f.
g.
h.
Manufacturers of very low volume numbers of Vehicles will be able to apply for baseline specification registration prior to sale to individual customers.
The conversion of front wheel drive Vehicles to rear wheel drive( or four wheel drive) or of rear wheel drive Vehicles to four wheel drive is permitted subject to the bodyshell construction alterations from the bulkhead rearwards being limited to those detailed in FIA Art. 279.10.3.10 and shown in FIA Appendix J Drawings 279-1 and 279-2. Where rear wheel drive Vehicles are converted to four wheel drive the bodyshell forward of the front bulkhead may be modified solely to allow fitment of front driveshafts.
All materials added must be ferrous and must also be welded to the Chassis / bodywork / unitary construction.
i. Doors and windscreen must remain in the manufacturer ' s original material. j.
k.
Vehicles must be fitted with an engine in compliance with Arts. 4 below and if forced induction is used the turbo / super charger must comply with Art. 4.6 below.
The Vehicle may not be used in Competition until the Competition Car Log Book / Vehicle Passport has been validated by the ASN and returned to the Vehicle owner.
2.4. Category 3: Aluminium or Steel monocoque 2-wheel drive normally aspirated petrol or forced induction diesel production cars of a model first made on or after 1st January 1991.
a.
b.
All external panels including bumpers must be of the original shape and material. Side and rear windows may be replaced by plastic which must be mounted in the original mountings Article 3 applies except for Art. 3.3 – 3.6 and 3.8 below.
Carpets headlining soundproofing and rear seat may be removed front seats to Art. 12.7 below. All other interior trim may be removed except for the door cards / trim which must be retained and fitted in the original location. Steering wheel may be changed. All other controls switches and dash must be retained and fitted in the original location.
2.5. Engine must comply with Art. 4.10 below regarding oil systems and the following;
a.
Original induction system including air filters with a restrictor fitted upstream of the throttle body in compliance with FIA App J Article 256 every Vehicle will have a specified restrictor diameter which may be altered at any time.
b. Only the parts controlling the quantity of fuel delivered may be changed.
c. Standard exhaust manifold and systems must be retained standard stroke maximum over bore + 0.60 mm.
d. Camshaft valves and pistons are free.
2.6. Original transmission must be retained using any optional or homologated ratios. Free differentials may be replaced by mechanical limited slip differentials. Unless fitted as standard active differentials are not permitted.
2.7. Suspension must comply with Arts. 6.1. a – j below inclusive except that parts and systems forbidden by Arts. 6.1( i) and( j) are permitted when fitted as original or optional equipment by the manufacturer
2.8. Wheels and tyres must comply with Art. 7 below inclusive except for the following; 2.9. Wheels must be the original width Art. 7.5 below does not apply and wheel diameter is free. 2.10. Brakes must be of original specification and comply with the following;
a. b.
Friction material free backplates may be removed or deformed ABS may be disconnected c. a hydraulic hand brake is permitted. 2.11. Minimum Vehicle weight will be as per the manufacturer’ s data for that model.
Motorsport UK 2025 National Competition Rules Version 11
Chapter 13 Appendix 16- Special Stage Rally Cars 502