Lap times across years say as much about the weather as the class. % of AS is each class's best lap as a share of AS's on the same day, so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.
Closest to the field:AS 100.0% of AS Andy McDermid, Daytona International Speedway Runoffs 2015 race · F5 92.2% of AS Wiley Clinton McMahan, Indianapolis Motor Speedway Runoffs 2017 race · FF 92.5% of AS Jonathon Kotyk, Sonoma Raceway Runoffs 2018 race · B-Spec 108.6% of AS Jake Pipal, Sonoma Raceway Runoffs 2018 race
ASF5FFB-Specsolid race · dashed qualifying · slower is lower
ASF5FFB-Specsolid race · dashed qualifying · each class's best lap as a share of AS's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
2:26.911Andrew McDermid · fastest of 8 · top 5 within 3.4s+0.119s (+0.08%)
2:28.471Andrew McDermid · fastest of 8 · top 5 within 2.4s-0.761s (-0.51%)
151.0Andrew McDermid-0.6 mph (-0.4%)
2:23.047David Ybarra · fastest of 20 · top 5 within 1.4s-1.858s (-1.28%)
2:23.686Nathan Down · fastest of 20 · top 5 within 1.6s-1.855s (-1.27%)
138.9Tazio Stefanelli+0.5 mph (+0.3%)
-4.785squal -3.864s
96.8%qual 97.4%
2:51.987Josh Schmidt · fastest of 23 · top 5 within 1.3s-0.224s (-0.13%)
2:51.633Josh Schmidt · fastest of 22 · top 5 within 1.7s-1.980s (-1.14%)
112.5Ricky Holmstrom-0.2 mph (-0.1%)
+23.162squal +25.076s
115.6%qual 117.1%
31 rule changes (AS: 13, FF: 2, B-Spec: 16)4 cars added · 4 suspension & brakes · 4 weight · 2 aero · 2 engine · 2 induction · 2 tyres & wheels · 5 wording · 6 other · AS Camaro 16+ Spec Line: 1LE front splitter kit permitted, belt tensioner and motor mount parts allowed, spark plug position defined. · AS class adds Pirelli P Zero Trofeo Track as permitted tyre option for competition. · AS class rear trailing arms no longer required to maintain stock length, only to locate rear axle. · AS Ford Mustang GT 4.6L 4-valve regains allowance, minimum weight 3200 lbs. · AS Ford Mustang Coupe GT 05-14 Gen3 Coyote minimum weight increases from 3100 to 3400 lbs. · FF Kent 1600 compression ratio calculation parameters reorganized: bore size and valve protrusion limits moved to separate subsections for clarity. · AS GM LM7 5.3L must use full prep Holley carburetor as described in 9.1.6.D.c.1, not specifically 4776. · B-Spec Mazda2 10-14 ECU housing may be trimmed and relocated within the engine bay. · B-Spec and C-Spec Hyundai Accent and Kia Rio models now permit Wilwood 260-10500 reservoir kit. · B-Spec Mini Cooper R56, R56LCI, R55 Clubman, R58 Coupe minimum weights reduced to 2600 lbs with OEM catalyst or 2675 lbs with header. · AS EFI engine build sheets add dry sump, header, camshaft, and timing chain tensioner options for LS, LT1, Ford, and Mopar engines. · AS LT1 Camaro engine build sheet added with full specs; LT1 weight 3200 lbs, GTO tire to 275, Mustang weight to 3525 lbs, oil catch tanks now required. · AS Spec Lines reorganized for 2026; detailed chassis, engine, weight, wheelbase, tire and brake specifications moved to main rules and engine build sheets. · B-Spec Mini Cooper R50 MT gains Getrag GS5BG transmission option with ratios 3.308, 1.913, 1.258, 0.943, 0.806 and 4.352 final drive. · B-Spec exhaust rules clarified: primary catalyst required unless spec permits removal, downstream system free if routing and exit location match OEM. · B-Spec Mini Cooper R56 and R56LCI allowed World Challenge suspension kit. · B-Spec adds approved Walker replacement catalyst part numbers for eight car models. · B-Spec Nissan Versa Sedan/Hatchback 2012–2019 and Toyota Yaris Hatchback/Sedan 2007–2018 may remove primary catalyst. · AS GM LM7 5.3L gains Edelbrock 71187 intake manifold, MSD 6014 ignition box, Holly 4776 carb option under full prep spec line. · C-Spec adds approved rear sway bars for Chevrolet Cruze, Dodge Dart, Ford Focus, Honda Civic, Mazda3i, Mazda 3i, Toyota Corolla models. · AS Ford Mustang and Mercury Capri with Restricted Prep engines get 61 mm restrictor, down from 64 mm. · B-Spec Chevrolet Sonic and Ford Fiesta and Honda Fit Notes sections reorganised for clarity; approved parts listed; no performance changes. · B-Spec: Sonic restrictors removed, Fit MT up 25 lbs to 2550, Fit CVT restrictor removed, Mini Coopers up 2 mm restrictor, Versa sedans down 25 lbs to 2425, Versa 2020+ and IA restrictors removed. · B-Spec Mazda2 10-14 exhaust header cat delete: only Mazda Motorsports PN 0000-06-2410 allowed, no weight adder. · FF clarifies alternative tire eligibility: homologated 1989 or earlier with rocker or outboard suspension all four corners; push-rod/pull-rod cars may seek approval. · AS Ford Mustang GT 94-04 Restricted Prep Engine now permits Ford Motorsport M-6250-F303 camshaft. · AS Cadillac CTS-V 04-07 Restricted Prep minimum weight drops to 3400 lbs. · B-Spec Honda Fit MT 07-08 now permits Torque Solution Shifter Cable Bushing kit TS-SCB-506. · B-Spec Ford Fiesta Hatchback gains 55 lbs to 2525, restrictor opens 39 to 40 mm FPR; Sedan gains 55 lbs to 2525, restrictor opens 38 to 39 mm FPR. · B-Spec Hyundai Accent Sedan and Kia Rio Sedan remove approved Bilstein B8 shock 33-187112 from rear suspension. · B-Spec Honda Fit MT 07-08 gains Bilstein B14 kit 47172401, Progress rear sway bar #62.1060, Injen intake SP1511, Torque Solution shifter cable bushing TS-SCB-506; Runoffs eligibility restriction removed.showhide
AS 2016+ Camaro Spec Line Full Prep #39646otheraddedAS Camaro 16+ Spec Line: 1LE front splitter kit permitted, belt tensioner and motor mount parts allowed, spark plug position defined.
AS Consideration of Pirelli P Zero Trofeo Track for AS Competition #40495tyres & wheelsaddedtyres & wheelsAS class adds Pirelli P Zero Trofeo Track as permitted tyre option for competition.
AS Change in 9.1.6.D.4.d.5 in Suspension Mounting Points #40094suspension & brakesfastersuspension & brakesAS class rear trailing arms no longer required to maintain stock length, only to locate rear axle.
AS Re-Add 4.6L 4v 96-04 Mustang Cobra #40239cars addedaddedAS Ford Mustang GT 4.6L 4-valve regains allowance, minimum weight 3200 lbs.
AS Errors and Omissions #40532weightslowerweightAS Ford Mustang Coupe GT 05-14 Gen3 Coyote minimum weight increases from 3100 to 3400 lbs.
FF Clarification in FF Kent 1600 Compression Ratio Paragraph #40293wordingwordingFF Kent 1600 compression ratio calculation parameters reorganized: bore size and valve protrusion limits moved to separate subsections for clarity.
AS Clarification for LM7 Holley Carburetor #40167wordingwordingAS GM LM7 5.3L must use full prep Holley carburetor as described in 9.1.6.D.c.1, not specifically 4776.
B-Spec ECU Location in Mazda2 #40034otheraddedB-Spec Mazda2 10-14 ECU housing may be trimmed and relocated within the engine bay.
B-Spec Allow Cars With Combined Brake/Clutch Reservoir to Separate. #40122otheraddedB-Spec and C-Spec Hyundai Accent and Kia Rio models now permit Wilwood 260-10500 reservoir kit.
B-Spec Race Memo RM 26-01 B-Spec Mini Cooper Weight Adjustments with OEM #40070weightfasterweightB-Spec Mini Cooper R56, R56LCI, R55 Clubman, R58 Coupe minimum weights reduced to 2600 lbs with OEM catalyst or 2675 lbs with header.
AS Header Information Update for EFI Engine Build Sheets #39886engineaddedengineAS EFI engine build sheets add dry sump, header, camshaft, and timing chain tensioner options for LS, LT1, Ford, and Mopar engines.
AS Errors and Omissions #39933otherfasterAS LT1 Camaro engine build sheet added with full specs; LT1 weight 3200 lbs, GTO tire to 275, Mustang weight to 3525 lbs, oil catch tanks now required.
AS Re-Organization of AS Spec lines for 2026 #39887wordingwordingAS Spec Lines reorganized for 2026; detailed chassis, engine, weight, wheelbase, tire and brake specifications moved to main rules and engine build sheets.
B-Spec Add Getrag GS5BG Transmisson Ratios for Mini R50 #39416cars addedaddedB-Spec Mini Cooper R50 MT gains Getrag GS5BG transmission option with ratios 3.308, 1.913, 1.258, 0.943, 0.806 and 4.352 final drive.
B-Spec Exhaust Rules Update #39669wordingwordingB-Spec exhaust rules clarified: primary catalyst required unless spec permits removal, downstream system free if routing and exit location match OEM.
B-Spec Please reinstate KW suspension for R56 #39727suspension & brakesaddedsuspension & brakesB-Spec Mini Cooper R56 and R56LCI allowed World Challenge suspension kit.
B-Spec Add approved replacement catalysts #39817otheraddedB-Spec adds approved Walker replacement catalyst part numbers for eight car models.
B-Spec Yaris/Versa catalyst removal #39818aerofasteraeroB-Spec Nissan Versa Sedan/Hatchback 2012–2019 and Toyota Yaris Hatchback/Sedan 2007–2018 may remove primary catalyst.
AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request #39055cars addedaddedAS GM LM7 5.3L gains Edelbrock 71187 intake manifold, MSD 6014 ignition box, Holly 4776 carb option under full prep spec line.
B-Spec C-Spec Rear Sway Bars #39652suspension & brakesaddedsuspension & brakesC-Spec adds approved rear sway bars for Chevrolet Cruze, Dodge Dart, Ford Focus, Honda Civic, Mazda3i, Mazda 3i, Toyota Corolla models.
AS Restrictor Plate Change for Gen 2 Ford Coyote Engine #39501inductionslowerinductionAS Ford Mustang and Mercury Capri with Restricted Prep engines get 61 mm restrictor, down from 64 mm.
B-Spec Notes section cleanup #39062wordingwordingB-Spec Chevrolet Sonic and Ford Fiesta and Honda Fit Notes sections reorganised for clarity; approved parts listed; no performance changes.
B-Spec 2026 BOP Recommendations #39475induction +25 lbsunclearB-Spec: Sonic restrictors removed, Fit MT up 25 lbs to 2550, Fit CVT restrictor removed, Mini Coopers up 2 mm restrictor, Versa sedans down 25 lbs to 2425, Versa 2020+ and IA restrictors removed.
FF Formula F Alternative Tire Rule Proposed Clarifications #39281tyres & wheelsaddedtyres & wheelsFF clarifies alternative tire eligibility: homologated 1989 or earlier with rocker or outboard suspension all four corners; push-rod/pull-rod cars may seek approval.
AS 1994 Mustang Spec Line Request #39104engineaddedengineAS Ford Mustang GT 94-04 Restricted Prep Engine now permits Ford Motorsport M-6250-F303 camshaft.
AS Cadillac CTS-V BOP Weight Change #38640weight -50 lbsfasterweightAS Cadillac CTS-V 04-07 Restricted Prep minimum weight drops to 3400 lbs.
B-Spec Alternate Shift Cable Bushings and Rear Spring Seats #38472otheraddedB-Spec Honda Fit MT 07-08 now permits Torque Solution Shifter Cable Bushing kit TS-SCB-506.
B-Spec Fiesta BOP Adjustment #38847weight +55 lbsfasterweightB-Spec Ford Fiesta Hatchback gains 55 lbs to 2525, restrictor opens 39 to 40 mm FPR; Sedan gains 55 lbs to 2525, restrictor opens 38 to 39 mm FPR.
B-Spec Request to Remove Rear Shock From Spec Line Hyundai Accents/Kia #39017suspension & brakesremovedsuspension & brakesB-Spec Hyundai Accent Sedan and Kia Rio Sedan remove approved Bilstein B8 shock 33-187112 from rear suspension.
2:26.792Andrew McDermid · fastest of 11 · top 5 within 3.9s+0.214s (+0.15%)
2:29.232Gregory Eaton · fastest of 10 · top 5 within 4.0s+2.803s (+1.91%)
151.5Andrew McDermid+1.9 mph (+1.3%)
2:24.905Jonathan Kotyk · fastest of 17 · top 5 within 1.1s+2.353s (+1.65%)
2:25.541Calvin Kautz · fastest of 16 · top 5 within 0.5s+3.484s (+2.45%)
138.4Tazio Stefanelli-2.3 mph (-1.6%)
-3.691squal -1.887s
97.5%qual 98.7%
2:52.211Josh Schmidt · fastest of 19 · top 5 within 0.8s+0.184s (+0.11%)
2:53.613Daniel Conway · fastest of 18 · top 5 within 0.4s+1.724s (+1.00%)
112.7Stewart Black-0.4 mph (-0.3%)
+24.381squal +25.419s
116.3%qual 117.3%
38 rule changes (AS: 11, FF: 4, B-Spec: 23)5 engine · 5 suspension & brakes · 3 cars added · 3 weight · 2 induction · 2 tyres & wheels · 1 removed · 10 wording · 7 other · B-Spec and C-Spec remove asterisk from Rule 9.1.10.D.9 public road use note. · B-Spec Honda Fit MT 09-14 may disable two pedal shutdown by cutting or de-pinning pin 42 BKSW at main ECU connector. · B-Spec Honda Fit MT 07-08 restricted to Injen Intake SP1511, cold air intakes no longer allowed; requires three Super Tour weekends and OBDII data collection. · AS Ford Mustang GT 5.0 2018- minimum weight reduced to 3525 lbs. · AS Ford Mustang GT 05-14 Restricted Prep Engine gains additional gear ratio option: 3.66, 2.43, 1.69, 1.32, 1.00, .65. · B-Spec adds Hyundai Accent Sedan (12-17) and Kia Rio Sedan (12-17), both 1591cc, 2525 lbs, 40mm FPR restrictor. · B-Spec Honda Fit MT 09-14 adds allowed Acuity Shifter Base Bushing Kit 1954. · B-Spec Honda Fit AT 09-14 adds Weapon R Intake 301-166-301 as permitted option. · B-Spec and C-Spec shift linkages may now use approved aftermarket bushings; cables and linkage remain stock otherwise. · AS Ford Mustang GT 5.0L 15-17 flat plate restrictor reduces from 67mm to 64mm. · AS LS1/LS6 intakes added for 5.3L truck engine: part numbers 12561269 and 88894095. · B-Spec Hyundai Accent Hatchback corrected to 12-17, Kia Rio Hatchback to 12-15. · B-Spec 07-08 Honda Fit MT minimum weight increases 50 lbs to 2450. · B-Spec Honda Fit 07-08 MT and AT now allow Bilstein B14 kit 47172401. · FF adds rocker arm and outboard suspension cars option to use Hoosier bias ply slicks or VFF tyres; clarifies mixing rules. · AS Flotek head value seat cutting dimensions figure updated for consistency. · AS class notes cleaned: fuel cell and ECM specifications removed from multiple Camaro, Firebird, Challenger and Mustang variants. · B-Spec: Honda Fit cold air intake restricted to three named parts with 25lb adder; Mazda2 exhaust headers allowed with weight adders; Mini Cooper FPR adjusted across six variants; Nissan Versa minimum weight cut 40lb with Injen intake allo… · B-Spec Accent and Yaris get brake-type weight adjustments: drum subtract 25 lb, disc add 25 lb. · B-Spec Hyundai Accent and Kia Rio (12-19) now allow Bilstein B14 kit #47167490 front shocks and BabyFace Fabrication sump extension #BF-HYU-PAN. · AS removes 'Any ECM maybe used' note from five Cadillac and Chevrolet/Pontiac V8 Restricted Prep models. · B-Spec Toyota Yaris Hatchback 12-18 rear brakes now allow 10.2 inch disc option alongside 7.9 drum. · B-Spec Toyota Yaris Hatchback and Sedan may now disconnect speed sensor. · B-Spec Fiat 500 (12-17) spec line expires 1/1/26 unless appeal filed. · FF adds alternative tire options for older cars with rocker arm or outboard suspension: bias ply slicks or VFF radials. · B-Spec and C-Spec remove redundant notes language from Honda Fit AT, Honda Fit CVT, Mazda2, Mini Cooper Hatchback MT and CVT, and Toyota Yaris Hatchback. · B-Spec removes Mini Cooper Countryman R60, Cooper Paceman R61, and Nissan Versa 07-11 and 09-11 spec lines. · B-Spec Nissan Micra Cup Car spec line expires 7/1/25 unless appeal submitted by 6/30/25. · AS Ford Mustang and Cobra Coyote engine restrictor increases to 80mm from 67mm or 64mm. · AS Mustang GT 05-14 Restricted loses 300 lbs engine; 15-17 and 2018+ models lose 61mm and 60mm restrictors respectively. · AS class: multiple American muscle cars gain additional allowed gear ratio options across model years and prep levels. · AS LS-engine cars gain ECU freedom: CTS-V, Camaro, Firebird (70–02) and Camaro SS may use any ECM. · B-Spec and C-Spec replace wheelbase spec with restrictor (mm) effective 2025-01-01; Sonic 33–36, Fiesta 38–39, Fit 31–33, Accent/Rio 41, Mini Cooper 40–46, Nissan Versa 38, Toyota IA/Yaris 38–42. · B-Spec Hyundai Accent and Kia Rio approved for Bilstein B8 shock 33-187112 in rear suspension. · B-Spec Toyota Scion IA Sedan 16-20 allows ST Suspension Kit 13275022; requires three Super Tour weekends and OBDII data collection before Runoffs eligibility. · Honda Fit AT 07-08 B-Spec notes simplified: specific damper, spring, and helper spring part numbers removed; Progress rear sway bar 62.1060 and any cold air intake now allowed. · FF and FC sequential gearbox weight penalty reduces from 25 lbs to 10 lbs minimum weight addition. · FF Honda Fit pistons: OEM 0.25mm oversize PN 13020-RB7-Z00 or Fast Forward PN FF800-110 now both allowed; standard diameter 73.240mm (2.8835 inches), minimum weight 198.0g.showhide
B-Spec Remove Asterisk from Rule 9 #38768wordingwordingB-Spec and C-Spec remove asterisk from Rule 9.1.10.D.9 public road use note.
B-Spec Disabling 2 Pedal Shutdown #38354otheraddedB-Spec Honda Fit MT 09-14 may disable two pedal shutdown by cutting or de-pinning pin 42 BKSW at main ECU connector.
B-Spec Update Honda Fit MT (07-08) Intake Allowance #38530wordingwordingB-Spec Honda Fit MT 07-08 restricted to Injen Intake SP1511, cold air intakes no longer allowed; requires three Super Tour weekends and OBDII data collection.
AS RE: Previous Letter 37695 Update #38245weight -75 lbsfasterweightAS Ford Mustang GT 5.0 2018- minimum weight reduced to 3525 lbs.
AS Errors and Omissions #38234otheraddedAS Ford Mustang GT 05-14 Restricted Prep Engine gains additional gear ratio option: 3.66, 2.43, 1.69, 1.32, 1.00, .65.
B-Spec Add Sedan spec lines for Hyundai & Kia #37537cars addedaddedB-Spec adds Hyundai Accent Sedan (12-17) and Kia Rio Sedan (12-17), both 1591cc, 2525 lbs, 40mm FPR restrictor.
B-Spec Shifter Bushing Questions. #38048otheraddedB-Spec Honda Fit MT 09-14 adds allowed Acuity Shifter Base Bushing Kit 1954.
B-Spec Add Weapon R Intake to Honda Fit MT (09-14) Spec Line #38306inductionaddedinductionB-Spec Honda Fit AT 09-14 adds Weapon R Intake 301-166-301 as permitted option.
B-Spec Update Rule 46 #38307wordingwordingB-Spec and C-Spec shift linkages may now use approved aftermarket bushings; cables and linkage remain stock otherwise.
AS Errors and Omission #38055inductionslowerinductionAS Ford Mustang GT 5.0L 15-17 flat plate restrictor reduces from 67mm to 64mm.
AS Request to Add LS1/LS6 Intakes for 5.3L Truck Engine EnO #38197cars addedaddedAS LS1/LS6 intakes added for 5.3L truck engine: part numbers 12561269 and 88894095.
B-Spec Correct Hyundai/Kia Model Years #37943wordingwordingB-Spec Hyundai Accent Hatchback corrected to 12-17, Kia Rio Hatchback to 12-15.
B-Spec 07-08 Honda Fit MT Requests #37974weight +50 lbsslowerweightB-Spec 07-08 Honda Fit MT minimum weight increases 50 lbs to 2450.
B-Spec Add B14 Kit Part # to Honda Fit (07-08) Spec line #38010suspension & brakesaddedsuspension & brakesB-Spec Honda Fit 07-08 MT and AT now allow Bilstein B14 kit 47172401.
FF Page 228, FF tire rule 9.1.1.10.e #38251tyres & wheelsaddedtyres & wheelsFF adds rocker arm and outboard suspension cars option to use Hoosier bias ply slicks or VFF tyres; clarifies mixing rules.
AS Flotek Head Plunge Cut Inconsistencies #37502wordingwordingAS Flotek head value seat cutting dimensions figure updated for consistency.
AS Notes clean up #37693wordingwordingAS class notes cleaned: fuel cell and ECM specifications removed from multiple Camaro, Firebird, Challenger and Mustang variants.
B-Spec 2025 BOP Recommendations #37520otherotherB-Spec: Honda Fit cold air intake restricted to three named parts with 25lb adder; Mazda2 exhaust headers allowed with weight adders; Mini Cooper FPR adjusted across six variants; Nissan Versa minimum weight cut 40lb with Injen intake allo…
B-Spec Request to Update the Spec line for Hyundai Accent and Kia Rio #37880otheraddedB-Spec Hyundai Accent and Kia Rio (12-19) now allow Bilstein B14 kit #47167490 front shocks and BabyFace Fabrication sump extension #BF-HYU-PAN.
AS Race memo #37902wordingwordingAS removes 'Any ECM maybe used' note from five Cadillac and Chevrolet/Pontiac V8 Restricted Prep models.
B-Spec Toyota Yaris Hatchback (12-18) rear disc brakes #37530suspension & brakessuspension & brakesB-Spec Toyota Yaris Hatchback 12-18 rear brakes now allow 10.2 inch disc option alongside 7.9 drum.
B-Spec Yaris Speed Sensor #37536otheraddedB-Spec Toyota Yaris Hatchback and Sedan may now disconnect speed sensor.
B-Spec Set Expiration Date For Fiat 500 #37689cars addedremovedcars addedB-Spec Fiat 500 (12-17) spec line expires 1/1/26 unless appeal filed.
FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change #37802tyres & wheelsaddedtyres & wheelsFF adds alternative tire options for older cars with rocker arm or outboard suspension: bias ply slicks or VFF radials.
B-Spec Remove Redundant Language from Notes Sections #37337wordingwordingB-Spec and C-Spec remove redundant notes language from Honda Fit AT, Honda Fit CVT, Mazda2, Mini Cooper Hatchback MT and CVT, and Toyota Yaris Hatchback.
B-Spec Expire designated spec lines #37517removedremovedB-Spec removes Mini Cooper Countryman R60, Cooper Paceman R61, and Nissan Versa 07-11 and 09-11 spec lines.
B-Spec Set expiration date for Nissan Micra Cup Cars (Canadian) #37519wordingremovedB-Spec Nissan Micra Cup Car spec line expires 7/1/25 unless appeal submitted by 6/30/25.
AS Increase Coyote Engine Restrictor to 80mm #36177enginefasterengineAS Ford Mustang and Cobra Coyote engine restrictor increases to 80mm from 67mm or 64mm.
AS Performance Pack for 2015+ Mustang #36867enginefasterengineAS Mustang GT 05-14 Restricted loses 300 lbs engine; 15-17 and 2018+ models lose 61mm and 60mm restrictors respectively.
AS Gear Ratios #37131otheraddedAS class: multiple American muscle cars gain additional allowed gear ratio options across model years and prep levels.
AS ECU specs for LS engine #37208engineaddedengineAS LS-engine cars gain ECU freedom: CTS-V, Camaro, Firebird (70–02) and Camaro SS may use any ECM.
B-Spec Remove wheelbase from spec lines and replace with Restrictor #36074enginefasterengineB-Spec and C-Spec replace wheelbase spec with restrictor (mm) effective 2025-01-01; Sonic 33–36, Fiesta 38–39, Fit 31–33, Accent/Rio 41, Mini Cooper 40–46, Nissan Versa 38, Toyota IA/Yaris 38–42.
B-Spec Bilstein Rear Shock Request for Hyundai Accent/Kia Rio #36965suspension & brakesaddedsuspension & brakesB-Spec Hyundai Accent and Kia Rio approved for Bilstein B8 shock 33-187112 in rear suspension.
B-Spec Scion IA/Toyota Yaris/Mazda 2 DY chassis suspension #35780suspension & brakesaddedsuspension & brakesB-Spec Toyota Scion IA Sedan 16-20 allows ST Suspension Kit 13275022; requires three Super Tour weekends and OBDII data collection before Runoffs eligibility.
B-Spec Clean up 07-08 Honda Fit AT Notes Section #36542wordingwordingHonda Fit AT 07-08 B-Spec notes simplified: specific damper, spring, and helper spring part numbers removed; Progress rear sway bar 62.1060 and any cold air intake now allowed.
FF Change FF/FC Weight with Sequential Gearbox #36651weightfasterweightFF and FC sequential gearbox weight penalty reduces from 25 lbs to 10 lbs minimum weight addition.
FF Alternative Oversize Honda Fit Pistons #37064engineaddedengineFF Honda Fit pistons: OEM 0.25mm oversize PN 13020-RB7-Z00 or Fast Forward PN FF800-110 now both allowed; standard diameter 73.240mm (2.8835 inches), minimum weight 198.0g.
2:26.578Gregory Eaton · fastest of 18 · top 5 within 2.6s-0.467s (-0.32%)
2:26.429Gregory Eaton · fastest of 18 · top 5 within 2.5s-1.239s (-0.84%)
149.6Gregory Eaton+0.4 mph (+0.3%)
2:22.552Calvin Kautz · fastest of 13 · top 5 within 1.1s-0.364s (-0.25%)
2:22.057Sebastian Mateo Naranjo · fastest of 13 · top 5 within 0.6s-2.211s (-1.53%)
140.7Calvin Kautz+2.6 mph (+1.9%)
-4.372squal -4.026s
97.0%qual 97.3%
2:52.027Daniel Conway · fastest of 25 · top 5 within 0.7s-0.006s (-0.00%)
2:51.889Rob Piekarczyk · fastest of 25 · top 5 within 0.6s-0.958s (-0.55%)
113.1Joe McClughan+1.5 mph (+1.4%)
+25.460squal +25.449s
117.4%qual 117.4%
43 rule changes (AS: 11, FF: 2, B-Spec: 30)8 cars added · 5 tyres & wheels · 4 suspension & brakes · 4 weight · 2 engine · 2 induction · 1 removed · 11 wording · 6 other · FF EGR blanking plate rule clarified: VTEC activation valve must be retained and functioning, no modifications permitted. · AS Mustang GT 05-14 Restricted Prep and 2018- gain alternate transmission ratio options. · B-Spec restricted to Goodyear Eagle RS dry and RS-R wet P205/50R15 tires; C-Spec 225/45R17 tire mixing prohibition clarified. · B-Spec automatics: Sonic restrictors to 35/36mm, Fit weights to 2350/2500 lbs, Fit CVT restrictor to 313mm, Mini weights to 2500 lbs, Mini restrictors to 35-46mm. · B-Spec and C-Spec hood pins now recommended but not required; factory release cable may be removed if pins used. · B-Spec Chevrolet Sonic and C-Spec Cruze allowed Babyface Fabrication brake caliper pistons SNC-SS and CRZ-SS. · B-Spec Honda Fit MT & CVT (15-19) notes cleaned up: removed obsolete parts, added rear sway bar Progress 62.1063 and CVT transmission cooler Setrab 50-119-7612. · B-Spec Nissan Versa 09-11 spec line expires 1 January 2025 unless appeal filed by 1 December 2024. · B-Spec removes redundant Rule 25 from GCR Section 9.1.10.E, effective 2024-07-01. · B-Spec Hyundai Accent rear brakes change to 10.3 disc; Kia Rio rear brakes change to 10.3 disc. · AS adds 2018-23 Ford Mustang GT 5.0L at 3600 lbs, 275 tire, 60mm restrictor, optional Brembo front brakes. · Chevrolet Sonic Spec lines add Bilstein B14 kit #47-171725 as verified compatible suspension option. · B-Spec and C-Spec: redundant sway bar end link part numbers removed from Mazda2 and eleven Mini Cooper variants' notes. · B-Spec Fiat 500 spec line year range changed from 12-15 to 12-17. · B-Spec Honda Fit CVT 15-19 minimum weight increases to 2550 lbs, intake restrictor to 31 mm. · AS Chevrolet Camaro 1LE (2016-) added with 3600 lbs minimum weight, 275 tires, 60mm restrictor, 345/338mm brakes. · AS 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 Chevrolet Camaro, Firebird, and Ford Mustang now permit Flo Tek cylinder heads in multiple generations. · B-Spec model descriptions standardized: trim levels removed, body styles clarified with consistent wording across Sonic, Fiesta, Fit, Accent, Rio, Versa, and Yaris. · B-Spec and C-Spec wheel rules clarified: tyre tread may not protrude beyond fender opening; wheel spacers allowed equally on all four corners; total offset must match left to right per axle. · AS Camaro, Firebird 93-02 and GTO 04-06 add approved LS1 connecting rod part numbers to Notes. · AS Cadillac CTS-V, Chevy Camaro SS V8, Dodge Challenger, Ford Mustang GT 5.0L, Pontiac GTO allowed 11" wheels until 3/1/25. · B-Spec Honda Fit MT 15-19 restrictor increases 30mm to 31mm, minimum weight rises 2525 to 2550 lbs. · B-Spec and C-Spec gain wheel offset freedom and spacer flexibility; C-Spec wheels now differ per axle, not all four corners. · B-Spec Mini Cooper Countryman R60, Paceman R61, and Nissan Versa 07-11 1797cc expire 1/1/2025 without appeal by 12/1/2024. · Chevrolet 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 class adds fuel cell location notes to multiple Cadillac, Chevrolet, Dodge and Ford models: cells within 24 inches of standard tank. · Chevrolet Camaro 6th gen Full Prep added to AS class at 3400 lbs base or 3600 lbs with built engine. · AS 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… · B-Spec 07-08 Honda Fit Automatic allows rear sway bar Progress #62.1060; manual adds same part. · B-Spec and C-Spec auxiliary transmission cooler approval rule deleted. · B-Spec Chevrolet Sonic 5dr Hatch MT 12-19 allows aluminum radiator #ZZP-ZZ013. · 09-14 Honda Fit MT and AT now have separate spec lines with distinct gear ratios and final drive. · B-Spec Mazda2 10-14 minimum weight increases 70 lbs to 2350, headers and parts equalized effective 3-1-2024. · B-Spec Nissan Versa and Versa Note 2013–2019 permitted Hardrace HR-Q0146 19mm rear sway bar. · B-Spec Hankook tires allowed at regionals only through June 30, 2024; Goodyear becomes sole legal tire July 1, 2024. · B-Spec Nissan Versa Note Hatchback minimum weight drops 60 lbs to 2490; sedan line expanded to 2012–2019; 2013+ model deleted. · B-Spec and C-Spec clarify ECU must be unaltered OE, no altering devices allowed in grid to post-impound, and data acquisition systems expanded with new sensor types permitted. · FF Honda Fit gains Fast Forward oversize piston ring option PN FF800-100 as alternative to Riken or Nippon. · C-Spec Mazda 3i 2010-2013 5-speed manual third gear ratio changes from 3.84 to 1.84. · C-Spec Dodge Dart 14-16 displacement corrected to 1998 cc, bore and stroke to 88.0 x 82.0 mm. · B-Spec adds Goodyear Eagle RS dry and wet tires; Hankook restricted to regional events from 2024.showhide
FF Update to FF EGR Blanking Plate Rule #36633wordingwordingFF EGR blanking plate rule clarified: VTEC activation valve must be retained and functioning, no modifications permitted.
AS Mustang transmission ratios #36662otheraddedAS Mustang GT 05-14 Restricted Prep and 2018- gain alternate transmission ratio options.
B-Spec BOP help for the automatic B-Specs #36161induction -50 lbsfasterinductionB-Spec automatics: Sonic restrictors to 35/36mm, Fit weights to 2350/2500 lbs, Fit CVT restrictor to 313mm, Mini weights to 2500 lbs, Mini restrictors to 35-46mm.
B-Spec Require hood pins #36233wordingwordingB-Spec and C-Spec hood pins now recommended but not required; factory release cable may be removed if pins used.
B-Spec Sonic Caliper Pistons #36238tyres & wheelsaddedtyres & wheelsB-Spec Chevrolet Sonic and C-Spec Cruze allowed Babyface Fabrication brake caliper pistons SNC-SS and CRZ-SS.
B-Spec Clean up (15-19) Honda Fit MT & CVT Notes Sections #36068wordingwordingB-Spec Honda Fit MT & CVT (15-19) notes cleaned up: removed obsolete parts, added rear sway bar Progress 62.1063 and CVT transmission cooler Setrab 50-119-7612.
B-Spec Set expiration date for Nissan Versa (09-11) #36069cars addedremovedcars addedB-Spec Nissan Versa 09-11 spec line expires 1 January 2025 unless appeal filed by 1 December 2024.
B-Spec Correct error for rear brakes of Hyundai/Kia #36174suspension & brakessuspension & brakesB-Spec Hyundai Accent rear brakes change to 10.3 disc; Kia Rio rear brakes change to 10.3 disc.
AS Request for Classification of 2018-2023 mustang In #35764cars addedaddedAS adds 2018-23 Ford Mustang GT 5.0L at 3600 lbs, 275 tire, 60mm restrictor, optional Brembo front brakes.
B-Spec Add B14 Kit Part # to Sonic Spec line In #35969suspension & brakesaddedsuspension & brakesChevrolet Sonic Spec lines add Bilstein B14 kit #47-171725 as verified compatible suspension option.
B-Spec Eliminate redundant sway bar end link part #s from notes In #35970wordingwordingB-Spec and C-Spec: redundant sway bar end link part numbers removed from Mazda2 and eleven Mini Cooper variants' notes.
B-Spec Update Fiat 500 Spec line In #35990cars addedaddedB-Spec Fiat 500 spec line year range changed from 12-15 to 12-17.
B-Spec Update (15-19) Honda Fit #36067weight +25 lbsslowerweightB-Spec Honda Fit CVT 15-19 minimum weight increases to 2550 lbs, intake restrictor to 31 mm.
AS 6th gen Camaro limited prep #35733cars addedaddedAS Chevrolet Camaro 1LE (2016-) added with 3600 lbs minimum weight, 275 tires, 60mm restrictor, 345/338mm brakes.
AS Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V8 LS1 Alum BLK #35825cars addedaddedAS 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 Full Prep Head #35891engineaddedengineAS Chevrolet Camaro, Firebird, and Ford Mustang now permit Flo Tek cylinder heads in multiple generations.
B-Spec Delete trim levels/update language for spec lines #35746wordingwordingB-Spec model descriptions standardized: trim levels removed, body styles clarified with consistent wording across Sonic, Fiesta, Fit, Accent, Rio, Versa, and Yaris.
B-Spec Wheel Rules #36066wordingwordingB-Spec and C-Spec wheel rules clarified: tyre tread may not protrude beyond fender opening; wheel spacers allowed equally on all four corners; total offset must match left to right per axle.
AS Restricted Prep Aftermarket Parts Request #35682otheraddedAS Camaro, Firebird 93-02 and GTO 04-06 add approved LS1 connecting rod part numbers to Notes.
AS Allowance of 11 #35824tyres & wheelsfastertyres & wheelsAS Cadillac CTS-V, Chevy Camaro SS V8, Dodge Challenger, Ford Mustang GT 5.0L, Pontiac GTO allowed 11" wheels until 3/1/25.
B-Spec Change restrictor from 30mm to 31mm (2015+ Honda Fit) and add 50# #34857inductionfasterinductionB-Spec Honda Fit MT 15-19 restrictor increases 30mm to 31mm, minimum weight rises 2525 to 2550 lbs.
B-Spec Wheel Offset and Spacer Revision #35466suspension & brakessuspension & brakesB-Spec and C-Spec gain wheel offset freedom and spacer flexibility; C-Spec wheels now differ per axle, not all four corners.
B-Spec Set Expiration Date for Unused Spec Lines #35742wordingwordingB-Spec Mini Cooper Countryman R60, Paceman R61, and Nissan Versa 07-11 1797cc expire 1/1/2025 without appeal by 12/1/2024.
AS Request to Classify 1970-1981 Camaro and Firebird in AS #33659cars addedaddedChevrolet 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 Fuel Cell 12 #34194otheraddedAS class adds fuel cell location notes to multiple Cadillac, Chevrolet, Dodge and Ford models: cells within 24 inches of standard tank.
AS Please Classify the 6th Gen Into AS. #35448cars addedaddedChevrolet Camaro 6th gen Full Prep added to AS class at 3400 lbs base or 3600 lbs with built engine.
AS spec lines #35713otherunclearAS 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…
B-Spec BOP Adjustment for Yaris iA, 2020+ Versa, and 07-08 Honda Fit #35382weight -125 lbs
B-Spec 07-08 Honda Fit Rear Sway Bar part # #35473otherotherB-Spec 07-08 Honda Fit Automatic allows rear sway bar Progress #62.1060; manual adds same part.
B-Spec Eliminate Redundant Trans Cooler Rule #35353removedremovedB-Spec and C-Spec auxiliary transmission cooler approval rule deleted.
B-Spec Fix Sonic Hatchback MT Spec Line #35371otheraddedB-Spec Chevrolet Sonic 5dr Hatch MT 12-19 allows aluminum radiator #ZZP-ZZ013.
B-Spec Split Spec Line of Automatic and Manual 2nd Gen (09-14) Fit #35251cars addedadded09-14 Honda Fit MT and AT now have separate spec lines with distinct gear ratios and final drive.
B-Spec Equalize Mazda 2 Headers and clean up spec line #35259weightslowerweightB-Spec Mazda2 10-14 minimum weight increases 70 lbs to 2350, headers and parts equalized effective 3-1-2024.
B-Spec Rear Sway Bar Request for Nissan Versa and Versa Note 2013- #35323suspension & brakesaddedsuspension & brakesB-Spec Nissan Versa and Versa Note 2013–2019 permitted Hardrace HR-Q0146 19mm rear sway bar.
B-Spec B-Spec Hankook Tire for Regionals #35055tyres & wheelstyres & wheelsB-Spec Hankook tires allowed at regionals only through June 30, 2024; Goodyear becomes sole legal tire July 1, 2024.
B-Spec Update 12-19 Nissan Versa Spec Line & Adjust BOP #35074weight -60 lbsfasterweightB-Spec Nissan Versa Note Hatchback minimum weight drops 60 lbs to 2490; sedan line expanded to 2012–2019; 2013+ model deleted.
B-Spec Clarifying the ECU and Data Acquisition language #35236wordingwordingB-Spec and C-Spec clarify ECU must be unaltered OE, no altering devices allowed in grid to post-impound, and data acquisition systems expanded with new sensor types permitted.
FF Honda Fit Oversize Piston Rings #35305engineaddedengineFF Honda Fit gains Fast Forward oversize piston ring option PN FF800-100 as alternative to Riken or Nippon.
B-Spec Mazda 3i 2010-2013 5-Speed Manual Gear Ratios #34820wordingwordingC-Spec Mazda 3i 2010-2013 5-speed manual third gear ratio changes from 3.84 to 1.84.
B-Spec Error Correction #34955wordingwordingC-Spec Dodge Dart 14-16 displacement corrected to 1998 cc, bore and stroke to 88.0 x 82.0 mm.
B-Spec B-Spec Tire #35034tyres & wheelsaddedtyres & wheelsB-Spec adds Goodyear Eagle RS dry and wet tires; Hankook restricted to regional events from 2024.
2:03.082Daniel Richardson · fastest of 11 · top 5 within 2.2s+0.920s (+0.75%)
2:04.120Gregory Eaton · fastest of 9 · top 5 within 3.0s-0.458s (-0.37%)
154.6James Jost+3.7 mph (+2.5%)
1:59.249Nolan Allaer · fastest of 8 · top 5 within 2.8s+0.034s (+0.03%)
2:00.583Jonathan Kotyk · fastest of 8 · top 5 within 0.4s-17.775s (-12.85%)
138.4Calvin Kautz+0.1 mph (+0.1%)
-3.537squal -3.833s
97.2%qual 96.9%
2:22.707Riley Salyer · fastest of 25 · top 5 within 1.0s-0.238s (-0.17%)
2:23.732Richard Hromin · fastest of 23 · top 5 within 0.4s-0.087s (-0.06%)
110.7Chris Daughtery-1.6 mph (-1.4%)
+19.612squal +19.625s
115.8%qual 115.9%
26 rule changes (AS: 4, FF: 1, B-Spec: 21)4 weight · 3 cars added · 3 suspension & brakes · 3 tyres & wheels · 1 engine · 1 induction · 6 wording · 5 other · C-Spec adds Chevrolet Cruze, Ford Focus, Honda Civic, Mazda 3i, Toyota Corolla, VW Jetta; updates Dodge Dart displacement to 2360 cc, Mazda3s model year, Toyota Corolla specs. · AS crate motor part number specification clarified; both CT400 P/N-19370604 and 19370604 engine assemblies permitted for GM vehicles. · AS Ford Mustang GT 5.0L (15-17) Restricted maximum wheel diameter increases to 19.0 inches. · AS Dodge Challenger 5.7L/6.1L/6.4L V8 allows alternate front upper control arms; SPC-66045 spec part removed. · AS Dodge Challenger 5.7L/6.1L/6.4L V8 now allows alternate front brake calipers with adaptor brackets for component compatibility. · B-Spec Hyundai Accent GS Hatchback restrictor plate increases from 39 mm to 41 mm. · B-Spec Hyundai Accent GS Hatchback model years changed from 13–19 to 12–19. · B-Spec adds Hankook 200/580R15 Z217 option alongside 205/50R15 C51; C-Spec specifies 225/45R17 DOT tires unmodified. · B-Spec and C-Spec Chevrolet Sonic 12-19 allowed ZZP Aluminum Radiator #ZZP-ZZ013; Hatch MT restrictor changed to 34mm. · B-Spec and C-Spec bumper caps may use machine screws and T-nuts or rivet-nuts; self-drilling, tapping, and sheet metal screws prohibited. · B-Spec and C-Spec allow CAN bus connections to data systems for reading only, removing prior OBD2 restriction. · B-Spec Ford Fiesta 5dr and 4dr lose 25 lbs minimum weight, to 2470. · B-Spec Ford Fiesta 5dr, Fiesta 4dr, Honda Fit, Mazda2 lose weight; Mini Cooper variants gain weight and larger restrictors. · C-Spec Mazda 3i Touring 2.0 Skyactive MT 12-13 added with 2000 cc, 2900 lbs, 155 hp, 4.105 final drive. · B-Spec minimum ride height set to 6 inches, C-Spec to 5½ inches. · B-Spec spring rate stays 500 lb front and rear; C-Spec rises to 600 lb front, 800 lb rear. Spring strapping allowed for rebound only. · B-Spec wheels gain 13 lb minimum weight; C-Spec wheels gain 17 lb minimum weight. · B-Spec and C-Spec allowed metal threaded inserts in plastic intake manifolds for throttle body fasteners. · B-Spec and C-Spec rules clarified: wording changes to category terminology, manual priority scope, and technical requirements; no performance specifications altered. · B-Spec Mini Cooper R56 MT/AT and Clubman R55 fuel pressure regulator increased from 401mm to 40mm FPR with OBX header allowed. · B-Spec allows helper springs up to 500 lbs rate; tender springs now prohibited. · FF Honda Fit engine adds Fast Forward part number alternatives for intake, exhaust, oil system, and scavenge pump components. · B-Spec Honda Fit 09-14 Automatic now permits any aftermarket exhaust or header; Manual unchanged. · B-Spec Chevrolet Sonic, Honda Fit, and Mini Cooper split into separate manual and automatic spec lines with distinct gear ratios and final drive ratios. · B-Spec tire options changed to Hankook 205/50R15 C51 or 200/580R15 Z217; no mixing wet and dry tires. · B-Spec Honda Fit 15-19 minimum weight cut to 2575 lbs from 2800 lbs.showhide
B-Spec Initial car classifications and spec lines #34461cars addedaddedC-Spec adds Chevrolet Cruze, Ford Focus, Honda Civic, Mazda 3i, Toyota Corolla, VW Jetta; updates Dodge Dart displacement to 2360 cc, Mazda3s model year, Toyota Corolla specs.
AS Crate Motor Part Numbers #32944wordingwordingAS crate motor part number specification clarified; both CT400 P/N-19370604 and 19370604 engine assemblies permitted for GM vehicles.
AS Request wheel size change #33007tyres & wheelsfastertyres & wheelsAS Ford Mustang GT 5.0L (15-17) Restricted maximum wheel diameter increases to 19.0 inches.
AS Alternative Upper Front Control Arms for Dodge Challenger #33352wordingwordingAS Dodge Challenger 5.7L/6.1L/6.4L V8 allows alternate front upper control arms; SPC-66045 spec part removed.
AS Front Brake Caliper Adapters for Dodge Challenger #33353otherotherAS Dodge Challenger 5.7L/6.1L/6.4L V8 now allows alternate front brake calipers with adaptor brackets for component compatibility.
B-Spec Hyundai Accent Restrictor Plate #34331inductionfasterinductionB-Spec Hyundai Accent GS Hatchback restrictor plate increases from 39 mm to 41 mm.
B-Spec Hyundai Accent 2012 Model #34332cars addedaddedB-Spec Hyundai Accent GS Hatchback model years changed from 13–19 to 12–19.
B-Spec Allow ZZP Sonic Aluminum Radiator 1.68 #33660wordingwordingB-Spec and C-Spec Chevrolet Sonic 12-19 allowed ZZP Aluminum Radiator #ZZP-ZZ013; Hatch MT restrictor changed to 34mm.
B-Spec Fasteners for Bumper Caps #33797otheraddedB-Spec and C-Spec bumper caps may use machine screws and T-nuts or rivet-nuts; self-drilling, tapping, and sheet metal screws prohibited.
B-Spec Allow CAN Bus Connection to Data Systems #33806otheraddedB-Spec and C-Spec allow CAN bus connections to data systems for reading only, removing prior OBD2 restriction.
B-Spec Request Ford Fiesta weight reduction 25lbs #33890weight -25 lbsfasterweightB-Spec Ford Fiesta 5dr and 4dr lose 25 lbs minimum weight, to 2470.
B-Spec BoB Adjustments #34208weight -25 lbsunclearB-Spec Ford Fiesta 5dr, Fiesta 4dr, Honda Fit, Mazda2 lose weight; Mini Cooper variants gain weight and larger restrictors.
B-Spec T5 Mazda 3 Spec Line Addition #33536cars addedaddedC-Spec Mazda 3i Touring 2.0 Skyactive MT 12-13 added with 2000 cc, 2900 lbs, 155 hp, 4.105 final drive.
B-Spec T5 Ride Height Rules. #33552suspension & brakesaddedsuspension & brakesB-Spec minimum ride height set to 6 inches, C-Spec to 5½ inches.
B-Spec T5 Spring Allowance #33557suspension & brakesfastersuspension & brakesB-Spec spring rate stays 500 lb front and rear; C-Spec rises to 600 lb front, 800 lb rear. Spring strapping allowed for rebound only.
B-Spec T5 Wheel Minimum Weight #33558weightslowerweightB-Spec wheels gain 13 lb minimum weight; C-Spec wheels gain 17 lb minimum weight.
B-Spec Threaded Metal Inserts for Plastic Intake Manifolds #34164otheraddedB-Spec and C-Spec allowed metal threaded inserts in plastic intake manifolds for throttle body fasteners.
B-Spec T5 Rules Feedback #33595wordingwordingB-Spec and C-Spec rules clarified: wording changes to category terminology, manual priority scope, and technical requirements; no performance specifications altered.
B-Spec Early Model Mini #33363wordingunclearB-Spec Mini Cooper R56 MT/AT and Clubman R55 fuel pressure regulator increased from 401mm to 40mm FPR with OBX header allowed.
B-Spec Helper Versus Tender springs. #33866suspension & brakessuspension & brakesB-Spec allows helper springs up to 500 lbs rate; tender springs now prohibited.
FF Add Fast Forward Part Numbers for Honda Fit Engine #33752engineaddedengineFF Honda Fit engine adds Fast Forward part number alternatives for intake, exhaust, oil system, and scavenge pump components.
B-Spec Split up Spec lines for Automatic/Manual 2nd Gen Fit #33292otheraddedB-Spec Honda Fit 09-14 Automatic now permits any aftermarket exhaust or header; Manual unchanged.
B-Spec Request to Split Spec Lines for Automatic Models #33270wordingwordingB-Spec Chevrolet Sonic, Honda Fit, and Mini Cooper split into separate manual and automatic spec lines with distinct gear ratios and final drive ratios.
B-Spec Tire Rule Request #33350tyres & wheelstyres & wheelsB-Spec tire options changed to Hankook 205/50R15 C51 or 200/580R15 Z217; no mixing wet and dry tires.
B-Spec Utilize the Data - Make BoP Changes #32179weight -225 lbsfasterweightB-Spec Honda Fit 15-19 minimum weight cut to 2575 lbs from 2800 lbs.
2:02.162Kurt Rezzetano · fastest of 13 · top 5 within 2.3s-0.776s (-0.63%)
2:04.578Gregory Eaton · fastest of 11 · top 5 within 2.9s+0.678s (+0.55%)
150.9James Jost-3.0 mph (-2.0%)
1:57.689James Weida · fastest of 11 · top 5 within 3.9s+0.328s (+0.28%)
2:21.862Sven de Vries · fastest of 10 · top 5 within 14.3s+24.290s (+20.66%)
142.9Calvin Stewart+0.1 mph (+0.1%)
+17.284squal -4.473s
113.9%qual 96.3%
1:59.215Jonathan Kotyk · fastest of 13 · top 5 within 1.2s-0.348s (-0.29%)
2:18.358Jonathan Kotyk · fastest of 12 · top 5 within 2.4s-2.116s (-1.51%)
138.3Tim Kautz+2.2 mph (+1.6%)
+13.780squal -2.947s
111.1%qual 97.6%
2:22.945Steve Introne · fastest of 30 · top 5 within 1.3s+0.577s (+0.41%)
2:23.819Riley Salyer · fastest of 30 · top 5 within 0.8s+1.725s (+1.21%)
112.3Matt Giuffre+0.1 mph (+0.1%)
+19.241squal +20.783s
115.4%qual 117.0%
25 rule changes (AS: 9, F5: 6, B-Spec: 10)5 cars added · 4 suspension & brakes · 2 engine · 2 weight · 1 induction · 1 tyres & wheels · 6 wording · 4 other · AS adds Hoosier W2 wet tyre option alongside R7, R6, WET/H20. · AS Dodge Challenger 08-20 gains two transmission ratio options: 2.97–0.50 or 2.26–0.63. · F500 Rotax 493 and 593 intake boots: removed Moto Tassinari V3124-873B-2 from 493/593 non-HO allowance, added Moto Tassinari V3120-794A-2 option for non-HO. · B-Spec Mazda2 10-14 gains approved rear sway bar options 0000-04-2203-RR or 0000-04-2312. · F500 Rotax engines now permit Ingi Tech Sparker ignition DCP-CDI-P2 as alternate ECU. · AS Cadillac CTS-V 6.0L V8 Restricted Prep removes 295 tire size 50 lb penalty. · F500 clarifies stepped diameter exhaust headers prohibited except at cylinder head flange area. · F500 Rotax 593 intake boot options clarified; oil injection pump removal now permitted. · B-Spec Hyundai Accent GS and Kia Rio 5-door restrictor increased from 36mm to 39mm flat plate. · B-Spec allows spring straps or zip ties to body for rebound control; OEM or kit bump stop requirement removed. · B-Spec strut tower modifications permitted for camber adjustment only, inboard movement, with shims or eccentric bolts on other suspension. · B-Spec Mazda2 10-14 allowed undertray part numbers corrected to DO8C-56-110A, DO8C-56-311, DO7A-56-321. · F500 Majors and Runoffs cars must install AIM part #X47KPFSOLO2R0 data box mount for Solo or Solo 2. · B-Spec classifies Nissan Versa S 2020- at 1598cc, 2618mm wheelbase, 2700 lbs minimum weight. · B-Spec: Toyota/Scion IA Sedan 2016–2020 added at 1496cc, 2700 lbs, 38mm FPR. · B-Spec Mazda 2 (10-14) removes Bilstein B14 kit, adds Powerflex bushings, radiator, three cat-delete headers, and undertray. · SMG Long Tube Headers: Borla PN 17237 discontinued, approved alternatives American Racing MT3-05134300LSNC or Kooks PN 11312000. · AS Mercury Capri 79-86 removed as separate spec line, merged into Ford Mustang 79-93 spec line. · AS Spec Mustang SMG Restricted Prep removes 3.73 gear ratio and 355/300 brake disc sizes. · AS Camaro, Firebird, Mustang full prep engines: alternate GM and Ford Performance cylinder heads permitted regionally with Allstar restrictor ALL26180. · Honda Fit 2007-2008 automatic added to B-Spec at 2525 lbs with 1499 cc engine. · F5 cars must install AIM part #X47KPFSOLO2R0 data box mount for Majors and Runoffs. · AS Chevrolet/Pontiac Camaro & Firebird 93-02 gains BMR AA004 or UMI 2310 adjustable front upper control arms. · AS Pontiac GTO 04-06 Restricted Prep minimum weight rises: LS1 to 3300 lbs, LS2 to 3350 lbs on 295 tires. · B-Spec upper strut slotted plates no longer required to use manufacturer's original bolt holes.showhide
AS Request to add Hoosier W2 #33031tyres & wheelsaddedtyres & wheelsAS adds Hoosier W2 wet tyre option alongside R7, R6, WET/H20.
AS correction of Dodge Challenger specification line #33151cars addedaddedAS Dodge Challenger 08-20 gains two transmission ratio options: 2.97–0.50 or 2.26–0.63.
F5 Intake Boots Correction #33028wordingwordingF500 Rotax 493 and 593 intake boots: removed Moto Tassinari V3124-873B-2 from 493/593 non-HO allowance, added Moto Tassinari V3120-794A-2 option for non-HO.
B-Spec Request new Mazda Rear Swaybar #32769suspension & brakesaddedsuspension & brakesB-Spec Mazda2 10-14 gains approved rear sway bar options 0000-04-2203-RR or 0000-04-2312.
F5 Ensure availability of ECU for Rotax engines #32695engineaddedengineF500 Rotax engines now permit Ingi Tech Sparker ignition DCP-CDI-P2 as alternate ECU.
B-Spec Request to Remove Part Numbers from Kia/Hyundai Spec Lines #32378inductionfasterinductionB-Spec Hyundai Accent GS and Kia Rio 5-door restrictor increased from 36mm to 39mm flat plate.
B-Spec Request spring attachment #31351suspension & brakessuspension & brakesB-Spec allows spring straps or zip ties to body for rebound control; OEM or kit bump stop requirement removed.
B-Spec Limit Rear Camber to 1.75 Degrees Section 9.1.10.E.35 #31393suspension & brakessuspension & brakesB-Spec strut tower modifications permitted for camber adjustment only, inboard movement, with shims or eccentric bolts on other suspension.
B-Spec Letter 31442 Part# Correction #32060wordingwordingB-Spec Mazda2 10-14 allowed undertray part numbers corrected to DO8C-56-110A, DO8C-56-311, DO7A-56-321.
F5 E&O class name #32194otheraddedF500 Majors and Runoffs cars must install AIM part #X47KPFSOLO2R0 data box mount for Solo or Solo 2.
B-Spec Request to Classify 2020-21 Versa S #30759cars addedaddedB-Spec classifies Nissan Versa S 2020- at 1598cc, 2618mm wheelbase, 2700 lbs minimum weight.
B-Spec Request to Classify the Toyota IA sedan & Scion IA Sedan for 2022 #31045cars addedaddedB-Spec: Toyota/Scion IA Sedan 2016–2020 added at 1496cc, 2700 lbs, 38mm FPR.
AS Proposed Revisions to SCCA GCR 2021 Appendix M, Part 3 #30295wordingwordingSMG Long Tube Headers: Borla PN 17237 discontinued, approved alternatives American Racing MT3-05134300LSNC or Kooks PN 11312000.
AS specification line consolidation and correction #31846cars addedremovedcars addedAS Mercury Capri 79-86 removed as separate spec line, merged into Ford Mustang 79-93 spec line.
AS correction of SMG specification line #31847wordingremovedAS Spec Mustang SMG Restricted Prep removes 3.73 gear ratio and 355/300 brake disc sizes.
AS Alternate cylinder heads for full prep engine builds - Evaluation #31851engineaddedengineAS Camaro, Firebird, Mustang full prep engines: alternate GM and Ford Performance cylinder heads permitted regionally with Allstar restrictor ALL26180.
B-Spec Request to add 2007-2008 Honda Fit #30853cars addedaddedHonda Fit 2007-2008 automatic added to B-Spec at 2525 lbs with 1499 cc engine.
F5 Data Box Mounting Plate #31638otheraddedF5 cars must install AIM part #X47KPFSOLO2R0 data box mount for Majors and Runoffs.
AS Request for adjustable Front Upper Control Arms on 4th Gen F-Body #30457otheraddedAS Chevrolet/Pontiac Camaro & Firebird 93-02 gains BMR AA004 or UMI 2310 adjustable front upper control arms.
AS Request Pontiac GTO tire size change #30881weightslowerweightAS Pontiac GTO 04-06 Restricted Prep minimum weight rises: LS1 to 3300 lbs, LS2 to 3350 lbs on 295 tires.
B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakessuspension & brakesB-Spec upper strut slotted plates no longer required to use manufacturer's original bolt holes.
1:50.427Drew Cattell · fastest of 31 · top 5 within 1.9s+5.207s (+4.95%)
1:50.606Gregory Eaton · fastest of 28 · top 5 within 1.7s-0.901s (-0.81%)
153.8James Jost
1:42.619Ryan Mayfield · fastest of 22 · top 5 within 1.6s-0.517s (-0.50%)
1:43.140Sven de Vries · fastest of 20 · top 5 within 1.7s+0.280s (+0.27%)
144.4James Weida
-7.466squal -7.808s
93.2%qual 92.9%
1:44.359Jonathan Kotyk · fastest of 24 · top 5 within 1.1s-0.242s (-0.23%)
1:55.676Jonathan Kotyk · fastest of 23 · top 5 within 1.8s+11.152s (+10.67%)
141.6Nicholas Sheppard
+5.070squal -6.068s
104.6%qual 94.5%
2:03.121John Phillips · fastest of 60 · top 5 within 1.2s-0.045s (-0.04%)
2:03.971Steve Introne · fastest of 60 · top 5 within 0.4s-0.079s (-0.06%)
111.2David Oliveira
+13.365squal +12.694s
112.1%qual 111.5%
42 rule changes (AS: 14, F5: 3, FF: 3, B-Spec: 22)10 cars added · 4 engine · 4 weight · 3 suspension & brakes · 2 tyres & wheels · 1 aero · 12 wording · 6 other · B-Spec upper strut slotted plates must use existing chassis structure, no longer limited to manufacturer's original bolt holes. · F5 clarifies mechanical shifting only; throttle-cut and flat-shifter devices permitted if driver retains full control. · F5 single-seat open-wheel cars: rigid suspension becomes limited suspension in class definition. · B-Spec Mazda2 10–14 gains optional header PN 0000-06-2410 with 70 lb. weight penalty. · AS Cadillac CTS-V 6.0L LS6 removes 295-tire 50 lb penalty. · AS consolidates seven SN95 Mustang '94-'04 spec lines into three unified lines by model year and engine. · AS Camaro/Firebird LT1 and LS1 transmission changed to TUET1 6362; Mustang GT 4.6L/5spd to TUKT16901, loses 300 lbs. · AS Camaro & Firebird and Mustang GT gear ratio specifications restored with alternate sets permitted. · AS Camaro, Firebird, Mustang, and Capri all gain 50 lbs minimum weight across seven model year variants. · B-Spec Honda Fit (09-14, 15-19) and Mini Cooper (R50, R56, 2011-13) add automatic transmission ratio and final drive options permitting Setrab 50-119-7612 cooler. · B-Spec Honda Fit 2007-08 added with 1499 cc displacement, 2450 mm wheelbase, 2525 lbs minimum weight. · B-Spec Ford Fiesta rear sway bar: Eibach #35143.312 or #35143.320 now allowed. · B-Spec restrictor changes from 0.060" to 0.050"-0.079" range. · B-Spec: rear window wipers and wiper motor removal now allowed. · F500 Rotax 593 HO engine now permitted; 875 lbs minimum weight, MA0242SP1020A or MA0242SP1063A restrictor, specific intake boots and piston required. · B-Spec R60 and R61 MINI allow 4-lug hub conversion with specified front and rear bearings and brake rotors. · B-Spec Mazda2 10-14 minimum weight rises to 2380 lbs; new header PN 0000-06-2401 required after 1/1/2023. · B-Spec Honda Fit eligible years extended from 2009–2012 to 2009–2014. · B-Spec Hyundai Accent GS and Kia Rio 5-door restrictor reduced from 40mm to 36mm flat plate. · B-Spec must use Hankook P205/50ZR15 Z214 C51 or Z217 rain tyre for SCCA Majors, Super Tour and Runoffs. · FF block relief permitted only as needed to fit an allowed crankshaft. · AS Mustang 4.6L 5spd gains cold air intake freedom; 5.0L 6spd now requires 56mm flat plate restrictor. · AS CTS-V 5.7L LS6 and 6.0L LS2 may use Driveshaft Shop P/N GMCTSV2-C carbon fiber driveshaft. · AS Chevrolet Camaro SS V8 6.2L Restricted Prep model years extended from 10–13 to 10–15. · B-Spec tire rules clarified: Hankook Z214 dry and Z217 rain required at Majors/Super Tour/Runoffs after 6-1-2021; regionals allow any DOT race tire through 2021; wet tire permits 0.2" lower ride height. · B-Spec restrictor thickness set to 0.060 inches plus or minus 0.005 inches. · B-Spec Hyundai Accent GS Hatchback 2013-2019 classified at 2525 lbs with 40mm flat plate restrictor and specific suspension and sump parts allowed. · B-Spec Mini Cooper Countryman R60 and Paceman R61 production years corrected from 2011–13 to 2011–16. · B-Spec Toyota Yaris Hatch model year corrected from 07-12 to 07-11, and 12-18 Yaris renamed to Yaris Hatch. · B-Spec Mini Cooper all models: ride height minimum 5 inches measured from metal under door rocker molding. · B-Spec brake dust shields may now be removed or modified by removing material. · B-Spec Mini Cooper Clubman R55 11-15 now allows OBX header 10-2101-2S with 40mm flat plate restrictor. · AS Ford Mustang GT 5.0L 15-17 Restricted added to Spec Line with 3600 lbs minimum weight, 55mm restrictor, 18×10 wheels, 295 tires. · AS underhood bracing on stock hoods, trunks, and rear decks may be modified or removed. · AS Cadillac CTS-V 04-07 with 295 tire drops to 3450 lbs; Camaro SS V8 10-13 and Challenger 08-20 specs removed. · AS Camaro & Firebird (93-02) and Mustang GT (05-14) specifications restored with weight minimums 3250–3500 and 3350–3600 lbs respectively. · AS Dodge Challenger gains 6.1L and 6.4L V8 options; 5.7L weight rises to 3500 lbs on 295 tyres, 3600 on 315 tyres; compression to 10.9:1 max. · AS Camaro & Firebird (93-02) and Ford Mustang Coupe GT (05-14) spec lines consolidated; Camaro/Firebird now allows both LT1 and LS1 engines; Mustang now allows both 4.6L 3-valve and 5.0L 4-valve engines with restrictor. · B-Spec clarifies B14 Bilstein shock approval process; removes specific B14 kit allowances from eight car spec lines, requiring CRB approval instead. · B-Spec removes Chevrolet Sonic (12-19); renames Toyota Yaris (07-12) to Hatch; limits Yaris Sedan to 07-12. · FF class cylinder head now permits optional coolant bleed line pipe thread fitting to swirl tower. · FF Honda LC1 ECU supplied by HPD is permitted effective 12/1/2020 with HPD lambda sensor.showhide
B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakesaddedsuspension & brakesB-Spec upper strut slotted plates must use existing chassis structure, no longer limited to manufacturer's original bolt holes.
F5 Clarify allowable assisted shifting systems #30871wordingwordingF5 clarifies mechanical shifting only; throttle-cut and flat-shifter devices permitted if driver retains full control.
F5 Request to correct terminology #30976wordingwordingF5 single-seat open-wheel cars: rigid suspension becomes limited suspension in class definition.
AS Request CTS-V Spec Line Error Correction #30242weightfasterweightAS Cadillac CTS-V 6.0L LS6 removes 295-tire 50 lb penalty.
AS Request to consolidate SN95 Mustang '94-'04 Mustang spec lines #30428wordingwordingAS consolidates seven SN95 Mustang '94-'04 spec lines into three unified lines by model year and engine.
AS American Sedan Transmission Rule Change Request #30595enginefasterengineAS Camaro/Firebird LT1 and LS1 transmission changed to TUET1 6362; Mustang GT 4.6L/5spd to TUKT16901, loses 300 lbs.
AS Correction to specifications inadvertently deleted #30691wordingwordingAS Camaro & Firebird and Mustang GT gear ratio specifications restored with alternate sets permitted.
AS weight adjustments #30700weight +50 lbsslowerweightAS Camaro, Firebird, Mustang, and Capri all gain 50 lbs minimum weight across seven model year variants.
B-Spec Transmission Cooler Requests #30079otheraddedB-Spec Honda Fit (09-14, 15-19) and Mini Cooper (R50, R56, 2011-13) add automatic transmission ratio and final drive options permitting Setrab 50-119-7612 cooler.
B-Spec Request to classify the 07 Honda Fit #30083cars addedaddedB-Spec Honda Fit 2007-08 added with 1499 cc displacement, 2450 mm wheelbase, 2525 lbs minimum weight.
B-Spec Request Ford Fiesta Eibach Rear Sway Bar Part Number 35143.320 #30340suspension & brakesaddedsuspension & brakesB-Spec Ford Fiesta rear sway bar: Eibach #35143.312 or #35143.320 now allowed.
B-Spec Restrictor rule #30474enginefasterengineB-Spec restrictor changes from 0.060" to 0.050"-0.079" range.
B-Spec Rear wipers on all cars #30585aerofasteraeroB-Spec: rear window wipers and wiper motor removal now allowed.
F5 Request to Allow Rotax 593 HO Engine #30712cars addedaddedF500 Rotax 593 HO engine now permitted; 875 lbs minimum weight, MA0242SP1020A or MA0242SP1063A restrictor, specific intake boots and piston required.
B-Spec Allow 4 lug hub conversion to R60 and R61 MINI #29863otheraddedB-Spec R60 and R61 MINI allow 4-lug hub conversion with specified front and rear bearings and brake rotors.
B-Spec Mazda2 header replacement #29944weight +50 lbsslowerweightB-Spec Mazda2 10-14 minimum weight rises to 2380 lbs; new header PN 0000-06-2401 required after 1/1/2023.
B-Spec Honda Fit Years on Spec Line #30078cars addedaddedB-Spec Honda Fit eligible years extended from 2009–2012 to 2009–2014.
B-Spec Hyundai/Kia restrictor size incorrect #30380engineslowerengineB-Spec Hyundai Accent GS and Kia Rio 5-door restrictor reduced from 40mm to 36mm flat plate.
B-Spec Clarify tire compound in rules #30387tyres & wheelstyres & wheelsB-Spec must use Hankook P205/50ZR15 Z214 C51 or Z217 rain tyre for SCCA Majors, Super Tour and Runoffs.
FF Kent crankshaft clarification #30426wordingwordingFF block relief permitted only as needed to fit an allowed crankshaft.
AS AS Mustang LP 4.6 3V Classification Transmission Request #29886enginefasterengineAS Mustang 4.6L 5spd gains cold air intake freedom; 5.0L 6spd now requires 56mm flat plate restrictor.
AS Request CF driveshaft on CTS-V for durability improvement #30117otheraddedAS CTS-V 5.7L LS6 and 6.0L LS2 may use Driveshaft Shop P/N GMCTSV2-C carbon fiber driveshaft.
AS Adjustment to model years of 5th generation RP Camaro #30348cars addedaddedAS Chevrolet Camaro SS V8 6.2L Restricted Prep model years extended from 10–13 to 10–15.
B-Spec Spec Tire Recommendation #29480tyres & wheelstyres & wheelsB-Spec tire rules clarified: Hankook Z214 dry and Z217 rain required at Majors/Super Tour/Runoffs after 6-1-2021; regionals allow any DOT race tire through 2021; wet tire permits 0.2" lower ride height.
B-Spec Make restrictor thickness unique for B Spec #30349wordingwordingB-Spec restrictor thickness set to 0.060 inches plus or minus 0.005 inches.
B-Spec Request to Classify Hyundai Accent (RB) 2012-2019 #29484cars addedaddedB-Spec Hyundai Accent GS Hatchback 2013-2019 classified at 2525 lbs with 40mm flat plate restrictor and specific suspension and sump parts allowed.
B-Spec Countryman production years incorrect #29864wordingwordingB-Spec Mini Cooper Countryman R60 and Paceman R61 production years corrected from 2011–13 to 2011–16.
B-Spec Toyota Yaris Model Year Corrections #29896wordingwordingB-Spec Toyota Yaris Hatch model year corrected from 07-12 to 07-11, and 12-18 Yaris renamed to Yaris Hatch.
B-Spec Correction spec lines for ride height Mini Cooper all models #29952wordingwordingB-Spec Mini Cooper all models: ride height minimum 5 inches measured from metal under door rocker molding.
B-Spec Request to Allow Removal of Stock Brake Dust Shields #29981suspension & brakessuspension & brakesB-Spec brake dust shields may now be removed or modified by removing material.
B-Spec Request to allow OBX header and restrictor to R55 Clubman 08-10 #30024otheraddedB-Spec Mini Cooper Clubman R55 11-15 now allows OBX header 10-2101-2S with 40mm flat plate restrictor.
AS Request for 2015 -2017 Ford Mustang Spec Line #29514cars addedaddedAS Ford Mustang GT 5.0L 15-17 Restricted added to Spec Line with 3600 lbs minimum weight, 55mm restrictor, 18×10 wheels, 295 tires.
AS Request Trunk lid / Rear Hatch clarification #29591wordingwordingAS underhood bracing on stock hoods, trunks, and rear decks may be modified or removed.
AS Common Weight for CTS-V Tire #29759weightfasterweightAS Cadillac CTS-V 04-07 with 295 tire drops to 3450 lbs; Camaro SS V8 10-13 and Challenger 08-20 specs removed.
AS Correction to specifications inadvertently deleted #30041cars addedaddedAS Camaro & Firebird (93-02) and Mustang GT (05-14) specifications restored with weight minimums 3250–3500 and 3350–3600 lbs respectively.
AS Request Additional Engine Options for Dodge Challenger Spec Line #29543cars addedaddedAS Dodge Challenger gains 6.1L and 6.4L V8 options; 5.7L weight rises to 3500 lbs on 295 tyres, 3600 on 315 tyres; compression to 10.9:1 max.
AS Rule simplification spec line communization #29824cars addedcars addedAS Camaro & Firebird (93-02) and Ford Mustang Coupe GT (05-14) spec lines consolidated; Camaro/Firebird now allows both LT1 and LS1 engines; Mustang now allows both 4.6L 3-valve and 5.0L 4-valve engines with restrictor.
B-Spec Request clarification of B14 shock package for any and all cars #29483wordingwordingB-Spec clarifies B14 Bilstein shock approval process; removes specific B14 kit allowances from eight car spec lines, requiring CRB approval instead.
B-Spec Cleanup of spec lines #29495cars addedremovedcars addedB-Spec removes Chevrolet Sonic (12-19); renames Toyota Yaris (07-12) to Hatch; limits Yaris Sedan to 07-12.
FF Allow Optional Coolant Bleed Line to Correct a Known Problem #29673otheraddedFF class cylinder head now permits optional coolant bleed line pipe thread fitting to swirl tower.
FF Clarification regarding Honda LC1 ECU implementation date #29684wordingwordingFF Honda LC1 ECU supplied by HPD is permitted effective 12/1/2020 with HPD lambda sensor.
2:27.045Gregory Eaton · fastest of 18 · top 5 within 0.6s
2:27.668Gregory Eaton · fastest of 15 · top 5 within 1.5s
149.2Gregory Eaton
2:20.954Calvin Stewart · fastest of 16 · top 5 within 1.8s
2:21.391James Weida · fastest of 14 · top 5 within 1.5s
143.2Aaron Ellis
-6.277squal -6.091s
95.7%qual 95.9%
2:22.916Simon Sikes · fastest of 14 · top 5 within 1.6s
2:24.268Jeffrey Bartz · fastest of 14 · top 5 within 0.4s
138.1Jeffrey Bartz
-3.400squal -4.129s
97.7%qual 97.2%
2:52.033David Daughtery · fastest of 25 · top 5 within 1.9s
2:52.847Riley Salyer · fastest of 25 · top 5 within 0.8s
111.5Robert Iversen
+25.179squal +24.988s
117.1%qual 117.0%
43 rule changes (AS: 16, F5: 6, FF: 4, B-Spec: 17)10 cars added · 8 engine · 3 suspension & brakes · 2 induction · 2 weight · 1 aero · 1 tyres & wheels · 14 wording · 2 other · F500 Suzuki GSXR600 engine years extended from 2003-2013 to 2003-2019. · B-Spec Mini Cooper R56 40mm restrictor requirement removed; suspension parts and OBX header with restrictor now allowed. · AS Dodge Challenger 5.7L V8 now requires iron block instead of aluminum, compression to 10.5:1 max, intake valve 12.7 mm, exhaust 12.3 mm, intake timing 188 degrees, exhaust timing 205 degrees. · AS Dodge Challenger 08-14 rear spoiler: 1GL20RXF replaced with 1GL20TZZAB; 82211606 still permitted. · FF Honda LC1 ECU implementation date clarified to pending, contingent on SCCA receiving sufficient support materials. · AS class pursuing specified list of eligible tires; list details unclear from text provided. · AS class tire eligibility list under development; no specifications changed yet. · AS Coyote Mustang restrictor plate under review for 2021; no change effective yet. · AS Restricted Prep 4.6 3V now permits conversion to 2 valve configuration. · AS Ford Mustang Coupe GT 4.6L 3V Restricted Prep now permits Ford Performance camshaft kit P/N M-6550-3V. · 2010-2014 Camaro remains classified in AS; no specification changes. · AS class cylinder head supplier discontinuation; replacement option pending for 2021 season. · AS Mustang, Capri, Camaro, and Firebird maximum brake rotor diameter increased from 12.2 to 13.1 inches. · unclear · F5 request to adjust external jetting device cockpit control denied; no rule change made. · F5 driver adjustable carburettor mixture: refer to separate Fastrack letter #28359 for ruling. · F5 cockpit adjustment request response published in Fastrack letter 28359. · B-Spec wheelbase specifications converted from inches to millimetres for all cars across the class. · B-Spec Chevrolet Sonic adds 5dr Hatch with 34mm restrictor; both body styles allow Setrab FP119M221 transmission cooler for automatic cars. · B-Spec: multiple models allow specific suspension kits and damper assemblies, effective 2020-05-01. · B-Spec sunroof retention wording clarified; cars must retain sunroofs securely bolted unless rails adequately secure the panel. · B-Spec Ford Fiesta 5dr gets 36mm restrictor, 4dr gets 34mm; Honda Fit 09-12 loses 25 lbs to 2525; Fit 15-20 restrictor tightens to 30mm; Mini Cooper 07-10 gets 40mm restrictor. · FF Kent Engine alternator becomes optional instead of not required. · B-Spec Chevrolet Sonic, Fiat 500, Ford Fiesta 5dr and 4dr, Honda Fit model years expanded to include 2019 or through 2019. · B-Spec adds six Mini Cooper models (02-06 R50, 07-10 R55, 12-15 R58, 11-15 R55, 11-13 R60, R61), weights 2545–2625 lbs, four with 40 mm restrictor. · B-Spec fog lamps may now be removed; holes must be completely covered. · B-Spec adds Chevrolet Sonic 4dr Sedan 12–19, 1796 cc, 2650 lbs, with 32mm restrictor. · FF permits HPD LC1 ECU with lambda sensor; E1 ECU no longer supported but existing units may continue. · FF rain tyres now allow Hoosier W3 Radial 185/60R13 front and 205/60R13 rear. · AS rear trailing arms may be replaced with tubular arms maintaining stock length and axle location purpose only. · AS Ford and GM full prep cars get increased weight reduction from 150 to 200 lbs. · 05-10 Ford Mustang Coupe GT 4.6L OHC classified AS with 3200 lbs minimum weight, HR cam permitted. · 10-15 Camaro Full Prep classified AS with 3400 lbs base weight, 3700 lbs over 313 CID, specific head castings and Edelbrock heads permitted. · B-Spec automatic and CVT transmissions now legal for all permitted cars meeting their spec line; OEM paddle shifters acceptable. · B-Spec automatic transmissions may use auxiliary coolers on case-by-case approval with submitted part numbers. · B-Spec adds Toyota Yaris Sedan 2007-, 1491 cc, 2400 lbs, with specified Bilstein, swaybar, and K&N intake. · B-Spec adds 2011-2016 Ford Fiesta 4dr Sedan, 1596 cc, 2495 lbs minimum weight. · B-Spec Kia Rio 5-door LX model years extended to 2012–2019. · B-Spec Mazda2 10-14: suspension parts, intake, exhaust header, and bushings added to allowed list. · F500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 restrictor reduced to 28mm from 29mm. · B-Spec Mini Cooper production years clarified to 2011-13.showhide
F5 Request to Update Suzuki Engine Years for F500 #29453engineaddedengineF500 Suzuki GSXR600 engine years extended from 2003-2013 to 2003-2019.
B-Spec Allowance Versus Requirement for R56 Mini Cooper #29127enginefasterengineB-Spec Mini Cooper R56 40mm restrictor requirement removed; suspension parts and OBX header with restrictor now allowed.
AS Dodge Challenger AS Spec Line Clarification #28698engineslowerengineAS Dodge Challenger 5.7L V8 now requires iron block instead of aluminum, compression to 10.5:1 max, intake valve 12.7 mm, exhaust 12.3 mm, intake timing 188 degrees, exhaust timing 205 degrees.
AS Dodge Challenger AS Spec Line Clarification #2 #28699aeroaeroAS Dodge Challenger 08-14 rear spoiler: 1GL20RXF replaced with 1GL20TZZAB; 82211606 still permitted.
FF Clarification regarding Honda LC1 ECU implementation #29135wordingwordingFF Honda LC1 ECU implementation date clarified to pending, contingent on SCCA receiving sufficient support materials.
AS Support for R-Type Specification Tires #27450wordingunclearAS class pursuing specified list of eligible tires; list details unclear from text provided.
AS Spec Tire Request #27519wordingunclearAS class tire eligibility list under development; no specifications changed yet.
AS Restrictor Plate Change for RP 2011+ Mustang with Coyote Engine #27675wordingunclearAS Coyote Mustang restrictor plate under review for 2021; no change effective yet.
AS 2005-2009 Restricted Prep 4.6 3V #27908engineaddedengineAS Restricted Prep 4.6 3V now permits conversion to 2 valve configuration.
AS Request for 2005-2009 Restricted Prep 4.6 3V Parts #27909engineaddedengineAS Ford Mustang Coupe GT 4.6L 3V Restricted Prep now permits Ford Performance camshaft kit P/N M-6550-3V.
AS Request for Full Preparation Classification for 2010-2014 Camaro #28030wordingunclear2010-2014 Camaro remains classified in AS; no specification changes.
AS Cylinder Heads #28696wordingunclearAS class cylinder head supplier discontinuation; replacement option pending for 2021 season.
AS Request for Max Rotor Diameter Change #28748otherfasterAS Mustang, Capri, Camaro, and Firebird maximum brake rotor diameter increased from 12.2 to 13.1 inches.
AS Request increase rotor diameter #28797wordingunclearunclear
F5 Request for Cockpit Adjustment of External Jetting Devices #28359wordingunclearF5 request to adjust external jetting device cockpit control denied; no rule change made.
F5 Two Stroke Motors (reply to #28359 WDYT) #28816engine
F5 Re letter requesting driver adjustable carb mixture #28840wordingunclearF5 driver adjustable carburettor mixture: refer to separate Fastrack letter #28359 for ruling.
F5 #28359 WDYT Request for Cockpit Adjustment #28875wordingunclearF5 cockpit adjustment request response published in Fastrack letter 28359.
B-Spec Request to change units on wheelbase for consistency with wording #28786wordingwordingB-Spec wheelbase specifications converted from inches to millimetres for all cars across the class.
AS weight adjustments for 2020 season #28785weight -50 lbs
B-Spec Transmission cooler for automatic equipped cars #28171cars addedaddedB-Spec Chevrolet Sonic adds 5dr Hatch with 34mm restrictor; both body styles allow Setrab FP119M221 transmission cooler for automatic cars.
B-Spec Spring Update for all models #28384suspension & brakesaddedsuspension & brakesB-Spec: multiple models allow specific suspension kits and damper assemblies, effective 2020-05-01.
B-Spec Request to Cleanup Sunroof Wording #28401wordingwordingB-Spec sunroof retention wording clarified; cars must retain sunroofs securely bolted unless rails adequately secure the panel.
B-Spec B-Spec Balance of Performance based on 2018 and 2019 seasons #28394induction -25 lbsslowerinductionB-Spec Ford Fiesta 5dr gets 36mm restrictor, 4dr gets 34mm; Honda Fit 09-12 loses 25 lbs to 2525; Fit 15-20 restrictor tightens to 30mm; Mini Cooper 07-10 gets 40mm restrictor.
FF E&O FF Kent Engine alternator language #28204engineaddedengineFF Kent Engine alternator becomes optional instead of not required.
B-Spec Request for Model Years Updating #27850cars addedaddedB-Spec Chevrolet Sonic, Fiat 500, Ford Fiesta 5dr and 4dr, Honda Fit model years expanded to include 2019 or through 2019.
B-Spec Request to classify Min Cooper models #27861cars addedaddedB-Spec adds six Mini Cooper models (02-06 R50, 07-10 R55, 12-15 R58, 11-15 R55, 11-13 R60, R61), weights 2545–2625 lbs, four with 40 mm restrictor.
B-Spec remove fog lights #27947wordingremovedB-Spec fog lamps may now be removed; holes must be completely covered.
B-Spec add sonic sedan #27948cars addedaddedB-Spec adds Chevrolet Sonic 4dr Sedan 12–19, 1796 cc, 2650 lbs, with 32mm restrictor.
FF Honda Racing HPD low cost ECU proposal #27563engineaddedengineFF permits HPD LC1 ECU with lambda sensor; E1 ECU no longer supported but existing units may continue.
FF Update rain tire designation #28443tyres & wheelsaddedtyres & wheelsFF rain tyres now allow Hoosier W3 Radial 185/60R13 front and 205/60R13 rear.
AS Rear Trailing Arms #28007suspension & brakesaddedsuspension & brakesAS rear trailing arms may be replaced with tubular arms maintaining stock length and axle location purpose only.
AS Weight reduction for cars running iron heads #28010weightfasterweightAS Ford and GM full prep cars get increased weight reduction from 150 to 200 lbs.
AS 05-10 Mustang with HR cam classification #28226cars addedadded05-10 Ford Mustang Coupe GT 4.6L OHC classified AS with 3200 lbs minimum weight, HR cam permitted.
AS 10-15 Camaro Full Prep classification #28227cars addedadded10-15 Camaro Full Prep classified AS with 3400 lbs base weight, 3700 lbs over 313 CID, specific head castings and Edelbrock heads permitted.
B-Spec Request for Automatic Transmission Inclusion #27686cars addedaddedB-Spec automatic and CVT transmissions now legal for all permitted cars meeting their spec line; OEM paddle shifters acceptable.
B-Spec Request to Add Transmission Coolers to Automatics #27687otheraddedB-Spec automatic transmissions may use auxiliary coolers on case-by-case approval with submitted part numbers.
B-Spec Add Yaris Sedan #26797cars addedaddedB-Spec adds Toyota Yaris Sedan 2007-, 1491 cc, 2400 lbs, with specified Bilstein, swaybar, and K&N intake.
B-Spec Add 2011-2016 Fiesta Sedan #26798cars addedaddedB-Spec adds 2011-2016 Ford Fiesta 4dr Sedan, 1596 cc, 2495 lbs minimum weight.
B-Spec add 2015-2019 Kia Rio #26799cars addedaddedB-Spec Kia Rio 5-door LX model years extended to 2012–2019.
B-Spec Error and Omissions #27858suspension & brakesaddedsuspension & brakesB-Spec Mazda2 10-14: suspension parts, intake, exhaust header, and bushings added to allowed list.
F5 Change 600cc restrictor size #27883inductionslowerinductionF500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 restrictor reduced to 28mm from 29mm.
B-Spec Request for Correction of Production Years for Mini Cooper #27226wordingwordingB-Spec Mini Cooper production years clarified to 2011-13.
2:02.938Gregory Eaton · fastest of 17 · top 5 within 0.8s
2:03.900James Jost · fastest of 16 · top 5 within 2.1s
153.9James Jost
1:57.361Wiley Mcmahan · fastest of 15 · top 5 within 3.8s
1:57.572Wiley Mcmahan · fastest of 15 · top 5 within 4.0s
142.8Eric McRee
-6.328squal -5.577s
94.9%qual 95.5%
1:59.563Tyler O'Connor · fastest of 14 · top 5 within 1.4s
2:20.474Jonathan Kotyk · fastest of 14 · top 5 within 6.3s
136.2Derek Ketchie
+16.574squal -3.375s
113.4%qual 97.3%
2:22.368Frank Schwartz · fastest of 26 · top 5 within 0.8s
2:22.094David Daughtery · fastest of 24 · top 5 within 0.8s
112.2John Phillips
+18.194squal +19.430s
114.7%qual 115.8%
16 rule changes (AS: 4, F5: 1, FF: 3, B-Spec: 8)6 cars added · 2 aero · 2 engine · 2 weight · 4 wording · AS Spec Mustang (SMG) added as Restricted Prep class. · B-Spec Mazda 2, Fiat 500, 2007–10 Mini Cooper permitted to replace primary cat/exhaust manifold with approved header, retaining oxygen sensors. · B-Spec removes time limit on car eligibility; cars now compete indefinitely once classified. · B-Spec Honda Fit model year range extended to include 2013. · F500 Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 minimum weights increase to 900 lbs. · AS class ride height minimum clarified: five inches measured at rocker panel, excluding seams and stock effects. · B-Spec 2007-10 Mini Cooper adds OBX header part #10-2101-2S as E&O allowance. · AS Ford Mustang 79-93 non-Cobra drops 100 lbs to 3150; over 313 CID Cobra drops 100 lbs to 3450. · B-Spec added to GCR 9.3.26 fuel cell exception list; stock fuel tank permitted. · AS adds Spec Mustang SMG classification with 107.1 wheelbase, 3.73 gears, 355mm front and 300mm rear brakes. · FF Honda Fit cylinder honing increased to 73.315mm and oversize pistons PN 13020-RB7-Z00 now permitted with matching ring packs. · FF intake manifold thermal wrap now permitted if easily removable for inspection; no coating allowed. · FF clarifies coolant and oil catch tank capacity requirements: coolant minimum one U.S. pint, oil minimum one U.S. quart per system. · B-Spec adds Canadian Nissan Micra Cup Car, 1598 cc, 2450 lbs minimum, with Micra Cup suspension kit allowed. · B-Spec Toyota Yaris 12-18 added with 1491cc engine, 3.55 first gear, Bilstein B14 suspension, K&N intake allowed. · B-Spec exhaust wording clarified: oxygen sensors must stay stock location, primary catalyst unmodifiable.showhide
AS Request to add SMG to 9.1.6.B.1 AS Intent #27140cars addedaddedAS Spec Mustang (SMG) added as Restricted Prep class.
B-Spec Request for Corrections to 9.1.10 E Item #27 D and E #27224aeroaddedaeroB-Spec Mazda 2, Fiat 500, 2007–10 Mini Cooper permitted to replace primary cat/exhaust manifold with approved header, retaining oxygen sensors.
B-Spec Remove wording in the B-spec rules #27388wordingaddedB-Spec removes time limit on car eligibility; cars now compete indefinitely once classified.
B-Spec Request to add 2013 Honda Fit model year #27491cars addedaddedB-Spec Honda Fit model year range extended to include 2013.
F5 Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbsslowerweightF500 Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 minimum weights increase to 900 lbs.
AS Request Ride Height Clarification #26598wordingwordingAS class ride height minimum clarified: five inches measured at rocker panel, excluding seams and stock effects.
B-Spec Request to allow OBX Header for 2007-10 Mini Cooper #26977engineaddedengineB-Spec 2007-10 Mini Cooper adds OBX header part #10-2101-2S as E&O allowance.
AS Request to Revert to 2017 Weights #25885weightfasterweightAS Ford Mustang 79-93 non-Cobra drops 100 lbs to 3150; over 313 CID Cobra drops 100 lbs to 3450.
B-Spec Request to add B-Spec to GCR 9.3.26 fuel cell #26132cars addedaddedB-Spec added to GCR 9.3.26 fuel cell exception list; stock fuel tank permitted.
AS SMG Mustang eligibility in American sedan #26224cars addedaddedAS adds Spec Mustang SMG classification with 107.1 wheelbase, 3.73 gears, 355mm front and 300mm rear brakes.
FF Request for Oversize Honda Fit Pistons #25810enginefasterengineFF Honda Fit cylinder honing increased to 73.315mm and oversize pistons PN 13020-RB7-Z00 now permitted with matching ring packs.
FF Heat Shield - Fit Intake #26102aeroaddedaeroFF intake manifold thermal wrap now permitted if easily removable for inspection; no coating allowed.
FF Request catch cans/tanks clarification #26158wordingwordingFF clarifies coolant and oil catch tank capacity requirements: coolant minimum one U.S. pint, oil minimum one U.S. quart per system.
B-Spec Request to classify Canadian Nissan Micra Cup cars #25216cars addedaddedB-Spec adds Canadian Nissan Micra Cup Car, 1598 cc, 2450 lbs minimum, with Micra Cup suspension kit allowed.
B-Spec Request updated Toyota Yaris Spec Lines #25483cars addedaddedB-Spec Toyota Yaris 12-18 added with 1491cc engine, 3.55 first gear, Bilstein B14 suspension, K&N intake allowed.
B-Spec Update wording of exhaust #26022wordingwordingB-Spec exhaust wording clarified: oxygen sensors must stay stock location, primary catalyst unmodifiable.
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of AS's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.