Appendix K.
4. Permitted Modifications
viiviii. FIA Appendix K to the International Sporting Code: Historic Rally Cars fully compliant with the current FIA Appendix K. World Rally Car evolutions( FIA Appendix K Period KRC) are not permitted. Cars must have been issued with a valid FIA Historic Technical Passport( HTP) and always conform with that document and with the current FIA Appendix K. Vehicles are exempt from the requirement to hold and present at scrutineering an ASN Competition Car Logbook or Vehicle Passport.
4.2. Modifications are only allowed if they were available before:
f. 1 January 2000 for Historic Category 5a & 5b Rally Cars.
5. Engine
5.3. Forced Induction is only permitted if by means of a mechanically driven super-charger, or by an exhaust driven turbocharger if fitted as original equipment by the Vehicle manufacturer.
a.
b.
c.
Vehicles in Category 1, 2 and 3 will be classified as having an engine capacity increase of one third and must be fitted with a restrictor in compliance with App. 16. Art. 4.2. a and Art. 4.6.
Vehicles in Category 4a and, 4b and 5a with an effective engine capacity up to 2000cc will be classified as having an engine capacity increase of 70 % and must be fitted with a 34mm restrictor in compliance with App. 16. Art. 4.6. Or for Vehicles with an effective engine capacity exceeding 2000cc must be fitted with a restrictor of dimensions in compliance with the current FIA Appendix K and will be classified by the corrected capacity as detailed on the FIA Historic Technical Passport( HTP).
Vehicles in Category 5b must be fitted with a restrictor of dimensions in compliance with the current FIA Appendix K and will be classified by the corrected capacity as detailed on the FIA Historic Technical Passport( HTP).
Appendix 20- Medical and Safety Cover
2. Single Venue Stage Rallies
2.1. At each Venue there must be an ASN Licensed Doctor or ASN Registered Licensed Paramedic and an ASN Licensed Rescue Unit.
2.2. It is mandatory that an ASN Licensed Rally Recovery Unit or a Commercially Operated Recovery Unit is placed at or near those stage start locations where a Rescue Unit is positioned.
2.3. The Chief Medical Officer or Chief Paramedic being who must be an ASN Licensed Doctor or ASN Registered Licensed Paramedic, is responsible – in consultation with the Clerk of the Course and the Event Safety Officer – for ensuring that the required level of medical and rescue cover is provided and for:
a. b. c. the detailed organisation of doctors and the planning and deployment within stages and the organisation of ambulance meeting points and d. the notification of hospitals in relation to the stages.
2.4. The Chief Medical Officer Doctor or ASN Registered Paramedic and Safety Officer in liaison with Stage Commanders must be aware of the evacuation routes from the stage and rendezvous points.
2.5. The Chief Medical Officer at the Event following consultation with the Clerk of the Course may appoint a deputy of suitable grade who could take over the Chief Medical Officer’ s duties in an emergency.
Motorsport UK National Competition Rules 2026 Edition 5
Chapter 22 Appendix 13 – Rally( Chapter 13) 833