AS + SRF + T2 + F6 at Michelin Raceway Road Atlanta

2023-04-01 T2 Allowance of any nonmetallic bushing material in T2

#33833 from Tyler Quance · Rule change · TB 23-04 (2023-04 Fastrack)

In Touring (T2-T5) Category Specifications, GCR Section 9.1.9.2.D.5.c.1., change as follows:
"All T2-T3 cars are allowed to replace OEM upper and lower control arm bushings with polyurethane, or delrin, or alternate
synthetic materialbushings."

2023-04-01 T2 Allow Adjustable stabilizer bar links

#33861 from John Heinricy · Rule change · TB 23-04 (2023-04 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), add to Notes as follows:
"Adjustable sway bar end links permitted."

Applies to Cadillac CT4 Blackwing on this page: John Heinricy

2023-05-01 T2 C5 Z06 Straight Line Speed

#33575 from Charlie Abell · Rule change · TB 23-05 (2023-05 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change Weight (lbs) as follows:
"3425 w/53mm 56mm flat plate restrictor)
3350 (w/58mm flat plate restrictor, only permitted when using OEM Wheels and Stock Brakes)"

Applies to Chevrolet Corvette on this page: William Bolt, James Davidson, Carl Fung

2023-05-01 SRF Update SRF Front W2 Rain Tire Part Number

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

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

2023-06-01 T2 2009 Porsche Cayman Classing Request

#34147 from Lisa Hunsicker · Rule change · TB 23-06 (2023-06 Fastrack)

In T2 Spec Lines, Porsche Cayman S (06-08), change year as follows:
"Porsche Cayman S (06-08) (06-09)"

Applies to Porsche Cayman on this page: Raphael Assuncao

2023-06-01 SRF Hoosier SRF Wet Front Tire Rule Update

#34189 from Robey Clark · Rule change · TB 23-06 (2023-06 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."

2023-07-01 T2 370Z Obsolete Parts & NISMO Alternatives to SPL Parts

#34297 from Zach Hayward · Rule change · TB 23-06 (2023-05 Fastrack)

In T2 Spec Lines, Nissan 370Z (09-17) / 370Z NISMO Edition (09-17), change Notes as follows:
5300S-SS370 T-2 spring kit allowed; 54600-SS370 T-2 front and rear sway bar kit allowed. Sway Bars allowed 35mm (f). 29mm
(r). Sports Package is allowed. Springs up to 1000 lbs/in front and rear allowed. 54010- SZ350 (F) and 55020-SZ350 (R) allowed.
Cold Air Intake allowed. Performance Alternative Header permitted - Part #14002-SS370. Rear spring relocation permitted to
allow coil over shocks. SPL suspension kit permitted that includes: rear camber arms #SPL RLL Z34 or Nismo 551A0-RLLRZ, SPL
rear toe arms #SPL RTA Z34, SPL rear traction arms #SPL RTR Z34 or Nismo 55110-RTRRZ, SPL front camber arms #SPL FUA Z34 or
54525-FUAZ4, SPL rear mid link #SPL RML Z34 or Nismo 551B0-RMLZ4. Zspeed and Z1 alternative clutch slave permitted. The
following STOPTECH parts are allowed with a 50 Lb penalty: #83.488.6800.51 front, 83.657.0057.51 rear.

2023-08-01 AS Crate Motor Part Numbers

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

2023-08-01 AS Request wheel size change

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

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

2023-08-01 AS Alternative Upper Front Control Arms for Dodge Challenger

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

2023-08-01 AS Front Brake Caliper Adapters for Dodge Challenger

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

2023-08-01 T2 Rules Clarification for Mazda RX8 Spec Line

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

2023-08-01 T2 rule book corrections

#34437 from Chi Ho · Rule change · TB 23-08 (2023-08 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."

2023-08-01 T2 Corvette LS2 Restrictor Plate Adjustment

#34456 from Brian LaCroix · Rule change · TB 23-08 (2023-05 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Notes as follows:
"LS2: 58mm 60mm flat plate restrictor is required."

2023-08-01 T2 Ride Height Correction for the T3 Solstice.

#34615 from Joe Aquilante · Rule change · TB 23-08 (2023-08 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."

2023-08-01 T2 Blacking Cadillac Fuel Capacity

#34624 from John Heinricy · Rule change · TB 23-08 (2023-05 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), add to Notes the following:
"Radium fuel surge tank permitted. Radium tank and all associated hoses must be located behind a fireproof bulkhead or in the
engine compartment."

Applies to Cadillac CT4 Blackwing on this page: John Heinricy

2023-10-01 SRF SRF Radiator Rule Update

#34805 from Robey Clark · Rule change · TB 23-10 (2023-10 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."

2023-12-01 T2 M2 CS RACING

#35122 from Clark Giguiere · Rule change · TB 23-12 (2023-12 Fastrack)

In T2 Spec Lines, BMW M2 CS Cup 2020-, add to Notes the following:
"Hood vents conforming to 9.1.9.2.D.8.a.7 are permitted."

Applies to BMW M2 CSR on this page: Aaron Kaplan, James Keown, Judson Holt, Russell King, Steven Greenhill

2024-01-01 SRF Update SRF Rain / Brake Rule

#34706 from Robey Clark · Rule change · TB 23-09 (2023-09 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."

2024-01-01 SRF Update SRF Brake Light Rule v1

#34853 from Robey Clark · Rule change · TB 23-10 (2023-10 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."

2024-01-01 T2 Rebalance Blackwing Cadillac T2

#35079 from John Heinricy · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), change as follows:
Wheel size: "(F) 18 x 10 (R) 18 x 11"
Notes: "Sway bars permitted 35mm (f), 30mm (r)"

Applies to Cadillac CT4 Blackwing on this page: John Heinricy

2024-01-01 T2 M2 CS RACING

#35130 from Clark Giguiere · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, BMW M2 CS Cup (2020-), change weight as follows:
"3600 3550"
In T2 Spec Lines, BMW M235iR (-2016), change weight as follows:
"3350 3300"

Applies to BMW M2 CSR on this page: Aaron Kaplan, James Keown, Judson Holt, Russell King, Steven Greenhill

2024-01-01 T2 Spec Corvette in T2

#35139 from David Sanders · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Spec Corvette, change as follows:
Weight: "3375 3200"
Notes: "Cars must comply with all Spec Corvette rules dated 3-1-2 1 11-28-22 including fuel and tires. No tire treatment or
rubber softeners are permitted. T2 requirements of 3.75” min ride height and 53mm flat plate restrictor required. Any 295 DOT
tire approved with +200lb. Limited to 380 HP. Nankang NS-2R Tires conforming to Spec Corvette rules are required."

2024-01-01 T2 T2 Viper BoP

#35155 from Scotty B White · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Dodge Viper SRT-10 incl. coupe (03-06), change Tire Size as follows:
"(F) 315/35 (R) 345/30 335/30"

Applies to Dodge Viper on this page: Scotty B White

2024-01-01 T2 BOP Adjustment for 5.0L Mustangs

#35156 from Kurt Rezzetano · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (11-14), change as follows:
Min weight: "3500 3575"
Notes: "58mm 60mm flat plate restrictor required."
In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), change as follows:
Min Weight: "3600 3650"
Notes: "58mm 59mm flat plate restrictor required."
In T2 Spec Lines, Ford Mustang GT5.0L(2018-), change as follows:
Min Weight: "3600 3650"

Applies to Ford Mustang on this page: Michael Kamalian

2024-01-01 T2 Take at Look at T-2 BOP

#35161 from Joe Aquilante · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows:
Min Weight: "3550 3500"
Notes: "56mm 58mm flat plate restrictor required."

2024-01-01 T2 C5 Corvette Spec Line Oversight

#35169 from Carl Fung · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change as follows:
Min Weight: :3425 w/56mm flat plate restrictor)"
Notes: "59mm flat plate restrictor required."
In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13) change Notes as follows:
"LS2: 60mm 63mm flat plate restrictor is required. LS3: 50mm 53mm flat plate restrictor is required."

Applies to Chevrolet Corvette on this page: William Bolt, James Davidson, Carl Fung

2024-01-01 T2 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)"

2024-01-01 SRF SRF / SRF3 Rule Updates

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

2024-02-01 T2 2015+ Mustang Sway Bar and A-Arm Request

#35154 from Scotty B White · Rule change · TB 24-02 (2024-01 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), add to Notes the following:
"BMR rear upper control arm camber links part #UTCA064 permitted."

Applies to Ford Mustang on this page: Michael Kamalian

2024-02-01 T2 Brake Kits

#35245 from David Woodle · Rule change · TB 24-02 (2024-01 Fastrack)

In T2 Spec Lines, add to Notes the following:
Chevrolet Camaro SS (98-02): “Four or six piston front calipers allowed.”
Chevrolet Camaro, 1LE (2016-): “Four or six piston front calipers allowed.”
Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04): “Four or six piston front calipers allowed.”
Chevrolet Corvette C6 Coupe / Grand Sport (05-13): “Four or six piston front calipers allowed.”
Chevrolet Corvette Z06 (06-12): “Four or six piston front calipers allowed.”
Pontiac Firebird (98-02): “Four or six piston front calipers allowed.”
Pontiac Solstice GXP Coupe/Convertible (07-09): “Four or six piston front calipers allowed.”

2024-02-01 T2 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."

2024-02-01 T2 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."

2024-02-01 T2 Runoffs wording on Caddy in T2

#35377 from Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing(2022-), change Notes as follows:
"THIS CAR DOES NOT QUALIFY FOR SCCA RUNOFFS COMPETITION UNTIL IT HAS BEENREPRESENTED IN 3 SCCA SUPER
TOUR EVENTS."

Applies to Cadillac CT4 Blackwing on this page: John Heinricy

2024-02-01 T2 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)

2024-02-01 T2 Reply to letter #35161 and #31661

#35384 from Andrew Aquilante · Rule change · TB 24-02 (2024-02 Fastrack)

In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows:
Min Weight: "3500 3575"
Notes: "58mm 60mm flat plate restrictor required"

2024-03-01 AS Request to Classify 1970-1981 Camaro and Firebird in AS

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

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

2024-03-01 AS Fuel Cell 12

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

2024-03-01 T2 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"

2024-03-01 AS Please Classify the 6th Gen Into AS.

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

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

2024-03-01 T2 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”

2024-03-01 T2 Letter #35154 2018+ Mustang GT Expansion

#35488 from Michael Kamalian · Rule change · TB 24-03 (2024-03 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows:
"BMR rear upper control arm camber links part #UTCA064 permitted."

Applies to Ford Mustang on this page: Michael Kamalian

2024-03-01 AS spec lines

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

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

2024-04-01 AS Restricted Prep Aftermarket Parts Request

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

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

2024-04-01 T2 Brake Request for 2009 Porsche Cayman

#35723 from Jason Ott · Rule change · TB 24-04 (2024-04 Fastrack)

In T2 Spec Lines, Porsche Cayman S (06-09), add to Notes the following:
"The following brake kit is allowed in its entirety with a 50 lb penalty- (f) StopTech ST60 (83.788.6700), rotor size 355X32
(r) StopTech ST40 (83.799.0046), rotor size 332X32."

Applies to Porsche Cayman on this page: Raphael Assuncao

2024-04-01 AS Allowance of 11

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

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

2024-05-01 AS 6th gen Camaro limited prep

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

2024-05-01 T2 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."

2024-05-01 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)

2024-05-01 AS Full Prep Head

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

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

2024-05-01 T2 Competition Adjustment Request/Wheel Size of E46

#35895 from David Newman · Rule change · TB 24-05 (2024-05 Fastrack)

In T2 Spec Lines, BMW M3 (01-06), change Max Wheel Size (inch) as follows:
"18 x 9 18 x 10"

2024-05-01 T2 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."

2024-06-01 AS Request for Classification of 2018-2023 mustang In

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

2024-07-01 T2 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."

Applies to Ford Mustang on this page: Michael Kamalian

2024-07-01 T2 S550 Brakes

#35926 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)

In T2 Spec Lines, Ford Mustang Ecoboost 2.3 (2015-), add to Notes the following:
"100LB for Mustang S550 2015-17 5.0 Gen2 and 2018-23 5.0. Gen3 reduce weight by 100Lb when using 4 piston stock
or Brembo brakes with 355mm rotors."

2024-07-01 T2 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."

Applies to Ford Mustang on this page: Michael Kamalian

2024-07-01 T2 request for allowance of 6 piston calipers for T2 C5 corvettes

#36126 from Joe Aquilante · Rule change · TB 24-07 (2024-07 Fastrack)

In T2 Spec Lines, add to Notes the following:
Chevrolet Camaro SS (98-02): Four or six piston front calipers allowed.
Chevrolet Camaro, 1LE (2016-): Four or six piston front calipers allowed.
Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04): Four or six piston front calipers allowed.
Chevrolet Corvette C6 Coupe / Grand Sport (05-13): Four or six piston front calipers allowed.
Chevrolet Corvette Z06 (06-12): Four or six piston front calipers allowed.
Pontiac Firebird (98-02): Four or six piston front calipers allowed.
Pontiac Solstice GXP Coupe/Convertible (07-09): Four or six piston front calipers allowed.

2024-07-01 T2 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.

2024-08-01 T2 Errors

#36214 from Touring Committee · Rule change · TB 24-08 (2024-08 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Required Restrictor as follows:
"LS2: "53 63mm flat plate restrictor"
In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows:
Min Weight: "3575 3500"
Required Restrictor: "60mm FRP 58mm flat plate restrictor"

2024-08-01 T2 Subaru Appeal

#36258 from Anthony Piselli III · Rule change · TB 24-08 (2024-08 Fastrack)

In T2 Spec Lines, Subaru Impreza WRX STi (03-07), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal**"
In T2 Spec Lines, Subaru Impreza WRX STi (08-11), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal**"

2024-08-01 SRF Update Rain Tire Rule and Hoosier Decal Placement

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

2024-08-01 T2 S550 Brakes

#36571 from Club Racing Board · Rule change · TB 24-08 (2024-08 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), add to Notes as follows:
"Mustang S550 2015-17 5.0 Gen2 and 2018-23 5.0. Gen3 reduce weight by 100Lb when using 4 piston stock or Brembo brakes
with 355mm rotors."
In T2 Spec Lines, Ford Mustang GT 5.0L (18 -), add to Notes as follows:
"Mustang S550 2015-17 5.0 Gen2 and 2018-23 5.0. Gen3 reduce weight by 100Lb when using 4 piston stock or Brembo brakes
with 355mm rotors."
In T2 Spec Lines, Ford Mustang Ecoboost 2.3 (2015-), change Notes as follows:
"Reduce weight by 100Lb when using either stock 355mm 4 piston brakes or m2300s 355mm 4 piston Ford brake kit."

Applies to Ford Mustang on this page: Michael Kamalian

2024-09-01 SRF Protest Fee Clarification

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

2024-09-01 SRF Update to Letter 36619 with new Hoosier Contingency Decal Info

#36624 from Robey Clark · Rule change · TB 24-09 (2024-09 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."

2024-09-01 AS Mustang transmission ratios

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

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

2024-10-01 SRF Update SRF3 Air Filter Rule

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

2024-10-01 SRF Update SRF Brake Rotor Thickness

#36687 from Robey Clark · Rule change · TB 24-10 (2024-10 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”)."

2024-10-01 SRF Hoosier Tire Decal Placement

#36739 from Robey Clark · Rule change · TB 24-10 (2024-10 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."

2024-11-01 T2 Spec Corvette Change for T2

#37127 from Joe Aquilante · Rule change · TB 24-11 (2024-11 Fastrack)

In T2 Spec Lines, Spec Corvette, change Notes as follows:
"Cars must comply with all Spec Corvette rules dated 11-28-22 including fuel and tires. No tire treatment or rubber softeners are
permitted. Limited to 380 HP. Nankang NS-2R Tires conforming to Spec Corvette rules are required or a 295 R compound DOT
tire."

2024-12-01 T2 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."

2024-12-01 T2 Request Less Restriction for Ls-3 Engined C6 Corvette

#36810 from Joe Aquilante · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Restrictor Required as follows:
"LS3: 53mm 56mm flat plate restrictor"

2024-12-01 T2 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."

2024-12-01 T2 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

2024-12-01 T2 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."

2024-12-01 T2 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.

2024-12-01 T2 Corvette Wheels

#37169 from Brian LaCroix · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Max Wheel Size as follows:
"18 x 10 11 (F) 19 x 11 (R) or 18 x 11 (F) 19 x 13 (R)"

2024-12-01 T2 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."

2024-12-01 T2 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:

2024-12-01 T2 Please Consider Allowing Update to the C5 Corvette

#37298 from DAVID WOODLE · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change Restrictor Required as follows:
"59mm FRP LS1: 59mm FPR, LS2: 63mm FPR, LS3: 56mm FPR"

Applies to Chevrolet Corvette on this page: William Bolt, James Davidson, Carl Fung

2024-12-01 T2 Major error in lane, but nobody ran it.

#37302 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, delete Chevrolet Corvette Z06 (06-12) Spec Line in its entirety.

2025-01-01 AS Increase Coyote Engine Restrictor to 80mm

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

2025-01-01 AS Performance Pack for 2015+ Mustang

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

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

2025-01-01 AS Gear Ratios

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

2025-01-01 T2 BoP for the Various Mustangs

#37185 from Scotty B White · Rule change · TB 25-01 (2025-01 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (11-14), change as follows:
Weight: "3575 3525"

Applies to Ford Mustang on this page: Michael Kamalian

2025-01-01 AS ECU specs for LS engine

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

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

2025-01-01 T2 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)

2025-01-01 T2 Spec Corvette Line Clarification.

#37441 from Joe Aquilante · Rule change · TB 25-01 (2025-01 Fastrack)

In T2 Spec Lines, Spec Corvette, change as follows:
Weight: "SC-3200, SC+-3300* See Notes Section"
Notes: "Cars must comply with all Spec Corvette rules dated 11-28-22 including fuel and tires. No tire treatment or rubber
softeners are permitted. Limited to 380 HP. Nankang NS-2R Tires conforming to Spec Corvette rules or a 295 R compound DOT
tire. Cars must conform to Spec Corvette rules dated 11/2022. Master cylinder part number GM 19418187 and Booster part
number 19418516 permitted. Limited to 380 HP. Any 200tw 315 tire permitted if used on all 4 corners or a 295 R compound DOT
tire.
Modifications to Radiator Air Shroud to increase radiator cooling efficiency is allowed. Replacement of factory air shroud with

2025-02-01 T2 Mustang Update backdate

#37275 from Scotty B White · Rule change · TB 25-02 (2025-02 Fastrack)

In T2 Spec Lines, combine Ford Mustang GT 5.0L (15-17) and Ford Mustang GT 5.0L (2018-) and change as follows:
Delete in its entirety: "Ford Mustang GT 5.0L (15-17)"
"Ford Mustang GT 5.0L (2018-)(15-23)"
Required Restrictor: 58mm flat plate restrictor 2015-17 5.0 Gen 2 63mm FPR, 2018-23 5.0. Gen 3 60mm FPR"
Gear Ratios: "3.66, 2.43, 1.69, 1.32, 1.00, 0.65 or 4.69, 2.98, 2.14, 1.76, 1.52, 1.27, 1.00, 0.85, 0.68, 0.63 or 4.17, 2.34, 1.52, 1.14,
0.87, 0.69"
Notes: "Ford Performance Handling Kit part #M-FR3A-M8, Sway Bars in M-FR3A-M8 kit part #M5490-E or M5490-G, Rear Toe
Bearing part #M-5A460-M, Ford Performance Radiator part #M-8005-M8,Strut Tower Brace part# M-20201-M, Camber Bolts M-

Applies to Ford Mustang on this page: Michael Kamalian

2025-02-01 T2 BOP Adjustment for 2016 - Camaro SS/1LE

#37434 from Kurt Rezzetano · Rule change · TB 25-02 (2025-02 Fastrack)

In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows:
"Chevrolet Camaro, 1LE (20 16-25)"
Required Restrictor: "58mm 62mm FPR"
Min Weight: "3500 3600"

2025-02-01 T2 BMW M235iR TCS CHANGE REQUEST

#37470 from Werner Kordas · Rule change · TB 25-02 (2025-02 Fastrack)

In T2 Spec Lines, BMW M235iR (-2016), add to Notes the following:
"Oil cooler and radiator permitted according to touring rules. Silicone charge pipe permitted."

2025-02-01 T2 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.

2025-03-01 T2 T2 BOP

#37312 from Touring Committee · Rule change · TB 25-01 (2025-01 Fastrack)

In T2 Spec Lines, BMW M2 CS Cup 2020-, change Notes as follows:
"Effective 3/1/2025 It is mandatory to run the “Purple” power stick part #8324089"Red" power stick part #8324085."
In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change Required Restrictor as follows:
"Effective 3/1/2025 59mm 58mm"

Applies to BMW M2 CSR on this page: Aaron Kaplan, James Keown, Judson Holt, Russell King, Steven Greenhill

Applies to Chevrolet Corvette on this page: William Bolt, James Davidson, Carl Fung

2025-03-01 AS Race memo

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

2025-04-01 T2 Please class the Darkhorse R in T2

#37295 from Touring Committee · Rule change · TB 25-04 (2025-04 Fastrack)

In T2 Spec Lines, classify the Ford Mustang Challenge Darkehorse R.

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

2025-04-01 AS Flotek Head Plunge Cut Inconsistencies

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

2025-04-01 T2 T2 350Z Spec Line Cleanup

#37603 from Ben Slechta · Rule change · TB 25-04 (2025-04 Fastrack)

In T2 Spec Lines, Nissan 350Z Track/ Touring/ Standard/ Nismo Spec Z (03-08), change Notes as follows:
"Nissan Motorsports: Shock Front left P/N E6110-SZ350 & Front right E6111-SZ350 & rear E6210-SZ350, Springs front P/N
54010-SZ350 & rear 55020-SZ350, F&R 5600S-SZ350, Front roll bar #54611-SZ350, Rear roll bar #562300-SZ350, Bushings P/N
(54541, 54560, 55045, 55148, 55149, 55152, 55153, 55158, 56218) - RRZ30 allowed. Nismo flywheel permitted. SPC Control
Arms 72125 and 72123 are allowed. Aftermarket flywheel permitted at minimum 14lbs. Aftermarket headers permitted, cold air
intake permitted. Aftermarket big brake kit 4 piston front permitted up to 355x32 SPL pro V3 front upper camber caster control
arms for the 350z part# SPLFUAZ33 permitted. SPL rear toe links part# SPL RTA Z33 permitted. Stillen part #400338 permitted.
44011-RC350 rear caliper kit permitted, 43206-SZ350 Right rotor permitted, 43207-SZ350 Left rotor permitted. Must conform to

2025-04-01 AS Notes clean up

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

2025-04-01 SRF Driver Safety & Comfort

#37966 from Robey Clark · Rule change · TB 25-04 (2025-04 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."

2025-04-01 SRF Update SADEV transmission specs

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

2025-05-01 T2 C6 T-2 Corvette 6 Liter Engine Restrictor

#37490 from Joe Aquilante · Rule change · TB 25-05 (2025-05 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), Required Restrictor, change as follows:
LS2: "63mm 67mm FPR"

2025-05-01 T2 370Z Mid link Replacement for True Coil Overs and OEM Wheel Size

#38014 from Zachary Hayward · Rule change · TB 25-05 (2025-05 Fastrack)

In T2 Spec Lines, Nissan 370Z (09-17) / 370Z NISMO Edition (09-17), change as follows:
Max Wheel Size: "19 x 10 10.5"
Notes: "5300S-SS370 T-2 spring kit allowed; 54600-SS370 Sway Bars allowed 35mm (f). 29mm (r) Sports Package is allowed.
Springs up to 1000 lbs/in front and rear allowed. 54010- SZ350 (F) and 55020-SZ350 (R) allowed. Cold Air Intake allowed.
Performance Alternative Header permitted. Rear spring relocation permitted to allow coil over shocks. SPL suspension kit
permitted that includes: rear camber arms #SPL RLL Z34 or Nismo 551A0-RLLRZ, , SPL rear traction arms #SPL RTR Z34, or Nismo
55110-RTRRZ SPL front camber arms #SPL FUA Z34,or 54525-FUAZ4 SPL rear mid link #SPL RML Z34 or Nismo 551B0-RMLZ4. SPL
Part# SPL RTA Z34D or NISMO Part# 551B0-RTARZ permitted. Zspeed and Z1 alternative clutch slave permitted. The following

2025-05-01 AS Errors and Omission

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

2025-05-01 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)

2025-05-01 T2 T2 Cadillac tire

#38210 from Touring Committee · Rule change · TB 25-05 (2025-05 Fastrack)

In T2 Spec Lines, CT4-V Blackwing (2022-), change Tire Size Max as follows:
“295 315”

2025-06-01 AS Errors and Omissions

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

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

2025-07-01 AS RE: Previous Letter 37695 Update

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

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

2025-08-01 T2 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"

2025-08-01 T2 Clarifications needed to BMW M2 CS cup line

#38536 from Joe Aquilante · Rule change · TB 25-08 (2025-08 Fastrack)

The BMW M2 CS Clubsport is classed in T1, not T2. Please visit the following web address for vehicle details about the car's base
allowances-
https://www.bmwusa.com/motorsport/bmw-m2-
cs.html#:~:text=The%20BMW%20M2%20CS%20Racing%20models%20are%20powered%20by%20a,M2%20CS%20Racing%20Rec
ommended%20Mileage.
In T2 Spec Lines, BMW M2 CS Cup 2020, change as follows:
Model: "BMW M2 CS Cup 2020-2021"
Notes: "DOT approved tires required. All other components must be as homologated from BMW Motorsports. No other changes

Applies to BMW M2 CSR on this page: Aaron Kaplan, James Keown, Judson Holt, Russell King, Steven Greenhill

2025-08-01 T2 Fix brake allowance supersessions.

#38554 from Touring Committee · Rule change · TB 25-08 (2025-08 Fastrack)

In T2 Spec Lines, change Brakes as follows:
Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04): "(F) 325 Vented Disc (R) 305 Vented Disc May use two piece
steel rotors with aluminum hats up to 5% larger than 340/330; Any four piston calipers and brackets are permitted. Any brake
caliper pistons are allowed; may use the Wilwood SL6R brake caliper. Stock calipers and rotors only (F) 325 (R) 305"
Chevrolet Corvette C6 Coupe / Grand Sport (05-13): "(F) 325 / 340 Vented Disc (R) 305 / 330 Vented Disc or (F) 355 x 32 Vented
Disc (R) 340 x 26 Vented Disc or May use 2-pc steel rotors with alum. hats up to 5% larger than Z51 rotor. LS2 may use Grand
Sport brake package. Any brake caliper pistons allowed. May use any four piston brake caliper and brackets. Z06 brake calipers
allowed."

2025-08-01 T2 C5 Corvette correction

#38782 from Touring Committee · Rule change · TB 25-08 (2025-08 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change Restrictor Required as follows:
"LS1: 59 58mm FPR,
LS2: 63mm FPR,
LS3: 56mm FPR,
LS6: 58mm FPR"

Applies to Chevrolet Corvette on this page: William Bolt, James Davidson, Carl Fung

2025-10-01 SRF Add HD Oil Cooler

#38979 from Robey Clark · Rule change · TB 25-10 (2025-10 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."

2025-11-01 AS Cadillac CTS-V BOP Weight Change

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

2025-11-01 T2 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."

2025-11-01 T2 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

2025-11-01 T2 Touring 2 Post-Runoffs BOP Adjustments and Changes

#39274 from Touring Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In T2 Spec Lines, Spec Corvette, change as follows:
Weight: "SC3200 SC+- 3300 See notes section"
Notes: "The following “Spec Corvette +” allowances are permitted with a base weight of 3300 lbs:"
In T2 Spec Lines, Ford Mustang GT 5.0L (11-14), change Restrictor as follows:
"60mm 62mm flat plate restrictor"
In T2 Spec Lines, Ford Mustang GT 5.0L (2015-23), change Tire Size as follows:
"295 315"
In T2 Spec Lines, Porsche 911 / 996 (98-05), change Weight as follows:

Applies to Ford Mustang on this page: Michael Kamalian

2025-11-01 T2 Adjust rev limit on Spec Corvette in T2

#39282 from Touring Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In T2 Spec Lines, Spec Corvette, add to Notes the following:
"7) up to 7100 rpm Rev limit."

2025-12-01 T2 Help the 2011-2014 s197Mustang GT and Boss302 Less Restriction

#38523 from Joe Aquilante · Rule change · TB 25-12 (2025-12 Fastrack)

In T2 Spec Lines, Ford Mustang Boss 302 (12-13), change Restrictor as follows:
"56mm 63mm flat plate restrictor"
In T2 Spec Lines, Ford Mustang GT 5.0L (11-14), change Restrictor as follows:
"60mm 65mm flat plate restrictor"

Applies to Ford Mustang on this page: Michael Kamalian

2025-12-01 T2 Improving Competitiveness of Gen 5 Camaro SS

#39021 from Van Hunter · Rule change · TB 25-12 (2025-12 Fastrack)

In T2 Spec Lines, Chevrolet Camaro SS/1LE (10-15), change Weight as follows:
"3625 3575"

2025-12-01 AS 1994 Mustang Spec Line Request

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

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

2025-12-01 T2 Adjust T2 Darkhorse R

#39346 from Andrew Aquilante · Rule change · TB 25-12 (2025-12 Fastrack)

In T2 Spec Lines, Ford Mustang Challenge, change as follows:
Car: "Ford Mustang Challenge Darkehorse/Cup Dark Horse R (2024-)
Displacement: "92.220 x 92.7 / 4957 93.0mm x 92.7mm 5038cc"
Weight: "3650 3775 3825"
Restrictor: "2 x 55 mm"
Tires: "295 315"
Notes: "Safety and camera equipment is unrestricted."
"**This car spec line is not eligible for the Runoffs until it has competed in 3 Super Tour events.**

Applies to Ford Mustang on this page: Michael Kamalian

2026-01-01 T2 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."

2026-01-01 T2 Rebalance Blackwing Cadillac T2 for 2026

#39426 from John Heinricy · Rule change · TB 26-01 (2026-01 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), change Weight as follows:
"3800 3750"

Applies to Cadillac CT4 Blackwing on this page: John Heinricy

2026-01-01 T2 C6 LS2 Corvette Parity Request

#39472 from Brian LaCroix · Rule change · TB 26-01 (2026-01 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Restrictor as follows:
"LS2: 67mm 80mm FPR LS3: 56mm FPR"

2026-01-01 T2 T2 Tire Sizing

#39490 from Scotty B White · Rule change · TB 26-01 (2026-01 Fastrack)

In T2 Spec Lines, Dodge Viper SRT10 incl. coupe (03-06), change Weight as follows:
"3675 3650"

Applies to Dodge Viper on this page: Scotty B White

2026-01-01 T2 Rear Spoiler for Mustang GT S550 (15-23)

#39499 from Andrew Aquilante · Rule change · TB 26-01 (2026-01 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (2015-2023), add to Notes the following:
"Ford Track/Performance Package parts permitted. Performance pack aero parts #M-16600-FP and #M-16601-MPP permitted."

Applies to Ford Mustang on this page: Michael Kamalian

2026-01-01 AS Restrictor Plate Change for Gen 2 Ford Coyote Engine

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

2026-01-01 T2 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."

2026-02-01 T2 Request to Add 2014-2017 435i to T2

#38991 from Jimmy Cabrera · Rule change · TB 26-02 (2026-02 Fastrack)

In T2 Spec Lines, classify as follows BMW 435I (2014-2017):

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

2026-02-01 AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request

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

2026-02-01 T2 Consideration for Nissan Z & NISMO Z to Touring 2 Class

#39296 from Greg Nelson · Rule change · TB 26-02 (2026-02 Fastrack)

In T2 Spec Lines, classify Nissan Z incl. Nismo as follows:

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

2026-02-01 T2 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

2026-02-01 T2 Request for Classification of MG6 TCR in T2-TCR Class

#39702 from Vito Jin · Rule change · TB 26-02 (2026-02 Fastrack)

In T2-TCR Spec Lines, classify Link & Co 03 TCR (2019-2025) and MG6 TCR (2019-2022) as follows:
T2-TCR Transmission Power Level Weight(lbs) Notes
Link & Co 03
TCR (2019-
2025)
SEQ 90% 3000 DOT approved tires with maximum section width
of 275. T2-TCR splitter and valance must comply
with 9.1.4.D.3.f. T2-TCR chassis ride height must

2026-03-01 T2 BMW 240i Permitted Tune

#39861 from Harley Kaplan · Rule change · TB 26-03 (2026-03 Fastrack)

In T2 Spec Lines, BMW M235iR (-2016), change Notes as follows:
"Alternative tune permitted."

2026-03-01 AS Re-Organization of AS Spec lines for 2026

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

2026-03-01 SRF SRF3 Spark Plugs

#39899 from Robey Clark · Rule change · TB 26-03 (2026-03 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."