MINI R50 / R53 Build Explorer
Plan a race or rally MINI Cooper S part by part, from the cage to the crew kit, and buy the lot in one basket.
A competition MINI is hundreds of parts from dozens of suppliers. This puts a proven, scrutineer-ready spec in one place.
Every part is one we stock and fits the 2001–2006 R50 and R53. The mandatory safety kit is already included, and the race build is checked against the 2026 MINI CHALLENGE Clubsport regs.
Not sure what you need? Talk to the RRS team.
- Race or rallyPick what the car is for. Rally adds the co-driver's seat, harness, nav kit and stage protection.
- Choose a levelClubman, National or Works sets every system on the car at once. Mix and match after.
- Explore the carSpin it in 3D, look inside with Cockpit view, or use the Side view and tap a number to see that area's parts.
- Add to basketEvery part goes in as its own line. Or tap "Copy list" to send it to us for a quote.
MINI regs check and series costs
2026 MINI CHALLENGE Clubsport Sporting & technical regs, BARC · Cooper S R53 class
- Car: any R53 Cooper S except the GP (7.2.1). 1125kg minimum with the driver (7.16.1), with up to 60kg ballast for power-to-weight (7.16.5).
- Engine: ECU calibrated to the class spec by Celeritas Sports and may be sealed (7.3.1). Airtec intercooler only (7.10.14). Working cat (7.10.5). Ravenol oil only (7.10.15).
- Chassis: original spring and damper mounting points; coilovers with adjustable platforms allowed, damper spec approved before the season (7.11.1–7.11.2). Anti-roll bars free; no extra suspension parts (7.11.3–7.11.4).
- Brakes: free except carbon/ceramic discs and ABS; pads free (7.14.1, 7.14.3).
- Body: compulsory Airtec rear wing (7.8.2). Windows free with ventilation; screens to NCR 7 and 12 (7.9.3, 7.9.10). Window nets allowed (7.9.8).
- Tyres: Davanti Protoura Race 215/45R17 through BMTR, 10 dry tyres a season (7.15.2–7.15.3).
- Also: rain light in the rear screen (7.13.2), front and rear-facing cameras (2.3), transponder (7.19).
- Contacts: championship office 0330 912 1669. Eligibility scrutineer Darryl Drinkwater, 01283 389726.
Stage rally No single rulebook
- Rally: build to Motorsport UK's stage rally regs and your championship's own rules. Cage to NCR Ch.7 App.13, two FIA seats and harnesses, plumbed-in extinguisher plus a hand-held, cut-off, OK/SOS board, warning triangle and first aid kit.
- Made to order for the R53: sump and gearbox guard, lamp pod, rally dampers and hydraulic handbrake lines. Ask us and we'll quote them.
- R50 or R53: both shells share the cage, windows and bushes listed here. Brake lines differ by model and year; pick yours under Brakes on the Spec sheet.
Series parts and fees Bought through the series or its suppliers, not in the basket
From the 2026 MINI CHALLENGE Clubsport sporting and technical regulations (published 25 March 2026). If it isn't in the regs, it isn't permitted. Build to the current regs and check anything unclear with the championship before you buy.
Tap a number on the car to see its parts. The side view is drawn from the 3D car, so it shows your build.