Pre-1964 500cc Grand Prix racing motorcycles either original or replica but in a very period original specification. Original sized wheels, exhaust systems, carburettors and so on are required plus the appearance of the bike must be very much in keeping with bikes raced in the period. All riders must use control Avon tyres.
Archive: Championship Season: 2023
Pre-1964 351cc–500cc racing motorcycles either original or replica, to original specification. Subject to a handicap system, in-period modifications are allowed, for example: wheel size, exhausts and carburettors, competitors may use a tyre manufacturer of their choice.
Pre 1964 350cc racing motorcycles either original or replica, to original specification. Subject to a handicap system, in-period modifications are allowed, for example: wheel size, exhausts and carburettors, competitors must use Avon Tyres.
Regulations common with the 1950s spec class at the Goodwood Revival. Open to original pre-1954 Group 1 bikes and pre 1955 Group 2 bikes.
Riders aged over 60 competing in the 350cc Championship throughout the season.
Riders aged over 60 competing in the WRR Championship, throughout the season.
