CATERHAM GRADUATES RACING CLUB JOINS BRSCC FROM 2026
The British Racing & Sports Car Club (BRSCC) is delighted to confirm that the Caterham Graduates Racing Club (CGRC)… Read More
CATERHAM GRADUATES RACING CLUB
Some of the fastest, most competitive and exciting one-make Caterham racing you'll find in the UK!
About the CATERHAM GRADUATES RACING CLUB
The Caterham Graduates Racing Club (CGRC) has been delivering some of the UK’s best grassroots Caterham racing since 1998. Built on the philosophy that it should be the driver — not the car — that makes the difference, the club focuses on fair, close competition in a friendly, sociable paddock environment.
With a strong emphasis on cost control, driver development, and community spirit, CGRC has become one of the most respected single-make racing clubs in British motorsport. Many members race the same car season after season, and upgrades between classes are entirely optional — helping to ensure long-term affordability and accessibility.
RACING CLASSES
The CGRC operates two main Caterham-based classes, offering a natural progression path for drivers and a broad range of competitive machinery:
Sigma 135
Based around the Caterham Motorsport 270R specification, Sigma 135 features cars with the 1600cc Ford Sigma TiVCT engine producing approximately 135bhp. Tyres are Toyo 185/60 R13 R888R, with optional upgrades including wide-track suspension, quick steering rack, race dampers/springs, and brake bias valve.
This class also includes eligible models upgraded from the Caterham Academy, Roadsport, and Modified Roadsport.
Sigma 150
The Sigma 150 class features Caterham 310R-spec cars, as well as former Sigmax cars. These cars run the 1600cc Ford Sigma TiVCT engine with approximately 150bhp, wide track suspension, limited slip differentials, and run on Toyo 185/60 R13 R888R tyres.This class structure allows for highly competitive racing across a range of budgets, with an emphasis on driving skill, progression, and maintaining performance parity.
The CGRC is proud to welcome new drivers each season and works hard to maintain its reputation as a driver-focused, community-led championship. Whether you’re a Caterham Academy graduate, a seasoned racer, or someone looking to get back on track, the CGRC offers a competitive and supportive environment to enjoy your racing.
Get Started
| Contact Name | Phone Number | |
|---|---|---|
| John Benfield - Competitions | Send Email | |
| Matthew Willoughby - Chairman | Send Email | |
| Darren Houldcroft - Promotions | Send Email | |
| Tom Power - Membership | Send Email |
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| DESCRIPTION | DETAILS |
|---|---|
| Sigma 135 | Based around the Caterham Motorsport 270R specification, Sigma 135 features cars with the 1600cc Ford Sigma TiVCT engine producing approximately 135bhp |
| Sigma 150 | The Sigma 150 class features Caterham 310R-spec cars, as well as former Sigmax cars. These cars run the 1600cc Ford Sigma TiVCT engine with approximately 150bhp |
you can scroll left to right or best viewed in landscape
| DOCUMENT TITLE | UPLOAD DATE | |
|---|---|---|
| 2025 Sporting & Technical Regulations | 19/03/2025 | View Document |
| 2025 Driving Standards Guidance | 19/03/2025 | View Document |
| 2025 Decals (Full Guide) | 19/03/2025 | View Document |
| 2025 Decals (Quick Reference) | 19/03/2025 | View Document |
