(Last changed - Oct 2022)
For road-going cars from 1950 onwards that are not production slot cars.
- Period: 1950 onwards.
- Body: Covered-wheel cars only.
- Chassis: Any chassis which is not specifically designed by the manufacturer of the body for that body. Effective from the second 2025 round of Kitbash races onwards, this will change to “Any chassis which is not specifically commercially designed for that body.” This includes commercial 3D printed chassis.
- Interior: At least a full shelf with driver head, arms and steering-wheel. Ultra-light/one-piece plastic/lexan interiors are not allowed.
- Motor: FC-130: H&R Racing HRMJR1 14,000 RPM Jack Rabit Motor. FF-050: M/T-SL1 Motor - Slim Can - 14,700 RPM.
- Outer Track Limit (left to right tyre edges): 64 mm.