I.
Vehicles complying with National RGT Homologation issued by an ASN other than Motorsport UK will be issued a Motorsport UK NGT Homologation Document, subject to approval by Motorsport UK Technical Department. These Vehicles must be fitted with:
i. A top speed limiter of 200km / h. ii. Tyres in compliance with Ch. 8 App. 4 Art. 2.
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4. Engine 4.11. For Category 2 Vehicles complying with NGT Homologation, the following engines may be used:
a.
b. naturally aspirated with a maximum of six cylinders, up to 4200cc, utilising their homologated inlet restrictor( maximum 59.7mm)
Forced Induction with a maximum of four cylinders, up to 2000cc, utilising their homologated inlet restrictor( maximum 34mm)
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7. Wheels and Tyres
7.16. For Category 2 Vehicles complying with NGT Homologation, notwithstanding Art. 7.3. b above, the maximum wheel width must not exceed that which is stated in the Homologation document.
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11. Vehicle Weight Limits
11.1 All homologated Vehicles, including NGT Homologation, must conform to the minimum weights stated in their homologation documents.
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12.15. It is mandatory for an operational FIA Impact Data Recorder( IDR) to be fitted to all Vehicles. IDRs must be installed and operated in accordance with the manufacturers’ instructions. Each IDR must be uniquely assigned to, and used only in, the individual Vehicle in which it is installed.
Appendix 17- Technical Regulations- Historic Special Stage Rally Cars
2. The Principles of Historic Special Stage Rally Cars Regulations 2.3. Cars Eligible
a.
Historic Stage Rally Cars are categorised in the following periods. A Vehicle will be dated by the specification presented and not necessarily by the date of build or registration:
vi.
Historic Category 5a Rally Cars: Historic Rally Cars homologated in FIA Groups A and N between 1 January 1991 and 31 December 1999, with an effective engine capacity not exceeding 1600cc. Kit Car evolutions( FIA Appendix K Period KC) are not permitted. Vehicles in Category 5a must comply with their Homologation Forms and Appendix J of the 1999 FIA International Sporting Code, accessible via the FIA Historic Database. vivii. Historic Category 5 5b Rally Cars: Historic Rally Cars homologated in FIA Groups A and N between 1 January 1991 and 31 December 1999 with an effective engine capacity exceeding 1600cc, fully compliant with the current FIA Appendix K periods K and KC. World Rally Car evolutions( FIA Appendix K Period KRC) are not permitted. Vehicles in Category 5 5b must comply with their Homologation forms and must have been issued with a valid FIA Historic Technical Passport( HTP) and must always conform with this document and the current FIA
Motorsport UK National Competition Rules 2026 Edition 5
Chapter 22 Appendix 13 – Rally( Chapter 13) 832