORY RULES"

T4 2006-2015 T4 NC Mx5 spec line

#37278 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, Mazda MX-5 / Club Model (06-15), change Notes as follows:
"Factory bolt-in roll bar/cross member may be removed to facilitate roll cage installation. MSR option permitted. Suspension
package permitted with a 100 lbs. weight increase that includes the following parts: front spring mount PT#-0000-04-5259, front
springs #0000-04-9700-08, rear spring mount PT#-0000-04-5258, rear springs #0000-04-9400-07, helper springs #0000-04-HLPR-
EB (optional), Swaybar kit – PT#-0000-04-5306-EB that includes (front sway bar kit PT#0000-04- 5306-FT, rear sway bar kit PT#-
0000-04-5306-RR), offset front camber bushing PT#-0000-04- 5407-NC. Mazda Motorsports cold air intake part #0000-06-5150-
KT allowed. Mazda Motorsport RX8 rear Hub Conversion kit part number 0000-04-5811-KT allowed, RX8 front hubs PT# F189-33-
04X allowed. The SM5 suspension (only) is allowed with a 100 lbs. weight increase. Allow Mazda header part numbers 0000-06-

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5407 or 0000-06-5407-NC. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including Mazda
hardtop and part #0000-07-5901- CC. Aftermarket power steering reservoir is allowed. Mazda Transmission kit part # 0000-02-
5700. Mazda Motorsports LSD #3265 5 0000-02-5564 permitted without penalty. Any other non-OEM limited slip differential
allowed with +50 lbs. weight penalty. Front spoiler permitted (NF51-V4-900F)."

Applies to Mazda MX-5 on this page: Marc Cefalo, Robert Spence, Kevin Fryer, Richard Mooney, Sergio Zlobin

T4 ND MX-5 wheel allowance

#37279 from Josh Smith · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), change Wheel Size as follows:
"17 x 7.5"

T4 T4 BOP

#37281 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change as follows:
Required Restrictor: "60mm 59mm"
Weight: "3125 3200"
In T4 Spec Lines, Mazda MX-5 / Club Model (06-15), change weight as follows:
"2600 2550"

Applies to Mazda RX-8 on this page: Marc Cefalo

Applies to Mazda MX-5 on this page: Marc Cefalo, Robert Spence, Kevin Fryer, Richard Mooney, Sergio Zlobin

T4 Allow 7.5

#37286 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), change Wheel Size as follows:
"17 x 7.5"

AS Increase Coyote Engine Restrictor to 80mm

#36177 from Gregory Eaton · Rule change · TB 25-01 (2025-01 Fastrack)

faster · engineAS Ford Mustang and Cobra Coyote engine restrictor increases to 80mm from 67mm or 64mm.
As printed in Fastrack

In AS Spec Lines, add to Notes as follows:
Ford mustang (GT 05-14): "Gen 1- 67mm Gen 2-64mm"
Ford mustang (GT 05-14): "Gen 1- 67mm"
Ford mustang (GT 15-17): "Gen 1- 67mm"
Ford mustang (GT 94-04): "Gen 1- 67mm Gen 2-64mm"
Ford mustang cobra & Cobra R Mercury Capri (79-93) (79-86): "Gen 1- 67mm Gen 2-64mm"

AS Performance Pack for 2015+ Mustang

#36867 from Michael Kamalian · Rule change · TB 25-01 (2025-01 Fastrack)

faster · engineAS Mustang GT 05-14 Restricted loses 300 lbs engine; 15-17 and 2018+ models lose 61mm and 60mm restrictors respectively.
As printed in Fastrack

In AS Spec Lines, Ford Mustang Coupe GT (05-14) Restricted Prep., change Notes as follows:
"The 4.6L engine assembly has a weight reduction of 300 lbs. 5.0L/6spd engine/trans: track pack front and rear spoiler allowed."
In AS Spec Lines, Ford Mustang Coupe GT (05-14) with Restricted Prep. engine, change Notes as follows:
"Max. Wheel Size: Dia.18.0 inches. Stock brakes or alternate Ford 14” Brembo Brake (Ford Racing Kit #M-2300-S) and full prep
brake package may be used. Either engine may be used. 1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l
Coyote 15-17 61mm FPR Cold Air Intake allowed Charge Motion Control Valves can be blocked off and removed for firewall
clearance Allow Cold Air Intake Tremec Magnum transmission may be used P/N- TUKT16901. Full Prep Transmissions rule
package may also be used. Max compression ratio, 11.2:1 track pack front and rear spoiler allowed. Alternate transmission
Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68."
In AS Spec Lines, Ford Mustang GT 5.0l (15-17) Restricted Preparation, change Notes as follows:
"Max. Wheel Size: Dia. 18.0 inches. Stock brakes or alternate Ford Brembo Brake caliper (Ford Racing Kit #M-2300-S) may be
used. 61mm flat plate restrictor required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation
of a safety fuel cell. 11” wide wheels can be used until 3/1/25. Performance pack front and rear spoiler, body kit allowed."
In AS Spec Lines, Ford Mustang GT 5.0L (2018-), change Notes as follows:
"Package Brembo front BBK and 380mm rotors permitted (Ford PN M-2300-V) at no weight penalty. 60mm flat plate restrictor
required. 2014 Mustang GT exhaust manifolds permitted. Ford Racing oil pan #M-6675-M50BR permitted. Alternate
transmission Ratios 3.24, 2.10, 1.42, 1.00, 0.81, .062. Performance pack front and rear spoiler, body kit allowed."

Applies to Ford Mustang on this page: Michael Kamalian, Gregory Eaton, James Jost

T4 2016-2018 Mazda Miata MX5

#37085 from Nic Piekarski · Rule change · TB 25-01 (2025-01 Fastrack)

In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), change Min Weight as follows:
"2650 2575"
In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), add to Notes the following:
"Mazda header 0000-06-5410 allowed."

AS Gear Ratios

#37131 from Timothy White · Rule change · TB 25-01 (2025-01 Fastrack)

addedAS class: multiple American muscle cars gain additional allowed gear ratio options across model years and prep levels.
As printed in Fastrack

In AS Spec Lines, change Gear Ratios as follows:
Cadillac CTS-V (04-07):
"2.97, 2.07, 1.43,1.00, 0.84,0.56 or 3.01, 2.07, 1.43, 1.0, .84, .57 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33, 1.00"
Chevrolet Camaro, Pontiac Firebird (70-81), Full Prep:
"3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61, or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00"
Chevrolet Camaro, Pontiac Firebird (70-81), Restricted Prep.:
"3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61, or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00"
Chevrolet/Pontiac Camaro & Firebird (82-92) Full Prep:
"3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33,
1.00"
Chevrolet/Pontiac Camaro & Firebird (93-02) Full Prep:
"3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00,0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00,
0.68 or 2.20,1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81"
Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted prep:
"2.97, 2.07, 1.43, 1.00, 0.80, 0.62 or 3.36, 2.07, 1.35, 1.00, .80, .62 or 2.66, 1.78, 1.30, 1.00, 0.74, 0.50 or 2.88, 1.91, 1.33, 1.00 or
2.20, 1.64,1.28,1.00"
Chevrolet Camaro SS (V8) (10-15) Restricted Prep:
"3.01, 2.07, 1.43, 1.0, .84, .57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Chevrolet Camaro (10-15) Full Prep:
"3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00, 0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00,
0.68 or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81"
Chevrolet Camaro (16-) Full Prep:
"3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00, 0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00,
0.68 or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81"
Chevrolet Camaro, 1LE (16-):
"2.66,1.78,1.30, 0.74,.50 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2 valves/cylinder:
"2.97, 2.1, 1.46, 1.00, 0.74, 0.50 or 2.26, 1.58, 1.19, 1.00, 0.77, 0.63 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) Full Prep:
"3.07, 1.72, 1.00, 0.70 or 2.95, 1.94, 1.34, 1.00, 0.63 or 3.35, 1.99, 1.33, 1.00, 0.68 or 2.87 1.89 1.28 1.00 0.81"
Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) with Restricted Prep Engine:
"2.95, 1.94, 1.34,1.00, 0.63 or 3.35,1.99,1.33, 1.00, 0.69 or 2.88, 1.91, 1.33, 1.00 or 3.27,1.98, 1.34, 1.00, 0.68, 3.66, 2.43, 1.69,
1.32, 1.00, .68. or 2.87,1.89,1.28,1.00,.81"
Ford Mustang Including Cobra 94-04 Full Prep:
"3.07, 1.72, 1.00, 0.70 or 2.95, 1.94, 1.34, 1.00, 0.63 or 3.35, 1.99, 1.33, 1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34,
1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 or 2.20, 1.64,1.28,1.00 or 2.87 1.89 1.28 1.00 0.81"
Ford Mustang Cobra and GT 94-95 (Restricted Prep):
"3.35, 1.99, 1.33, 1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang including Cobra 96-04 (Restricted Prep) 4.6L two and four valve motor:
"3.35, 1.99, 1.33, 1.00, 0.68 or 3.27, 1.98, 1.34, 1.00, 0.67 or 3.37, 1.99, 1.33, 1.00, 0.68 or 3.38, 2.00, 1.32, 1.00, 0.68 or 2.88,
1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang GT (05-14) Full Prep:
"3.38, 2.00, 1.32, 1.00, 0.68 or 3.66, 2.43, 1.69,1.32, 1.00, 0.65 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang GT 5.0l (15-17) Restricted Preparation:
"3.66, 2.43, 1.69,1.32, 1.00, .65 or 4.69, 2.98,2.14, 1.76,1.52, 1.27,1.00, 0.85, 0.68, 0.63, or 3.24, 2.10, 1.42, 1.00, 0.81, .062. or
2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang GT 5.0L (2018-) Restricted Preparation:
"2.97, 2.07, 1.43, 1.00, 0.84, 0.57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Pontiac GTO (04-06) Restricted Prep.
"2.97, 2.07, 1.43, 1.00, 0.84, 0.57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"

AS ECU specs for LS engine

#37208 from Gary Mathews · Rule change · TB 25-01 (2025-01 Fastrack)

added · engineAS LS-engine cars gain ECU freedom: CTS-V, Camaro, Firebird (70–02) and Camaro SS may use any ECM.
As printed in Fastrack

In AS SPEC LINES, Cadillac CTS-V (04-07) Restricted Prep., change Notes as follows:
"Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the
stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Tremec TR6060
Transmission with 3.0 1, 2.07, 1.43, 1.0, .84, .57 ratios permitted. 11” wide wheels can be used until 3/1/25. Any ECM may be
used."
In AS SPEC LINES, Chevrolet Camaro, Pontiac Firebird (70-81) Restricted Prep ., add to Notes as follows:
"Any ECM may be used."
In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V-8 LS1, add to Notes as follows:
"Any ECM may be used."
In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep.5.7L V-8 LT1, add to Notes as follows:
"Any ECM may be used."
In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep. 5.7L V-8 LT1; 98-02 , change Notes as follows:
"5.7L LS1:
GM Performance Parts camshaft Kit P/N-19355738 is permitted. Cylinder Bore, 99 mm; Stroke, 92 mm; Intake Valve Diameter,
50.8; Exhaust Valve Diameter, 39.4 mm; Throttle Body Bore, 75 mm; SLP Intake Lid (SLP part number 21044 (98-99) and 21045
(00-02)) is permitted.
Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the
stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.
1-3/4 headers allowed. For the LS1connecting rods Callies P/NCSC6100DS6A2AH, Scat rods P/N2-1CR6100-944, GM performance
rods P/N12649190. Any ECM may be used."
In AS SPEC LINES, Chevrolet Camaro SS (V8) (10-15) Restricted Prep., add to Notes as follows:
"Any ECM may be used."

Applies to Chevrolet Camaro Z-28 on this page: Phillip Waters

T4 Remove spec lines that have expired

#37269 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T2, Effective 1/1/2025, delete for following Spec Lines in their entirety:
"Acura TL SHAWD (10-13)
Audi S4 (12-14)
Audi S5 (13-14)
Audi TT RS (2018-)
Cadillac ATS-V (16-17)
Cadillac CTS-V (06-07)
Chevrolet Camaro SS (98-02)

Show 49 more lines

Honda Civic Type-R (2017-)
Saturn Sky / Convertible (07-09)"
In T3, Effective 1/1/2025, delete for following Spec Lines in their entirety:
"Audi TTS Coupe (10-11)
Cadillac ATS (2015)
Chevrolet Cobalt (05-07)
Dodge SRT-4 (03-05)
Ford Fiesta ST (2014-)
Hyundai Genesis Coupe (2010-)
Hyundai Veloster Turbo (18-21)
Mini Cooper S (2016-)
Toyota Camry (11-15)"
In T4, Effective 1/1/2025, delete for following Spec Lines in their entirety:
"Acura Integra GS-R VTEC (3 or 4 door) (94-01)
Audi A4 V-6 (96-01) / Volkswagen Passat 2.8 V6 (96-05)
Chevrolet Cobalt SS, Sport Coupe (06-10)
Chevrolet Sonic RS (2011-)
Chrysler/Dodge Neon ACR SOHC (4 door) (01-02)
Dodge Dart (14-15)
Dodge/Plymouth Neon ACR SOHC/DOHC (2/4 door) (95-99)
Fiat 500 Abarth (12-14)
Ford Focus SVT (02.5-04)
Ford Focus ZX4 ST (05-06)
Ford Focus (08-11)
Ford Mustang V-6 (01-04)
Honda Accord LX & EX (03-07)
Honda Accord LX-S/EX/EX-L (08-12)
Honda Civic Coupe Si (99-00)
Honda Civic SI (02-03)
Hyundai Elantra GLS (11-12)
Hyundai Tiburon V-6 (03-08)
Hyundai Veloster Turbo/ R-Spec (14-15)
Kia Forte Koup and Sedan LX/EX (10-13)
Kia Forte Koup and Sedan SX (10-13
Kia Forte Koup (14-15)
Mazda Protégé ES (2000)
Mazda Protégé 5 (02-03)
Mazda6 s (03-07)
Mitsubishi Eclipse GT (00-05)
Nissan Sentra SER (02-03)
Pontiac Firebird V-6 (96-02)
Scion tC (03-07)
Subaru Impreza (non-turbo) (04-06)
Toyota Celica GT (00-05)
Toyota Celica GTS/GT (00-05)
Volkswagen Golf TDI (2010)
Volkswagen Passat (12-14)
Volkswgen Passat TDI (12-14)
Volkswgen Passat 1.8T (2014-)"

T4 Ford Mustang V6 (05-14)

#37516 from Touring Committee · Rule change · TB 25-02 (2025-02 Fastrack)

In T4 Spec Lines, Ford Mustang V6 (05-14), change as follows:
Final drive: "3.45"
Notes: "GT/CS front bumper cover #AR3Z-17D957-BA, allowed if used with front fascia."

Applies to Ford Mustang on this page: Scotty B White, Paolo Salvatore

T4 Request to Classify Club Spec in Appropriate Touring Classes

#37523 from Andrew Benagh · Rule change · TB 25-02 (2025-02 Fastrack)

In T3 Spec Lines, classify Ford SCCA Club Spec Mustang (CSM) as follows:

A specification table follows in the original; it is not shown here.

Applies to Mazda MX-5 on this page: Marc Cefalo, Robert Spence, Kevin Fryer, Richard Mooney, Sergio Zlobin

AS Race memo

#37902 from American Sedan Committee · Rule change · TB 25-03 (2025-03 Fastrack)

wordingAS removes 'Any ECM maybe used' note from five Cadillac and Chevrolet/Pontiac V8 Restricted Prep models.
As printed in Fastrack

In AS Spec Lines, change Notes as follows:
Cadillac CTS-V (04-07) Restricted Prep. 6.0L V8 (Aluminum block, Aluminum heads), LS2, 2 valves/cylinder:
"Any ECM maybe used."
Chevrolet Camaro, Pontiac Firebird (70-81) Restricted Prep. 6.2L V8 (Aluminum Block, Aluminum Heads), 2 valves per cylinder:
"Any ECM maybe used."
Chevrolet/Pontiac Camaro & Firebird (82-92)s 5.7L V-8 LS1 (Aluminum Block, Aluminum Heads) 2 valves per cylinder:
"Any ECM maybe used."
Chevrolet/Pontiac Camaro & Firebird (93-02):
"Any ECM maybe used."
Chevrolet Camaro SS (V8) (10-15) Restricted Prep. 6.2L V8 (Aluminum Block, Aluminum Heads), 2 valves per cylinder:
"Any ECM maybe used."

Super Tour Mar 2025 → Super Tour Mar 2026 2025-03-07 to 2026-03-06

AS Flotek Head Plunge Cut Inconsistencies

#37502 from Pamela Richardson · Rule change · TB 25-04 (2025-04 Fastrack)

wordingAS Flotek head value seat cutting dimensions figure updated for consistency.
As printed in Fastrack

In GCR, Section 9.1.6., replace Figure 1 Value Seat Cutting Dimensions with the following:

AS Notes clean up

#37693 from American Sedan Committee · Rule change · TB 25-04 (2025-04 Fastrack)

wordingAS class notes cleaned: fuel cell and ECM specifications removed from multiple Camaro, Firebird, Challenger and Mustang variants.
As printed in Fastrack

In AS Spec Lines, change/add to Notes as follows:
Cadillac CTS-V (04-07):
"Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the
stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used. The
Drive Shaft Shop, Axle shaft part #'s 510220/510221 permitted."
Chevrolet Camaro, Pontiac Firebird (70-81) Full Prep:
"Engine built to A/S Build Sheet specifications with the following: Head Casting #s: 14101081, 14014416 Port Volume (Max.): 081
casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb. weight reduction. Edelbrock Cylinder Head Part
#s 608979, 608879."
Chevrolet Camaro, Pontiac Firebird (70-81) Restricted Prep.:
"Any ECM maybe used."
Chevrolet/Pontiac Camaro & Firebird (82-92) Full Prep.:
"Engine built to A/S Build Sheet specifications with the following: Head Casting #s: 14101081, 14014416 Port Volume (Max.): 081
cast¬ing: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb weight reduction. Edelbrock Cylinder Head Part
#s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s 19300955,
19300956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake
manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor.
All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98,
1.34, 1.00, 0.68 are permitted. Flo Tek Head part #102-500 are permitted."
Chevrolet/Pontiac Camaro & Firebird (82-92) Restricted prep engine:
"Any ECM maybe used."
Chevrolet/Pontiac Camaro & Firebird (93-02) Full Prep:
"Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.):
081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb weight reduction. Edelbrock Cylinder Head
Part #’s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s
19300955, 19300956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed
between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side
of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00
or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell. Flo Tek Head part #102-500 are permitted."
Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep:
"Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the
stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used."
Chevrolet Camaro SS (V8) (10-15) Restricted Prep:
"Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the
stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used."
Chevrolet Camaro (10-15) Full Prep:
"Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.):
081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 200 lb weight reduction. Edelbrock Cylinder Head
Part #’s 608979, 608879 are permitted. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are
permitted. Fuel cells must be located within 24 inches of the standard tank. The 24-inch measurement is taken from the
perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Flo Tek
Head part #102-500 are permitted. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel
cell."
Chevrolet Camaro (16-) Full Prep:
"Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.):
081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 200 lb weight reduction. Edelbrock Cylinder Head
Part #’s 608979, 608879 are permitted, Flo Tek Head part #102-500 are permitted."
Chevrolet Camaro, 1LE (16-):
"60mm flat plate restrictor required. Any ECM maybe used."
Dodge Challenger (08-20) Restricted Preparation:
"80mm flat plate restrictor is required on the 6.4L engine. Fuel cells must be located within 24 inches of the standard tank. The
24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell."
Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) Full Prep:
"Engine built to A/S Build Sheet specifications with the following: Head Casting #s: F3ZE AA (GT40), F1ZE-AA (GT-40), F77E-AA
(GT- 40P), Port Volume (Max.): 143.00cc IN/54.00cc EX (GT-40 & GT-40P) with a 250 lb weight reduction. Edelbrock Cylinder
Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s
M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186
installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on
each side of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91,
1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Flo Tek Part # 203-500 are permitted."
Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri(79-86) with Restricted Prep Engine:
"62mm flat plate restrictor is required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang Including Cobra 94-04 Full Prep:
"Engine built to A/S Build Sheet specifications with the following: Head Casting #s: F3ZE AA (GT40), F1ZE-AA (GT-40), F77E-AA
(GT- 40P), Port Volume (Max.): 143.00cc IN/54.00cc EX (GT-40 & GT-40P) with a 250 lb weight reduction. Edelbrock Cylinder
Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s
M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186
installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on
each side of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91,
1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Flo Tek Part # 203-500 are permitted."
Ford Mustang GT (94-04) with Restricted Prep Engine:
"MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang Cobra and GT 94-95(Restricted Prep):
"1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66,
2.43, 1.69, 1.32, 1.00, .68. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang including Cobra 96-04 (Restricted Prep):
"1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66,
2.43, 1.69, 1.32, 1.00, .68. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang Coupe GT (05-14) Restricted Prep.:
"1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66,
2.43, 1.69, 1.32, 1.00, .68. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted. MT82 6 speed is permitted."
Ford Mustang GT (05-14) with Restricted Prep Engine:
"1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66,
2.43, 1.69, 1.32, 1.00, .68. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted. MT82 6 speed is permitted."
Ford Mustang GT 5.0l (15-17) Restricted Preparation:
"61mm flat plate restrictor required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement
is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety
fuel cell. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang GT 5.0L (2018-):
"60mm flat plate restrictor required. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."

SRF Driver Safety & Comfort

#37966 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)

addedSRF drivers with disabilities may modify seat and controls for safety and comfort with SCCA approval, noted in logbook, for that driver only.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.D, add the following:
"f. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These
modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the
noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard
configuration."

SRF Update SADEV transmission specs

#37992 from Club Racing Board · Rule change · TB 25-04 (2025-04 Fastrack)

wordingSRF SADEV-SRF3 6-speed sequential transmission: effective date clarified to 1 April 2025 onward.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.2.K, change as follows:
"OR
SADEV-SRF3 6-Speed Sequential (beginning from Oct. 4, 2021 onward):
1st 12-36 3.0000 : 1
2nd 15-31 2.0667 : 1
3rd 18-28 1.5556 : 1
4th 22-28 1.2727 : 1
5th 24-26 1.0833 : 1
6th 25-23 0.9200 : 1
Final Drive Ratio: 15-48 3.20"

SM Clarify Tire Marking Regs

#38005 from Greg Amy · Rule change · TB 25-05 (2025-05 Fastrack)

wordingSM tire marking rules clarified: one Hoosier SM 7.5 P205/50/ZR17 set per Super Tour weekend, impound after first dry session, damaged tires may be replaced with used tires only.
As printed in Fastrack

In GCR Section 9.1.7.C.1.6.c., change as follows:
"1. A mandatory impound for all SMX competitors will occur after the first dry qualifying or race session. All tires will be marked
for the remainder of the race weekend. It is the competitor’s responsibility to report to impound and ensure their tires are
marked prior to leaving impound. SM cars are limited to one set of Hoosier SM 7.5 P205/50/ZR17 per Hoosier Super Tour event
weekend for all dry qualifying and race sessions. This limitation does not include testing or practice sessions. Approved rain tires
will not be required to be marked.
2. A mandatory impound for all SM competitors is required after the first dry qualifying or race (if rain in qualifying) session. It is
the competitor’sresponsibility to ensure their tires are marked prior to going on track for the next session. A mandatory impound
for all SM competitors will occur after the first dry qualifying or race session. All tires will be marked for the remainder of the
race weekend. It is the competitor’s responsibility to report to impound and ensure their tires are marked prior to leaving
impound.
3. If a competitor damages a tire or wheel, and there is a safety concern, the competitor must find the Hoosier Super Tour Series
Tech Chief or SM CCC, if assigned, for inspection. At the direction of the Hoosier Super Tour Series Tech Chief or SM CCC, the
competitor will be allowed to substitute alternate used tire(s) to replace the damaged tire(s). New tires are not an option as a
replacement tire for a damaged tire If a competitor damages a tire or wheel and there is a safety concern, the competitor must
find the Hooseir Super Tour Series Tech Chief or SMX CCC, if assigned, for inspection. At the discretion of the Hoosier Super
Tour Series Tech Chief of SMX CCC the competitor may be allowed to substitute alternate used tires(s) to replace the damaged
tire(s). New tires are not an option as a replacement tire for a damaged tire."

T4 Correct Ring and Pinion Ratio to T3, Sorry I Mean T4 3.7 V6 Stang

#38041 from David Mead · Rule change · TB 25-05 (2025-05 Fastrack)

In T4 Spec Lines, Ford Mustang V6 (05-14), add to Notes the following:
"GT 8.8 rear axle assembly allowed. 3.45 or 3.55 final drive ratio allowed. 7.5 rear axle assembly with 3.45:1 final drive allowed."

Applies to Ford Mustang on this page: Scotty B White, Paolo Salvatore

AS Errors and Omission

#38055 from American Sedan Committee · Rule change · TB 25-05 (2025-05 Fastrack)

slower · inductionAS Ford Mustang GT 5.0L 15-17 flat plate restrictor reduces from 67mm to 64mm.
As printed in Fastrack

In AS Spec Lines, Ford Mustang GT 5.0l (15-17), Flat Plate Restrictor Size, change as follows:
"67mm 64mm"

T4 T4 Mustang

#38058 from Scotty B White · Rule change · TB 25-05 (2025-05 Fastrack)

In T4 Spec Lines, Ford Mustang V6 (05-14), add to Notes as follows:
"OEM style rear deck spoiler similar to Laguna/CS packages permitted.”

Applies to Ford Mustang on this page: Scotty B White, Paolo Salvatore

AS Request to Add LS1/LS6 Intakes for 5.3L Truck Engine EnO

#38197 from Jim Clark · Rule change · TB 25-05 (2025-05 Fastrack)

addedAS LS1/LS6 intakes added for 5.3L truck engine: part numbers 12561269 and 88894095.
As printed in Fastrack

In GCR, Section 9.1.6.F., add the following to Intake Part #’s:
"17113697, 19418185, 89017230, 89017363, 89017364, and 89017365, 12561269 and 88894095"

T4 T4 Mustang

#38059 from Scotty B White · Rule change · TB 25-06 (2025-06 Fastrack)

In T4 Spec Lines, Ford Mustang V6 (05-14), change as follows:
Final Drive: "3.45 or 3.31"
"Weight: "3400 3300"

Applies to Ford Mustang on this page: Scotty B White, Paolo Salvatore

T4 SSC tire allowance

#38216 from Benjamin Bunk · Rule change · TB 25-06 (2025-06 Fastrack)

In T4 Spec Lines, Scion FR-S Solo Spec Coupe (13-16), change Notes as follows:
"Any 200TW 225/45/17 or 215/45/17 DOT tire permitted."
In T4 Spec Lines, Subaru BRZ Solo® Spec Coupe (13-16), change Notes as follows:
"Any 200TW 225/45/17 or 215/45/17 DOT tire permitted."

Applies to Subaru BRZ on this page: Angelica Sprehe

AS Errors and Omissions

#38234 from American Sedan Committee · Rule change · TB 25-06 (2025-06 Fastrack)

addedAS Ford Mustang GT 05-14 Restricted Prep Engine gains additional gear ratio option: 3.66, 2.43, 1.69, 1.32, 1.00, .65.
As printed in Fastrack

In AS Spec Lines, Ford Mustang GT (05-14) with Restricted Prep Engine, add to Gear Ratios the following:
"or 3.66, 2.43, 1.69, 1.32, 1.00, .65"

Applies to Ford Mustang on this page: Michael Kamalian, Gregory Eaton, James Jost

SM SMX Data Submission - Penalties

#38248 from Kathy Barnes · Rule change · TB 25-06 (2025-06 Fastrack)

addedSMX drivers must submit data acquisition files on time or face suspension and $250 fine.
As printed in Fastrack

In GCR, Section 9.1.7.1.23 add new level 5 infraction as follows:
Level: "5"
Infraction: "Failure to successfully submit (received by data@specmx-5.com) data acquisition file to data@specmx-5 per the
timeframes outlined in GCR section 9.1.7.1.20."
Penalty: "May suspend the driver (i.e. suspend) of the Spec MX-5 that failed to submit data on time or at all from competing in
SCCA events for the 3 months following the suspension.
A level 5 infraction may carry a $250.00 fine."

SM Committee) SMX Penaly Clarification updated language

#38337 from Spec Mazda (SM/SMX · Rule change · TB 25-06 (2025-06 Fastrack)

wordingSMX penalty language clarified: level 1 and 3 infractions may carry $1,000 fines, level 2 and 4 may carry $500 fines.
As printed in Fastrack

In GCR, Section 9.1.7.1.23. change as follows:
Rename as follows: "Penalties Clarification – Non-Compliant Parts SMX Penalty Guidelines"
Change the Penalty language for level 1 to the following: "A level 1 infraction carries may carry a $1,000 fine."
Change the penalty language for level 2 to the following: "A level 2 infraction carries may carry a $500 fine."
Change the penalty language for level 3 to the following: "A level 3 infraction carries may carry a $1,000 fine."
Change the penalty language for level 4 to the following: "A level 4 infraction carries may carry a $500 fine."

AS RE: Previous Letter 37695 Update

#38245 from Michael Kamalian · Rule change · TB 25-07 (2025-07 Fastrack)

faster · weightAS Ford Mustang GT 5.0 2018- minimum weight reduced to 3525 lbs.
As printed in Fastrack

In AS Spec Lines, Ford Mustang GT 5.0 (2018-), change Weight as follows:
"3600 3525"

Applies to Ford Mustang on this page: Michael Kamalian

T4 Allow B-Spec cars to run in T4

#38439 from Derrick Ambrose · Rule change · TB 25-07 (2025-07 Fastrack)

In GCR, Section 9.1.9.2, Touring car eligibility, change as follows:
"Touring car eligibility: Cars are eligible for the class they are listed with a specification line and with the specific allowances
permitted. In addition T2-T4 cars may race one class up in touring classes above their specification line class as long as they are a
legal T2-T4 car and conform to their specification line allowances as classified. Cars conforming to B-Spec or C-Spec rules are
permitted to compete in Touring 4."

T4 Incorrect Touring Heading

#38451 from Terry Hanushek · Rule change · TB 25-08 (2025-08 Fastrack)

In T2-T4 Spec Lines, change Table Header as follows:
"T2 ET"

SRF Add HD Oil Cooler

#38979 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)

added · engineSRF3 adds HD Oil Cooler P/N G1148500 option alongside standard P/N G480503, no fan permitted.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.V.ff, change as follows:
"SRF3 Oil Cooler, P/N G480503 or HD Oil Cooler P/N G1148500 may be used as mounted per the GEN3 Assembly Manual. No fan
permitted for SRF. HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual."

AS Cadillac CTS-V BOP Weight Change

#38640 from Alex Lozano · Rule change · TB 25-09 (2025-09 Fastrack)

faster · weightAS Cadillac CTS-V 04-07 Restricted Prep minimum weight drops to 3400 lbs.
As printed in Fastrack

In AS Spec Lines, Cadillac CTS-V (04-07) Restricted Prep., change Weight as follows:
"(Effective 11/1/2025) 3450 3400"

T4 02-06 Mini Cooper Gear Ratios

#38966 from Trenton Kramer · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Mini Cooper S R53 (02-06), change Gear Ratios as follows:
"12.79, 7.79, 5.65, 4.62, 3.83, 3.13 or overall- 11.42, 7.18, 5.39, 4.40, 3.65, 2.96"

T4 Reinstatement of the 2005-2010 Cobalt into T4

#38987 from Tim Little · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, classify Chevrolet Cobalt SS, Sport Coupe (06-10) as follows:

A specification table follows in the original; it is not shown here.

T4 Request to Classify Mercedes C230K

#39080 from Patrick Morgan · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, classify Mercedes C230 Kompressor (2002-2005) as follows:

A specification table follows in the original; it is not shown here.

T4 ND Gearset Request for T4

#39166 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T3 Spec Lines, Mazda MX-5 Miata (16-18), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T3 Spec Lines, Mazda MX-5 Global Cup Miata (2016-2021) ND1, ND, add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."

T4 E&O wheel size on ND

#39168 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), change Wheel Size (in.) as follows:
"17 x 7.5"

T4 ND Spec Lines Wrong PT#'s

#39170 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), change Notes as follows:
"Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. The following item(s) must remain
stock: transmission differential unless specified below. Retractable hardtop option permitted but must be disabled from moving
action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including
Mazda hardtop part #0000-07-5902-ND and part #0000-07-5901 (discontinued DG Motorsports). 29mm (f) 16mm (r) sway bars
allowed. 3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-02,
0000-02-5804-01). Suspension package permitted with a 100 lbs. weight increase that includes the following parts: front springs
#0000-04-9700-08, springs up to 500lb front and 300lb rear allowed. Mazda tower brace 0000-04-5626 allowed. Mazda header

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0000-06-5410 allowed."
In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), change Notes as follows:
"Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. Retractable hardtop option permitted
but must be disabled from moving action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the
OEM roof silhouette, including Mazda hardtop part #0000-07-5902-ND and part #0000-07-5901 (discontinued DG Motorsports).
29mm (f) 16mm (r) sway bars allowed. Up to 500lb front and 300lb rear springs allowed. Mazda Motorsports Header part
#0000-06-5410 allowed. Mazda tower brace 0000-04-5626 allowed. 3rd and 4th gear may be replaced with the following parts-
(0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-02, 0000-02-5."
In T3 Spec Lines, Mazda MX-5 Miata (16-18), change Notes as follows:
"Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. Header permitted. Cold air intake
permitted. Front strut brace permitted. Front and rear sway bars permitted up to 35mm, Springs 800 front and 800 Rear max
permitted. Any OEM or aftermarket hardtop permitted that retains the OEM roof silhouette including Mazda hardtop part
#0000-07-5902- ND and part #0000-07-5901 (discontinued DG Motorsports top). If a hardtop is used, latches shall be replaced
with positive fasteners. Retractable hardtop option permitted but must be disabled from moving action and positively fastened.
In T3 Spec Lines, Mazda MX-5 Global Cup Miata (2016-2021) ND1, ND, change Notes as follows:
"Shoulder harness installation must conform to FIA mounting specifications that are approved for this vehicle per section 6.2 FIA
article 253, safety equipment. Must meet all ND2 MX-5 Global Cup rules. Any OEM or aftermarket hardtop is permitted that
retains the OEM roof silhouette, including Mazda hardtop Mazda hardtop part #0000-07-5902-ND and #0000-07-5902-ND part
#0000- 07-5901 (discontinued DG Motorsports). If a hardtop is used, latches shall be replaced with positive fasteners. OBD2
requirement does not apply. Ballast box may be removed. ND2s with sequential gearbox allowed +100 lbs.

T4 Touring 4 Post-Runoffs BOP Adjustments and Changes

#39251 from Touring Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Acura RSX/ RSX Type-S (02-06), change Restrictor as follows:
"55mm FPR"
In T4 Spec Lines, Acura TSX (2004-2008), change Restrictor as follows:
"47mm FPR 52mm FPR"
In T4 Spec Lines, BMW Z4 2.5L (03-05) , change Weight as follows:
"3050 2950"
In T4 Spec, BMW 320i (14-15), remove this spec line in its entirety.
In T4 Spec Lines, BMW 323 (98-00), change as follows:

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Tire size: "225 245"
Weight: "3250 3150"
In T4 Spec Lines, Ford Mustang V6 (05-14), change as follows:
Restrictor: "50mm 43mm"
Weight: "3300 3400"
In T4 Spec Lines, Honda Civic Si (06-11), change Restrictor as follows:
"55mm"
In T4 Spec Lines, Honda Civic Si (12-15), change as follows:
Restrictor: "47mm 52mm
Notes: "Transmission and Differential must be stock."
In T4 Spec Lines, Mazda MX-5 / Club Model (06-15), change as follows:
Weight: "2550 2500"
Notes: "Factory bolt-in roll bar/cross member may be removed to facilitate roll cage installation. MSR option permitted.
Suspension package permitted with a 100 lbs. weight increase that includes the following parts: front spring mount PT#-0000-
04-5259, front springs #0000-04-9700-08, rear spring mount PT#-0000-04-5258, rear springs #0000- 04-9400-07, helper springs
#0000-04-HLPR-EB (optional), Swaybar kit – PT#-0000-04-5306-EB that includes (front sway bar kit PT#0000-04-5306-FT, rear
sway bar kit PT#-0000-04-5306-RR), offset front camber bushing PT#- 0000-04-5407-NC. Mazda Motorsports cold air intake part
#0000-06-5150-KT allowed. Mazda Motorsport RX8 rear Hub Conversion kit part number 0000-04-5811-KT allowed, RX8 front
hubs PT# F189-33-04X allowed. Allow Mazda header part numbers 0000-06-5407 or 0000-06-5407-NC. Any OEM or aftermarket
hardtop is permitted that retains the OEM roof silhouette, including Mazda hardtop and part #0000-07-5901-CC. Aftermarket
power steering reservoir is allowed. Mazda Transmission kit part # 0000-02-5700. Mazda Motorsports LSD #32655 permitted
without penalty. Any other non-OEM limited slip differential allowed with +50 lbs. weight penalty. Front spoiler permitted
(NF51-V4-900F). Transmission kit # 0000-02-57
In T4 Spec Lines, Pontiac Solstice / Saturn Sky (06-09), change as follows:
Weight: "2800 2700"
Brakes: "(F) 296 315 Vented Disc max (R) 278 Solid Disc"
Notes: "GM calipers #22720705, and #25900764 permitted"
In T4 Spec Lines, Scion FRS/10 series (13-16), change Weight as follows:
"2925 2875"
In T4 Spec Lines, Subaru BRZ/ BRZ Limited (13-16), change Weight as follows:
"2925 2875"
In T4 Spec Lines, Subaru BRZ (17-21), change Weight as follows:
"3000 2950"
In T4 Spec Lines, Toyota 86, GT (17-21), change Weight as follows:
"3000 2950"
SCCA Runoffs

Applies to Ford Mustang on this page: Scotty B White, Paolo Salvatore

Applies to Mazda MX-5 on this page: Marc Cefalo, Robert Spence, Kevin Fryer, Richard Mooney, Sergio Zlobin

Applies to Subaru BRZ on this page: Angelica Sprehe

AS 1994 Mustang Spec Line Request

#39104 from Barry Borgschatz, Jr · Rule change · TB 25-12 (2025-12 Fastrack)

added · engineAS Ford Mustang GT 94-04 Restricted Prep Engine now permits Ford Motorsport M-6250-F303 camshaft.
As printed in Fastrack

In AS Spec Lines, Ford Mustang GT(94-04) with Restricted Prep Engine, add to notes the following:
"Ford Motorsport #M-6250-F303 camshaft is permitted."

Applies to Ford Mustang on this page: Michael Kamalian, Thomas J Ellis

T4 Classing 1995-99 Dodge Neon SOHC

#39285 from Preston Obremski · Rule change · TB 25-12 (2025-12 Fastrack)

In T4 Spec Lines, classify Dodge/Plymouth Neon ACR SOHC/DOHC (2/4 door) (95-99) as follows:

A specification table follows in the original; it is not shown here.

T4 Alternate Placement of Fuse Panel and Electronics Request

#39370 from Aaron Stehly · Rule change · TB 26-01 (2026-01 Fastrack)

In GCR, Section 9.1.9.2.D.9.d, add the following:
"8. Under-dash electronics including computers, modules and fuse boxes may be relocated so they can be easily accessed after
roll cage installation."

AS Restrictor Plate Change for Gen 2 Ford Coyote Engine

#39501 from American Sedan Committee · Rule change · TB 26-01 (2026-01 Fastrack)

slower · inductionAS Ford Mustang and Mercury Capri with Restricted Prep engines get 61 mm restrictor, down from 64 mm.
As printed in Fastrack

In AS Spec Lines, change Restrictor as follows:
Ford Mustang Incl. Cobra and Cobra R (79-93) and Mercury Capri (79-86) with Restricted Prep Engine: "64 mm 61 mm"
Ford Mustang GT (94-04) with Restricted Prep Engine: "64 mm 61 mm"
Ford Mustang Coupe GT (05-14) Restricted Prep 5.0L/6 speed 4 valves per cylinder: "64 mm 61 mm"
Ford Mustang GT (05-14) with Restricted Prep Engine: "64 mm 61 mm"
Ford Mustang GT 5.0L (15-17) Restricted Preparation: "64 mm 61 mm"

T4 Clarify T4 Brake Rotor Allowance

#39503 from David Mead · Rule change · TB 26-01 (2026-01 Fastrack)

In GCR, Section 9.1.9.2.D.6.a.6., change as follows:
"In T2-Performance alternative rotors, including 2 piece rotors are permitted. Rotors must be within 5% of OE diameter or a
maximum diameter of 360mm.
In T3- Performance alternative rotors, including 2 piece rotors are permitted with a maximum diameter of 360mm.
T4- Performance alternative 1-piece rotors are permitted but rotors must meet the sizes listed in the spec line. Spec lines
showing alternate brake kits are also permitted to use 1-piece performance alternative rotors of the same size."

AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request

#39055 from Jason Smith · Rule change · TB 26-01 (2026-01 Fastrack)

addedAS GM LM7 5.3L gains Edelbrock 71187 intake manifold, MSD 6014 ignition box, Holly 4776 carb option under full prep spec line.
As printed in Fastrack

In GCR, Section 9.1.6.D.2.h.2., add the following:
"(Effective 2/1/2026) i. Weight based on full preparation chassis choice spec line for GM LM7 5.3L
Carburetor Option:
Must use the full prep 4776 holly carburetor and spacer gasket
Edelbrock Performer RPM 71187 intake manifold
MSD 6014 ignition box
(Edelbrock part # kit 7118)"

T4 T4 and T3 Feedback

#39230 from Tim Myers · Rule change · TB 26-02 (2026-02 Fastrack)

In T4 Spec Lines, remove Ford Mustang V6 (05-14) in its entirety.

T4 T4 Mustang 4.0

#39489 from Scotty B White · Rule change · TB 26-02 (2026-02 Fastrack)

In T4 Spec Lines, Ford Mustang V6 (05-10), change as follows:
Tire: "245 255"
Notes: "ABS (option code 552) allowed. FR3 Handling Pack #M-2007-FR3V6 allowed (kit does not need to be run in its entirety).
The kit includes: Dampers M-18000-A, Lowering Springs M-5300-N, Sway Bars M- 5490-C, Strut Tower Brace M-20201-F. Ford
Positraction LSD part #M-4204-C75 is allowed. Any springs max F: 500 and R: 400 permitted. Any sway bar up to F: 35mm and R:
28mm permitted. Aftermarket Shocks conforming to T4 rules allowed. Panhard bar, part # BAR-M-4264-A permitted, or any pan
hard bar permitted must be set at same length as a stock bar, center mounting hole to center mounting hole +/- 0.25 inch. An
alternative steel drive shaft is permitted; this drive shaft is otherwise unrestricted, but no modifications to other components

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are permitted to facilitate its installation. An Aluminum driveshaft is allowed. Any LSD permitted. Ford brake kit M-2300-D
allowed. Aftermarket header allowed. GT 8.8 rear axle assembly allowed. 3.45 or 3.55 Alternate final drive ratio allowed. 7.5
rear axle assembly with 3.45:1 final drive allowed. Cold Air Intake allowed. Koni part numbers 8741-1494SPORT (front) and
8241-1240SPORT (rear). Spec clutch #SF661 and flywheel #SF66A permitted. 14” Brembo Brake Kit#M-2300-S permitted."

Applies to Ford Mustang on this page: Paolo Salvatore

T4 Allow Alt Bushing Material in Toe Links

#39607 from David Mead · Rule change · TB 26-02 (2026-02 Fastrack)

In GCR, Section 9.1.9.D.5.a.1., change as follows:
"T2-T4: A maximum of 3.5 degrees of negative camber is allowed on front and rear suspensions. Spec line part(s) may not be
modified to increase caster and camber. Strut suspensions may adjust camber and caster by the use of eccentric bushings,
eccentric bolts (crash bolts) at the strut-to-spindle, and/or by use of slotted adjustment plates at the top of the strut mounting
plate. If upper strut slotted adjustment plates are used, they shall be located on existing chassis structure, utilizing the
unmodified manufacturer’s original bolt holes and may not serve as reinforcement for that structure. Slotted adjustment plates
(strut camber plates) may incorporate a single spherical bearing (spherical bushing) and a ball thrust bearing per strut tower. On
other forms of suspension, camber and caster adjustment may be achieved by the use of shims and/or eccentric

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bushings. Adjustable toe links with spherical bearings are permitted and may serve no purpose other than adjusting toe
angle. Adjustable toe links are permitted. They are allowed to have performance alternative bushings and spherical bearings.
They may serve no purpose other than adjusting toe angle. Spherical bearings/bushings are not permitted in T2-T4 except for the
specific examples listed in the class rules or vehicle spec line."

T4 ND MX-5 Spec Line Rewrite Request

#39802 from Josh Smith · Rule change · TB 26-03 (2026-03 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), change as follows:
Weight: "2750 2650"
Notes: "Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. The following item(s) must
remain stock: transmission differential unless specified below. Retractable hardtop option permitted but must be disabled from
moving action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette,
including Mazda hardtop part #0000-07-5902-ND. 29mm (f) 16mm (r) sway bars allowed. 3rd and 4th gear may be replaced with
the following parts- (0000-02- 5803-02, 0000-02-5803-01, 0000-02-5804-02, 0000-02-5804-01). Suspension package permitted
with a 100 lbs. weight increase that includes the following parts: front springs #0000-04-9700-08, s Suspension

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Permitted: Springs up to 500lb front and 300lb rear allowed. 29mm (f) 16mm (r) sway bars allowed. Mazda tower brace 0000-
04-5626 allowed. Mazda header 0000-06-5410 allowed. Gear kit Kit PT#- 0000-02-6100. 3rd and 4th gear may be replaced with
the following parts- (0000-02- 5803-02, 0000-02-5803-01, 0000-02-5804-02, 0000-02-5804-01). OEM Club Package Brembo
calipers permitted. 2016-2018 chassis/body permitted."
In T4 Spec Lines, Mazda MX-5 Miata/ Club (16-18), change as follows:
Weight: "2575 2550"
Notes: “Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. Retractable hardtop option
permitted but must be disabled from moving action and positively fastened. Any OEM or aftermarket hardtop is permitted that
retains the OEM roof silhouette, including Mazda hardtop part #0000-07-5902-ND 29mm (f) 16mm (r) sway bars allowed. Up to
500lb front and 300lb rear springs allowed. Mazda Motorsports Header part #0000-06-5410 allowed. Mazda tower brace 0000-
04-5626 allowed. 3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-
5804-02, 0000-02-5804- 01). Gear kit Kit PT#- 0000-02-6100 Factory bolt-in roll bar/ cross member may be removed to facilitate
roll cage installation. The following item(s) must remain stock: transmission differential unless specified below. Retractable
hardtop option permitted but must be disabled from moving action and positively fastened. Any OEM or aftermarket hardtop is
permitted that retains the OEM roof silhouette, including Mazda hardtop part #0000-07-5902-ND. Suspension Permitted: Springs
up to 500lb front and 300lb rear allowed. 29mm (f) 16mm (r) sway bars allowed. Mazda tower brace 0000-04-5626 allowed.
Mazda header 0000-06-5410 allowed. Gear kit Kit PT#- 0000-02-6100. 3rd and 4th gear may be replaced with the following
parts- (0000-02- 5803-02, 0000-02-5803-01, 0000-02-5804-02, 0000-02-5804-01). OEM Club Package Brembo calipers
permitted."

T4 4.0 Mustang spec line cleanup

#39831 from David Mead · Rule change · TB 26-03 (2026-03 Fastrack)

In T4 Spec Lines, Ford Mustang V6 (05-10), change Notes as follows:
"ABS (option code 552) allowed. FR3 Handling Pack #M-2007-FR3V6 allowed (kit does not need to be run in its entirety). The kit
includes: Dampers M-18000-A, Lowering Springs M-5300-N, Sway Bars M- 5490-C, Strut Tower Brace M-20201-F. Ford
Positraction LSD part #M-4204-C75 is allowed. Any springs max F: 500 and R: 400 permitted. Any sway bar up to F: 35mm and R:
28mm permitted. Aftermarket Shocks conforming to T4 rules allowed. Panhard bar, part # BAR-M-4264-A permitted or any pan
hard bar permitted must be set at same length as a stock bar, center mounting hole to center mounting hole +/- 0.25 inch. An
alternative steel drive shaft is permitted; this drive shaft is otherwise unrestricted, but no modifications to other components
are permitted to facilitate its installation. An Aluminum driveshaft is allowed. Any LSD permitted. Ford brake kit M-2300-D

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allowed. Aftermarket header allowed. GT 8.8 rear axle assembly allowed. 3.45 or 3.55 final drive ratio allowed. 7.5 rear axle
assembly with 3.45:1 final drive allowed. Cold Air Intake allowed. Koni part numbers 8741-1494SPORT (front) and 8241-
1240SPORT (rear). Spec clutch #SF661 and flywheel #SF66A permitted. 14” Brembo Brake Kit#M-2300-S permitted Any springs
max F: 500 and R: 400 permitted, Any sway bar up to F: 35mm and R: 28mm permitted. Any pan hard bar permitted must be set
at same length as a stock bar, center mounting hole to center mounting hole +/- 0.25 inch. Any alternate metal driveshaft is
allowed. Ford brake kit M-2300-D allowed. 14” Brembo Brake Kit#M-2300-S permitted with OEM 355mm rotors
allowed. Aftermarket header allowed. Cold Air Intake allowed. S197 Mustang 8.8 or 7.5 rear axle allowed with any ratio. Spec
clutch #SF661 and flywheel #SF66A permitted."

Applies to Ford Mustang on this page: Paolo Salvatore

AS Re-Organization of AS Spec lines for 2026

#39887 from American Sedan Committee · Rule change · TB 26-03 (2026-03 Fastrack)

wordingAS Spec Lines reorganized for 2026; detailed chassis, engine, weight, wheelbase, tire and brake specifications moved to main rules and engine build sheets.
As printed in Fastrack

This AS Spec Lines re-organization simplifies the Spec Lines for all drivers. This version gives the chassis information on what
engines can be put in their cars. It removes information that is now repeated in the ruleset and adds engine/weight combos as
well as wheelbase/tire size information. The Notes in the Spec Lines have been reviewed to remove information now listed in
the engine build sheets and retain information pertinent to the chassis selected. Where there is nothing in the notes, it is not an
error. It just means everything a driver needs is now in the main rules or the build sheets.
In AS Spec Lines, delete current Spec Line in its entirety as follows:

A specification table follows in the original; it is not shown here.

SRF SRF3 Spark Plugs

#39899 from Robey Clark · Rule change · TB 26-03 (2026-03 Fastrack)

engineSRF3 spark plugs limited to NGK LTR7IX-11 P/N G301041 only; washers and sealing rings prohibited.
As printed in Fastrack

In SRF, GCR section 9.1.8.D.2.H.18, add the following:
"Spark Plugs: P/N G301041 ONLY NGK LTR7IX-11 / Washers or sealing rings are not allowed for any purpose."

What the rules allowed changed as listed; this does not say what any particular car ran.

Sectors

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.