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BoP Lab / Buttonwillow Raceway Park

B-Spec at Buttonwillow Raceway Park

Track map: sectors and speed trap

Track map with timing sectors and speed trap
Shown for: Cal Club 2026 (practice, qualifying, race) · Cal Club 2025 (practice, qualifying, race)
Class · click a class to switch, + to compare alongside
Events

One run is left out as not that car's own laps (far quicker than the car managed in any other session and than anyone else in its class all week; usually a swapped transponder): Thomas Lepper in Cal Club 2026 Grp 1 EP FP HP B-Spec Race 1 (1:42.146; the car's best in any other session was 2:12.311 and the rest of the class's best all week 2:09.353).

PosCarDriverClass#Best lapBest theoretical lapBest qual lapBest race lapBest trap speedBest S1Best S2Best S3
1Mini CooperTrenton KramerB-Spec102:09.353 A-Q22:09.1392:09.353 A-Q22:09.916 A-R2121.5 A-R234.887 A-Q237.301 A-R256.951 A-Q2
2Mini CooperThomas LepperB-Spec212:10.054 B-R22:09.8952:10.736 B-Q12:10.054 B-R2117.3 A-R234.984 B-R237.433 B-Q157.478 B-R2
3Mazda 2Ali NaimiB-Spec142:10.149 B-R22:09.3332:11.287 B-Q22:10.149 B-R2117.2 A-Q1, A-R234.986 B-R237.336 B-R257.011 B-R2
4Toyota YarisJoseph GerschB-Spec382:10.513 B-Q22:09.9902:10.513 B-Q22:10.749 B-R2118.3 A-R235.332 B-Q237.456 B-Q257.202 B-R2
5Mazda 2Tim LinerudB-Spec952:12.574 A-R22:11.8712:15.496 A-Q22:12.574 A-R2113.0 A-R235.895 A-R237.881 A-R258.095 A-R2
6Mazda 2Wendy Epstein AnnisB-Spec1212:17.323 B-Q12:16.4932:17.323 B-Q12:17.406 B-R288.7 B-Q1, B-R236.448 B-Q139.291 B-Q11:00.754 B-Q1

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in; the fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed, marked ">" (with ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

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

By car

CarClassDriversBest lapBest qualBest raceBest trapBest S1Best S2Best S3
Mini CooperB-Spec22:09.353Trenton Kramer2:09.353Trenton Kramer2:09.916Trenton Kramer121.5Trenton Kramer34.887Trenton Kramer37.301Trenton Kramer56.951Trenton Kramer
Mazda 2B-Spec32:10.149Ali Naimi2:11.287Ali Naimi2:10.149Ali Naimi117.2Ali Naimi34.986Ali Naimi37.336Ali Naimi57.011Ali Naimi
Toyota YarisB-Spec12:10.513Joseph Gersch2:10.513Joseph Gersch2:10.749Joseph Gersch118.3Joseph Gersch35.332Joseph Gersch37.456Joseph Gersch57.202Joseph Gersch

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21

B-Spec Toyota Yaris Hatchback (12-18) rear disc brakes

#37530 from B-Spec/C-Spec Committee · Rule change · TB 25-03 (2025-03 Fastrack)

In B-Spec Spec Lines, Toyota Yaris Hatchback (12-18), please add to Brakes (inches) as follows:
"(F) 10.0 (R) 7.9 drum or 10.2 disc"

B-Spec Yaris Speed Sensor

#37536 from B-Spec/C-Spec Committee · Rule change · TB 25-03 (2025-03 Fastrack)

In B-Spec Spec Lines, Toyota Yaris Hatchback (12-18) AND Toyota Yaris Sedan (07-12), add to Notes the following:
"Speed sensor may be disconnected."

B-Spec Set Expiration Date For Fiat 500

#37689 from B-Spec/C-Spec Committee · Rule change · TB 25-03 (2025-03 Fastrack)

In B-Spec Spec Lines, Fiat 500 (12-17), please add to Notes the following language:
"This spec line will expire on 1/1/26 unless an appeal is filed."

B-Spec 2025 BOP Recommendations

#37520 from B-Spec/C-Spec Committee · Rule change · TB 25-04 (2025-04 Fastrack)

In B-SPEC Spec Lines, change as follows:
Honda Fit MT (09-14): "Any Cold Air Intake Package allowed (any manufacturer) Allow Injen Intake SP1512, K&N Intake 69-
1017TTK, or HPS intake 827-102 with a 25lb adder."
Mazda2 (10-14): "Exhaust Header (cat delete) HB.EM 60-404-S-SS, HP-MZD001 allowed with a 50lb adder, or Mazda
Motorsports PN 0000- 06-2410 permitted with no weight adder."
Mini Cooper (R56) MT (07-10): "44 5 FPR (OE Catalyst)"
Mini Cooper (R56) AT (07-10): "46 7 FPR (OE Catalyst)"
Mini Cooper Clubman (R55) (07-10): "44 5 FPR (OE Catalyst)"

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Mini Cooper (R56LCI) MT (11-13): "43 4 FPR"
Mini Cooper (R56LCI) AT (11-13): "45 6 FPR (OE Catalyst)"
Mini Cooper Clubman (R55) (11-15): "42 4 FPR"
Nissan Versa Sedan (12-19): "2490 2450" "Allow Injen intake SP1906"
Nissan Versa Hatchback (12-19): "2490 2450" "Allow Injen intake SP1906"
Toyota Yaris Hatchback (12-18): "2400 2350"
Toyota Yaris Sedan (07-12): "2400 2350"

B-Spec Hyundai/Toyota Factory Rear Disc Models

#37534 from B-Spec/C-Spec Committee · Rule change · TB 25-04 (2025-04 Fastrack)

In B-SPEC Spec Lines, add to Notes the following:
Hyundai Accent Hatchback (12-19): "Vehicles equipped with rear drum brakes subtract 25 lb."
Toyota Yaris Hatchback (12-18): "Vehicles equipped with rear disc brakes add 25 lb."

B-Spec Request to Update the Spec line for Hyundai Accent and Kia Rio

#37880 from Alex Ratcliffe · Rule change · TB 25-04 (2025-04 Fastrack)

In B-SPEC Spec Lines, add to Notes as follows:
Hyundai Accent Hatchback (12-19): "Bilstein B14 kit #4716 → 7490 front shocks verified compatible. Allow BabyFace Fabrication
sump extension #BF-HYU-PAN."
Kia Rio Hatchback (12-19): "Bilstein B14 kit #4716 → 7490 front shocks verified compatible. Allow BabyFace Fabrication sump
extension #BF-HYU-PAN."

B-Spec Correct Hyundai/Kia Model Years

#37943 from B-Spec/C-Spec Committee · Rule change · TB 25-05 (2025-05 Fastrack)

In B-Spec Spec Lines, correct model years as follows:
"Hyundai Accent Hatchback (12-19 7)"
"Kia Rio Hatchback (12-19 5)"

B-Spec 07-08 Honda Fit MT Requests

#37974 from Caleb Patrie · Rule change · TB 25-05 (2025-05 Fastrack)

In B-SPEC Spec Lines, Honda Fit MT (07-08), change as follows:
Minimum weight: "2400 2450"
Notes: "OEM exhaust manifold required. Primary catalyst may be removed."

B-Spec Add B14 Kit Part # to Honda Fit (07-08) Spec line

#38010 from B-Spec/C-Spec Committee · Rule change · TB 25-05 (2025-05 Fastrack)

In B-SPEC Spec Lines, Honda Fit (07-08) MT, add to Notes the following:
"Bilstein B14 kit 4717 → 2401 verified compatible."
In B-SPEC Spec Lines, Honda Fit (07-08) AT, add to Notes the following:
"Bilstein B14 kit 4717 → 2401 verified compatible."

B-Spec Add Sedan spec lines for Hyundai & Kia

#37537 from B-Spec/C-Spec Committee · Rule change · TB 25-06 (2025-06 Fastrack)

In B-SPEC Spec Lines, classify Hyundai Accent Sedan (12-17) as follows:
B-SPEC Bore x
Stroke(mm)
Displacement
(cc)
Gear Ratios Final

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

B-Spec Shifter Bushing Questions.

#38048 from Eric Yagel · Rule change · TB 25-06 (2025-06 Fastrack)

In B-SPEC Spec Lines, Honda Fit MT (09-14) add to Notes the following:
"Allow Acuity Shifter Base Bushing Kit 1954."

B-Spec Add Weapon R Intake to Honda Fit MT (09-14) Spec Line

#38306 from B-Spec/C-Spec Committee · Rule change · TB 25-06 (2025-06 Fastrack)

In B-SPEC Spec Lines, Honda Fit AT (09-14), add to Notes the following:
"Weapon R Intake 301-166-301"

B-Spec Update Rule 46

#38307 from B-Spec/C-Spec Committee · Rule change · TB 25-06 (2025-06 Fastrack)

In GCR, Section 9.1.10.E.46. change as follows:
"Aftermarket shift knobs are allowed and shift levers mat y be bent or extended, however the shift linkage/cables must remain
stock and may not be modified in any way. Approved aftermarket shift linkage bushings are permitted."

B-Spec Disabling 2 Pedal Shutdown

#38354 from Eric Yagel · Rule change · TB 25-08 (2025-08 Fastrack)

In B-Spec Spec Lines, Honda Fit MT (09-14), add to Notes the following:
"Two pedal shutdown may be disabled by cutting/de-pinning pin 42 (BKSW) at the main ECU connector in the engine bay."

B-Spec Update Honda Fit MT (07-08) Intake Allowance

#38530 from B-Spec/C-Spec Committee · Rule change · TB 25-08 (2025-08 Fastrack)

In B-Spec Spec Lines, Honda Fit MT (07-08), change Notes as follows:
"Bilstein B14 kit 47172401 verified compatible. Allow rear sway bar Progress #62.1060. Any Cold Air Intake Package allowed (any
manufacturer). Allow Injen Intake SP1511. This configuration is not currently eligible for Runoffs competition. This car must
compete in three (3) separate Super Tour weekends so that performance data can be collected. In addition to SCCA data box,
OBDII data collected via an AIM or similar device must be submitted. OEM exhaust manifold required. Primary catalyst may be
removed."

B-Spec Remove Asterisk from Rule 9

#38768 from B-Spec/C-Spec Committee · Rule change · TB 25-09 (2025-09 Fastrack)

In GCR, Section 9.1.10.D.9, change as follows:
"* If car is used on public roads, these items should be replaced, reactivated, rearmed, etc. when not in competition."

B-Spec Alternate Shift Cable Bushings and Rear Spring Seats

#38472 from Caleb Patrie · Rule change · TB 25-09 (2025-09 Fastrack)

In B-Spec Spec Lines, Honda Fit MT (07-08), add to Notes the following:
"(Effective 11/1/2025) Allow Torque Solution Shifter Cable Bushing kit TS-SCB-506."

B-Spec Fiesta BOP Adjustment

#38847 from B-Spec/C-Spec Committee · Rule change · TB 25-09 (2025-09 Fastrack)

In B-Spec Spec Lines, Ford Fiesta Hatchback (11-19), change as follows:
Weight (lbs): "(Effective 11/1/2025) 2470 2525"
Restrictor (mm) & Type: "(Effective 11/1/2025)39 FPR 40 FPR"
In B-Spec Spec Lines, Ford Fiesta Sedan (11-19), change as follows:
Weight (lbs): "(Effective 11/1/2025) 2470 2525"
Restrictor (mm) & Type: "(Effective 11/1/2025)38 FPR 39 FPR"

B-Spec Request to Remove Rear Shock From Spec Line Hyundai Accents/Kia

#39017 from Alex Ratcliffe · Rule change · TB 25-11 (2025-11 Fastrack)

In B-Spec Spec Lines, Hyundai Accent Sedan (12-17), change Notes as follows:
"Bilstein B8 shock 33- 187112 approved for use in rear suspension."
In B-Spec Spec Lines, Kia Rio Sedan (12-17), change Notes as follows:
"Bilstein B8 shock 33- 187112 approved for use in rear suspension."

B-Spec Update Honda Fit MT (07-08) Runoffs Eligibility

#39060 from B-Spec/C-Spec Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In B-Spec Spec Lines, Honda Fit MT (07-08), change Notes as follows:
"Bilstein B14 kit 47172401 verified compatible. Allow rear sway bar Progress #62.1060. Allow Injen Intake SP1511 OEM exhaust
manifold required. Primary catalyst may be removed. This configuration is not currently eligible for Runoffs competition. This car
must compete in three (3) separate Super Tour weekends so that performance data can be collected. In addition to SCCA data
box, OBDII data collected via an AIM or similar device must be submitted. (Effective 11/1/2025) Allow Torque Solution Shifter
Cable Bushing kit TS-SCB-506."

B-Spec Notes section cleanup

#39062 from B-Spec/C-Spec Committee · Rule change · TB 26-01 (2026-01 Fastrack)

In B-Spec Spec Lines, Chevrolet Sonic Sedan MT (12-19), change Notes as follows:
"GM suspension kit #23123679 permitted. Bilstein B14 kit #47-171725 verifed compatible. Allow rear sway bar ZZ Performance
#ZZ-SNCRSB. Allow Aluminum Radiator #ZZP-ZZ013. Allow Babyface Fabrication brake caliper piston SNC-SS. Approved parts: ZZ
Performance rear sway bar ZZ-SNCRSB, ZZ Performance radiator ZZP-ZZ013, Babyface Fabrication brake caliper piston SNC-SS.
Bilstein B14 kit 47-171725 verified compatible."
In B-Spec Spec Lines, Chevrolet Sonic Sedan AT (12-19), change Notes as follows:
"GM suspension kit #23123679 permitted. Bilstein B14 kit #47-171725 verifed compatible. Allow rear sway bar ZZ Performance
#ZZ-SNCRSB. For automatic allow Setrab 1-series Part No. FP119M221. Allow Aluminum Radiator #ZZP-ZZ013. Allow Babyface

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Fabrication brake caliper piston SNC-SS. Approved parts: ZZ Performance rear sway bar ZZ-SNCRSB, ZZ Performance radiator ZZP-
ZZ013, Babyface Fabrication brake caliper piston SNC-SS, Setrab transmission cooler 50-119-7612. Bilstein B14 kit 47-171725
verified compatible. This configuration is not currently eligible for Runoffs competition. This car must compete in three separate
Majors/Super Tour events so performance data can be collected. In addition to an SCCA data box, OBDII data collected via an
AIM or similar device must be submitted."
In B-Spec Spec Lines, Chevrolet Sonic Hatchback MT (12-19), change Notes as follows:
"GM suspension kit #23123679 permitted. Bilstein B14 kit #47-171725 verifed compatible. Allow rear sway bar ZZ Performance
#ZZ-SNCRSB. Allow Aluminum Radiator #ZZP-ZZ013. Allow Babyface Fabrication brake caliper piston SNC-SS. Approved parts: ZZ
Performance rear sway bar ZZ-SNCRSB, ZZ Performance radiator ZZP-ZZ013, Babyface Fabrication brake caliper piston SNC-
SS. World Challenge suspension kit permitted but no longer available. Bilstein B14 kit 47-171725 verified compatible."
In B-Spec Spec Lines, Chevrolet Sonic Hatchback AT (12-19), change Notes as follows:
"GM suspension kit #23123679 permitted. Bilstein B14 kit #47-171725 verifed compatible. Allow rear sway bar ZZ Performance
#ZZ-SNCRSB. For automatic allow Setrab 1-series Part No. FP119M221. Allow Aluminum Radiator #ZZP-ZZ013. Allow Babyface
Fabrication brake caliper piston SNC-SS. Approved parts: ZZ Performance rear sway bar ZZ-SNCRSB, ZZ Performance radiator ZZP-
ZZ013, Babyface Fabrication brake caliper piston SNC-SS, Setrab transmission cooler 50-119-7612. Bilstein B14 kit #47-171725
verified compatible. This configuration is not currently eligible for Runoffs competition. This car must compete in three separate
Majors/Super Tour events so performance data can be collected. In addition to an SCCA data box, OBDII data collected via an
AIM or similar device must be submitted."
In B-Spec Lines, Ford Fiesta Hatchback (11-19), change Notes as follows:
"Suspension kit #M-FR3-FAEB allowed. Rear axle bushing #000-04-2203-RR allowed. Allow rear torque bar Corksport #Mz2-3-
070. Cold air intake K&N 69-3530TS is allowed. Powerflex PFR19-1511BX2 rear suspension bushing allowed. Eibach rear sway bar
#35143.312 o r35143.320 is allowed. Mazda front hub D651-33-06 and rear hub D651-26-15XE allowed. Approved parts: Eibach
rear sway bar 35143.312, Corksport rear torque bar MZ2-3-070, K&N intake 69-3530TS, Powerflex rear suspension bushing
PFR19-1511BX2, Mazda front hub D651-33-06, Mazda rear hub D651-26-15XE."
In B-Spec Spec Lines, Ford Fiesta Sedan (11-19), change Notes as follows:
"Suspension kit #M-FR3-FAEB allowed. Rear axle bushing #000-04-2203-RR allowed. Allow rear torque bar Corksport #Mz2-3-
070. Cold air intake K&N 69-3530TS is allowed. Powerflex PFR19-1511BX2 rear suspension bushing allowed. Eibach rear sway bar
#35143.312 o r35143.320 is allowed. Mazda front hub D651-33-06 and rear hub D651-26-15XE allowed. Approved parts: Eibach
rear sway bar 35143.312, Corksport rear torque bar MZ2-3-070, K&N intake 69-3530TS, Powerflex rear suspension bushing
PFR19-1511BX2, Mazda front hub D651-33-06, Mazda rear hub D651-26-15XE."
In B-Spec Spec Lines, Honda Fit MT (07-08), change Notes as follows:
"Bilstein B14 kit 47172401 verified compatible. Allow rear sway bar Progress #62.1060. Allow Injen Intake SP1511 OEM exhaust
manifold required. Primary catalyst may be removed. Allow Torque Solution Shifter Cable Bushing kit TS-SCB-506. Approved
parts: Progress rear sway bar 62.1060, Injen intake SP1511, Torque Solution shifter cable bushings TS-SCB-506. Bilstein B14 kit
47172401 verified compatible. OEM exhaust manifold required. Primary catalyst may be removed."
In B-Spec Spec Lines, Honda Fit AT (07-08), change Notes as follows:
"Bilstein B14 kit 47172401 verified compatible. Any aftermarket header allowed. Allow rear sway bar Progress # 62.1060. Any
Cold Air Intake Package allowed (any manufacturer). Approved parts: Progress rear sway bar 62.1060, Injen intake SP1511,
Setrab transmission cooler 50-119-7612, any aftermarket header. Bilstein B14 kit 47172401 verified compatible."
In B-Spec Spec Lines, Honda Fit MT (09-14), change Notes as follows:
"Allow damper and spring set 51600F23SA100, Damper FR LH 51605F23SA100, Damper FR RH 51606F23SA100, Damper RR
52610F23SA100, Spring adjust asy RR 52691F23SA010. Seat upper FR spring 51688F23SA200, 51402FC4YA00 front helper spring
and 51403FC4YA00 front spacer permitted. Front Damper Mount P/N 51920-F23S-A30 is allowed. Allow rear sway bar Progress
# 62.1061 Allow Injen Intake SP1512, K&N Intake 69-1017TTK, or HPS intake 827-102 with a 25lb adder. Allow Acuity Shifter
Base Bushing Kit 1954 Two pedal shutdown may be disabled by cutting/de-pinning pin 42 (BKSW) at the main ECU connector in
the engine bay. Approved parts: Progress rear sway bar #62.1061, Injen Intake SP1512, K&N Intake 69-1017TTK, or Weapon R
Intake 301-166-301, Acuity shifter bushing kit 1954. World Challenge suspension kit permitted but no longer available. Two pedal
shutdown may be disabled by cutting/de-pinning pin 42 (BKSW) at the main ECU connector in the engine bay."
In B-Spec Spec Lines, Honda Fit AT (09-14), change Notes as follows:
"Allow damper and spring set 51600F23SA100, Damper FR LH 51605F23SA100, Damper FR RH 51606F23SA100, Damper RR
52610F23SA100, Spring adjust asy RR 52691F23SA010. Seat upper FR spring 51688F23SA200, 51402FC4YA00 front helper spring
and 51403FC4YA00 front spacer permitted. Front Damper Mount P/N 51920-F23S-A30 is allowed. Allow rear sway bar Progress
# 62.1061. Allow Setrab 50-119-7612 transmission cooler in addition to OEM. Any aftermarket exhaust/header allowed. Any
Cold Air Intake Package allowed (any manufacturer). Weapon R Intake 301-166-301. Approved parts: Progress rear sway bar
62.1061, Injen Intake SP1512, any aftermarket header, Setrab transmission cooler 50-119-7612. Two pedal shutdown may be
disabled by cutting/de-pinning pin 42 (BKSW) at the main ECU connector in the engine bay."
In B-Spec Spec Lines, Honda Fit MT (15-19), change Notes as follows:
"Allow damper FR LH 51605F23SA81, Damper FR RH FR RH 51606F23SA81, Damper RR 52610F23SA80, Spring adjust assy RR
52691F23SA80, Camber Adjuster Comp, Damper 51920F23SA82. Allow rear sway bar Progress 62.1063. Approved parts: Progress
rear sway bar 62.1063."
In B-Spec Spec Lines, Honda Fit CVT (15-19), change Notes as follows:
"Allow damper FR LH 51605F23SA81, Damper FR RH FR RH 51606F23SA81, Damper RR 52610F23SA80, Spring adjust assy RR
52691F23SA80, Camber Adjuster Comp, Damper 51920F23SA82. Allow rear sway bar Progress 62.1063. Allow Setrab 50-119-
7612 transmission cooler in addition to OEM. Approved parts: Progress rear sway bar 62.1063, Setrab transmission cooler 50-
119-7612. This configuration is not currently eligible for Runoffs competition. This car must compete in three separate
Majors/Super Tour events so performance data can be collected. In addition to an SCCA data box, OBDII data collected via an
AIM or similar device must be submitted."
In B-Spec Spec Lines, Hyundai Accent Hatchback (12-17), change Notes as follows:
"Allow AKSJ03-10-001 Damper Frt Assembly; AKSJ03-20-001 Damper-ASTRear; KSJ03-20-003 Rear Upper Spring Perch Delrin;
AKSJ03-60-001 Sump Pan Extension. Allow rear torque bar Evilla Motorsports #KR-B1. Bilstein B8 shock 33- 187112 approved for
use in rear suspension. Bilstein B14 kit #47167490 front shocks verified compatible. Allow BabyFace Fabrication sump extension
#BF-HYU-PAN Vehicles equipped with rear drum brakes subtract 25 lb. Approved parts: Evilla Motorsports rear torque bar KR-B1,
BabyFace Fabrication sump extension BF-HYU-PAN. Vehicles equipped with rear drum brakes subtract 25 lbs."
In B-Spec Spec Lines, Hyundai Accent Sedan (12-17), change Notes as follows:
"Allow AKSJ03-10-001 Damper Frt Assembly; AKSJ03-20-001 Damper-AST-Rear; KSJ03-20- 003 Rear Upper Spring Perch Delrin;
AKSJ03-60-001 Sump Pan Extension. Allow rear torque bar Evilla Motorsports #KR-B1. Bilstein B8 shock 33-187112 approved for
use in rear suspension. Approved parts: Evilla Motorsports rear torque bar KR-B1, BabyFace Fabrication sump extension BF-HYU-
PAN. Vehicles equipped with rear drum brakes subtract 25 lbs."
In B-Spec Spec Lines, Kia Rio Hatchback (12-15), change Notes as follows:
"Allow AKSJ03-10-001 Damper Frt Assembly; AKSJ03-20-001 Damper-AST-Rear; KSJ03-20- 003 Rear Upper Spring Perch Delrin;
AKSJ03-60-001 Sump Pan Extension. Allow rear torque bar Evilla Motorsports #KR-B1. Bilstein B14 kit #47167490 front shocks
verified compatible. Allow BabyFace Fabrication sump extension #BF-HYU-PAN Bilstein B8 shock 33-187112 approved for use in
rear suspension. Approved parts: Evilla Motorsports rear torque bar KR-B1, BabyFace Fabrication sump extension BF-HYU-PAN.
World Challenge suspension kit permitted but no longer available."
In B-Spec Spec Lines, Kia Rio Sedan (12-17), change Notes as follows:
"Allow AKSJ03-10-001 Damper Frt Assembly; AKSJ03-20-001 Damper-AST-Rear; KSJ03-20- 003 Rear Upper Spring Perch Delrin;
AKSJ03-60-001 Sump Pan Extension. Allow rear torque bar Evilla Motorsports #KR-B1. Bilstein B8 shock 33-187112 approved for
use in rear suspension. Approved parts: Evilla Motorsports rear torque bar #KR-B1, BabyFace Fabrication sump extension BF-HYU-
PAN."
In B-Spec Spec Lines, Mazda2 (10-14), change Notes as follows:
"Rear sway bar 0000-04-2203-RR or 0000-04-2312, Allow rear torque bar Corksport #Mz2- 3-070. Cold air intake Corksport Mz2-
6-117-31100 and air duct Mz2-6-120-10 are allowed. Exhaust Header (cat delete) HB.EM 60-404-S-SS, HP-MZD001, allowed with
a 50lb adder or Mazda Motorsports PN 0000-06-2410 with no weight adder permitted. Powerflex PFR19- 1511BX2 rear
suspension bushings allowed. Allow Mazda part number 0000-01-2501-CR Radiator. Allow Mazda undertray part number DO8C-
56-110A, DO8C-56-311, DO7A-56-321. Approved parts: Mazda Motorsports rear sway bar 0000-04-2203-RR, Eibach/Mazda
Motorsports rear sway bar 35143.312/0000-04-2312, Corksport rear torque bar #MZ2- 3-070, Corksport intake MZ2-6-117-
31100, Corksport air duct MZ2-6-120-10, Powerflex PFR19-1511BX2 rear suspension bushings, Mazda Motorsports radiator
0000-01-2501-CR, Mazda Motorsports header 0000-06-2410, Mazda undertray/side shields DO8C-56-110A, DO8C-56-311, DO7A-
56-321."
In B-Spec Spec Lines, Mini Cooper Hatchback (R50) MT (02-06), change Notes as follows:
"Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
Allow rear sway bar Progress #62.0210. Approved parts: Progress rear sway bar 62.0210, Mevotech leteral link CMK100003. Ride
height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches."
In B-Spec Spec Lines, Mini Cooper Hatchback (R50) CVT (02-06), change Notes as follows:
"Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
Allow rear sway bar Progress #62.0210.CVT equipped cars allow Setrab 50-119-7612 transmission cooler in addition to
OEM. Approved parts: Progress rear sway bar 62.0210, Mevotech leteral link CMK100003, Setrab transmission cooler 50-119-
7612. Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5
inches."
In B-Spec Spec Lines, Mini Cooper (R56) MT (07-10), change Notes as follows:
"Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.
Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. OBX header part #10-
2101-2S permitted. Approved parts: Progress rear sway bar 62.0210, OBX header 10-2101-2S. Ride height measured from the
metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
In B-Spec Spec Lines, Mini Cooper (R56) AT (07-10), change Notes as follows:
"Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1
125.Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5
inches. Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. OBX header
part #10-2101-2S permitted. Automatic equipped cars only allow Setrab 50-119-7612 transmission cooler in addition to
OEM. Approved parts: Progress rear sway bar 62.0210, Setrab transmission cooler 50-119-7612. Ride height measured from the
metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches. This configuration is not currently
eligible for Runoffs competition. This car must compete in three separate Majors/Super Tour events so performance data can be
collected. In addition to an SCCA data box, OBDII data collected via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Mini Cooper Clubman (R55) (07-10), change Notes as follows:
"Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.
Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. OBX header part #10-
2101-2S permitted. Approved parts: Progress rear sway bar 62.0210, OBX header 10-2101-2S. Ride height measured from the
metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
In B-Spec Spec Lines, Mini Cooper (R56LCI) MT (11-13), change Notes as follows:
"Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.
Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. Approved parts:
Progress rear sway bar 62.0210. Ride height measured from the metal underneath the bottom of the plastic door rocker molding
shall be no less than 5 inches."
In B-Spec Spec Lines, Mini Cooper (R56LCI) AT (11-13), change Notes as follows:
"Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.
Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. OBX header part #10-
2101-2S permitted with 41mm FPR. Automatic equipped cars only allow Setrab 50- 119-7612 transmission cooler in addition to
OEM. Approved parts: Progress rear sway bar 62.0210, Setrab transmission cooler 50-119-7612. Ride height measured from the
metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches. This configuration is not currently
eligible for Runoffs competition. This car must compete in three separate Majors/Super Tour events so performance data can be
collected. In addition to an SCCA data box, OBDII data collected via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Mini Cooper Clubman (R55) (11-15), change Notes as follows:
"Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.
Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. Approved parts:
Progress rear sway bar 62.0210. Ride height measured from the metal underneath the bottom of the plastic door rocker molding
shall be no less than 5 inches."
In B-Spec Spec Lines, Mini Cooper Coupe (R58) (12-15), change Notes as follows:
"Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.
Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. Approved parts:
Progress rear sway bar 62.0210. Ride height measured from the metal underneath the bottom of the plastic door rocker molding
shall be no less than 5 inches."
In B-Spec Spec Lines, Nissan Versa Sedan (2012-2019), change Notes as follows:
"Hardrace HR-Q0146 19mm rear sway bar permitted. Allow Injen intake SP1906. Approved parts: Hardrace rear sway bar HR-
Q0146, Injen intake SP1906."
In B-Spec Spec Lines, Nissan Versa Hatchback (2012-2019), change Notes as follows:
"Hardrace HR-Q0146 19mm rear sway bar permitted. Allow Injen intake SP1906. Approved parts: Hardrace rear sway bar HR-
Q0146, Injen intake SP1906."
In B-Spec Spec Lines, Nissan Versa (2020-), change Notes as follows:
"This configuration is not currently eligible for Runoffs competition. This car must compete in three (3) separate Super Tour
weekends so that performance data can be collected. In addition to SCCA data box, OBDII data collected via an AIM or similar
device must be submitted. This configuration is not currently eligible for Runoffs competition. This car must compete in three
separate Majors/Super Tour events so performance data can be collected. In addition to an SCCA data box, OBDII data collected
via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Toyota/Scion IA Sedan (16-20), change Notes as follows:
"This configuration is not currently eligible for Runoffs competition. This car must compete in three (3) separate Super Tour
weekends so that performance data can be collected. In addition to SCCA data box, OBDII data collected via an AIM or similar
device must be submitted. Allow ST Suspension Kit 1327502. Approved parts: ST suspension kit 1327502. This configuration is not
currently eligible for Runoffs competition. This car must compete in three separate Majors/Super Tour events so performance
data can be collected. In addition to an SCCA data box, OBDII data collected via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Toyota Yaris Hatchback (07-11), change Notes as follows:
"Speed sensor may be disconnected. Cold air intake K&N 69-8612TFK is allowed. Rear Swaybar PTR11-52071 is allowed.
Approved parts: TRD rear sway bar PTR11-52071, K&N intake 69-8612TFK. Speed sensor may be disconnected."
In B-Spec Spec Lines, Toyota Yaris Hatchback (12-18), change Notes as follows:
"Rear Swaybar PTR11-52071 is allowed. Cold air intake K&N 69-8612TFK is allowed. Speed sensor may be disconnected. Vehicles
equipped with rear disc brakes add 25 lb. Approved parts: TRD rear sway bar PTR11-52071, K&N intake 69-8612TFK. Speed
sensor may be disconnected. Vehicles equipped with rear disc brakes add 25 lbs."
In B-Spec Spec Lines, Toyota Yaris Sedan (07-12), change Notes as follows:
"Rear Swaybar PTR11-52071 is allowed. Cold air intake K&N 69-8612TFK is allowed. Speed sensor may be disconnected.
Approved parts: TRD rear sway bar PTR11-52071, K&N intake 69-8612TFK. Speed sensor may be disconnected."

Applies to Mini Cooper on this page: Trenton Kramer, Thomas Lepper

Applies to Toyota Yaris on this page: Joseph Gersch

B-Spec 2026 BOP Recommendations

#39475 from B-Spec/C-Spec Committee · Rule change · TB 26-01 (2026-01 Fastrack)

In B-Spec Spec Lines, change as follows:
Chevrolet Sonic Sedan AT (12-19):
Restrictor (mm) & Type: "35 FPR"
Chevrolet Sonic Hatchback AT (12-19):
Restrictor (mm) & Type: "35 FPR"
Honda Fit MT (09-14):
Weight (lbs): "2525 2550"
Honda Fit CVT (15-19):

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Restrictor (mm) & Type: "33 FPR"
Mini Cooper Hatchback (R50) MT (02-06):
Weight (lbs): "2545 2525"
Mini Cooper (R56) MT (07-10):
Restrictor (mm) & Type: "FPR 45 47 OE Catalyst"
Mini Cooper (R56) AT (07-10):
Restrictor (mm) & Type: "47 FPR (OE Catalyst) 42 FPR (Header)"
Mini Cooper Clubman (R55) (07-10):
Restrictor (mm) & Type: "FPR 45 47 OE Catalyst"
Mini Cooper (R56LCI) MT (11-13):
Restrictor (mm) & Type: "FPR 44 46"
Mini Cooper (R56LCI) AT (11-13):
Restrictor (mm) & Type: "46 FPR (OE Catalyst) 41 FPR (Header)"
Mini Cooper Clubman (R55) (11-15):
Restrictor (mm) & Type: "FPR 44 46"
Nissan Versa Sedan (2012-2019):
Min weight: "2450 2425"
Nissan Versa Hatchback (2012-2019):
Min weight: "2450 2425"
Nissan Versa (2020-):
Restrictor (mm) & Type: "38 FPR"
Toyota/Scion IA Sedan (16-20):
Restrictor (mm) & Type: "38 FPR"

B-Spec Expire NLA Mazda 2 Headers

#39582 from B-Spec/C-Spec Committee · Rule change · TB 26-01 (2026-01 Fastrack)

In B-Spec Spec Lines, Mazda2 (10-14), change Notes as follows:
"Exhaust Header (cat delete) HB.EM 60-404-S-SS, HP-MZD001, allowed with a 50lb adder or Mazda Motorsports PN 0000-06-
2410 with no weight adder permitted.”

B-Spec C-Spec Rear Sway Bars

#39652 from B-Spec/C-Spec Committee · Rule change · TB 26-02 (2026-02 Fastrack)

In C-Spec Spec Lines, change Notes as follows:
Chevrolet Cruze (2010-16):
"Allow BC Racing Q-06-BR suspension kit or RedShift Q-06-CSPEC. Allow Babyface Fabrication brake caliper piston SNC-
SS. Approved parts: BC Racing Q-06-BR or RedShift Q-06-CSPEC suspension kit, Babyface Fabrication brake caliper piston SNC-
SS, ZZ Performance ZZ-SNCRSB or Whiteline BHR93 rear sway bar.
Dodge Dart (2014-16):
"Allow BC Racing or RedShift Z-06-CSPEC kit. Approved parts: BC Racing Z-06-BR or RedShift Z-06-CSPEC kit, Progress rear sway
bar 62.0606."

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Ford Focus Hatchback/Sedan (2011-18):
"Allow BC Racing E-21-BR or RedShift E-21-CSPEC kit. Allow Corksport Axl-3-318-Black adjustable rear camber arms. Approved
parts: BC Racing E-21-BR or RedShift E-21-CSPEC suspension kit, Corksport Axl-3-318-Black adjustable rear camber
arms, Corksport Axl-3-071-12, Eibach 35134.312, or Whiteline BMR78XZ rear sway bar."
Honda Civic Coupe/Sedan (2012-15):
"Allow BC Racing A-58-BR or RedShift A-18-CSPEC kit. Approved parts: BC Racing A-58-BR or RedShift A-18-CSPEC suspension kit,
Progress 62.1026 or Megan Racing MRS-HA-0791 rear sway bar."
Honda Civic Coupe/Sedan (2006-11):
"Allow BC Racing A-18-BR or RedShift A-58-CSPEC kit. Approved parts: BC Racing A-58-BR or RedShift A-18-CSPEC suspension kit,
Progress 62.1026 or Megan Racing MRS-HA-0791 rear sway bar."
Mazda3i SKYACTIV (2012-13):
"Allow BC Racing N-03-BR or RedShift N-03-CSPEC kit. Allow Corksport Axl-3-318-Black adjustable rear camber arms. Approved
parts: BC Racing N-03-BR or RedShift N-03-CSPEC suspension kit, Corksport Axl-3-318-Black adjustable rear camber
arms, Corksport Axl-3-071-12, Eibach 35134.312, or Whiteline BMR78XZ rear sway bar."
Mazda 3i MZR (2010-13):
"Allow BC Racing N-03-BR or RedShift N-03-CSPEC kit. Allow Corksport Axl-3-318-Black adjustable rear camber arms. Approved
parts: BC Racing N-03-BR or RedShift N-03-CSPEC suspension kit, Corksport Axl-3-318-Black adjustable rear camber
arms, Corksport Axl-3-071-12, Eibach 35134.312, or Whiteline BMR78XZ rear sway bar."
Mazda 3i (2004-09):
"Allow Corksport Axl-3-318-Black adjustable rear camber arms. Approved parts: BC Racing N-03-BR or RedShift N-03-CSPEC
suspension kit, Corksport Axl-3-318-Black adjustable rear camber arms, Corksport Axl-3-071-12, Eibach 35134.312, or Whiteline
BMR78XZ rear sway bar."
Toyota Corolla (2007-12):
"Allow BC Racing C-02-BR or RedShift C-02-CSPEC kit. Approved parts: BC Racing C-02-BR or RedShift C-02-CSPEC suspension kit,
TRD PTR11-12080 or Megan Racing MRS-TY-1710 rear sway bar."
Toyota Corolla (2013-18):
"Allow BC Racing C-02-BR or RedShift C-02-CSPEC kit. Approved parts: BC Racing C-02-BR or RedShift C-02-CSPEC suspension
kit, TRD PTR11-12080 or Megan Racing MRS-TY-1710 rear sway bar."

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