The Post Classic specifications will now read as follows:

601 – 1050cc 4 stroke and 351- 750cc 2 stroke cut off date 31st December 1985.

Up to 600cc 4 stroke cut off date 31st December 1985.

126-250cc Grand Prix Factory Bikes Steel frame or period aluminium frame, and brakes, any wheels, cut off date 31st December 1985.

126-250cc Standard frames. Standard fairings, No air boxes. Any brakes, Cut off dates 1st January 1985 to 31st December 1991.

251-350cc Steel frame, and brakes, any wheels, cut of date 31st December 1985.

The general eligibility is that machines are to be manufactured before 31st December 1985 or manufactured in subsequent years without substantial alterations.

Manufacturers may also incorporate components of a type manufactured before 31st December 1985 or manufactured after that date without substantial alteration.



In particular, and with reference to each machine:

Wheels must be of a size available as a 31st December 1985

Suspension systems must be of a type available as at 31st December 1985 (Subject to the replacement of shock absorbers)

Forks must be of a type available as at 31st December 1985

Engines must be of a type available as at 31st December 1985 (with those manufactured after 31st December 1984 restricted to original capacity)

Carburettors must be of a type available as at 31st December 1985

Frames and swinging arms must be of a type available as at 31st December 1985

Except for two strokes under 350cc where there is no restriction on either brakes or wheels.

250 Grand Prix factory machines manufactured before must be of a type available ay 31st December 1985 and are restricted to steel or period frames, whilst 250cc machines manufactured before December 1991 are restricted to standard frames and are not permitted to use air boxes.

There are no restrictions regarding exhaust or braking systems.


Regulations and Entry Forms will be available shortly