- - Grand prix or factory road racing 2-stroke motorcycles 250/350cc built prior to December 1984.
- - 250 and 350 machines will compete together but will be scored as separate classes.
- - Only genuine racing machines are allowed, modified street bikes are not allowed.
- - No replica parts allowed except manufacturing approved parts.
- - All machines must comply with FIM rules regarding safety.
- - All machines must have an excellent level of preparation.
- - The bike must match to standards of the events where they will compete.
- - The eligibility of pilots and machines is at the discretion of the organization.
- - The motorcycle noise is limited to 102db, this is a mandatory rule.
Rules for the new 250cc class : Yamaha Classic 250
- - Frames must be steel or aluminium square or round section, no Deltabox allowed.
- - All engines must be parallel twin, V twins motors engine are not allowed.
- - Engine stroke and bore must be the same as when the bike was produced, cylinders must have period external size.
- - Cylinder gugeons must have original location in the crankcase.
- - All machines must have 18 or 16 inch wheels.
- - Brakes are free.
- - Air boxes are encouraged, this to reduce the noise level, new rules in Europe will soon ask to go under 102 DB..
- - No upside down forks.
- - No flat slide carburetors, except period Lectrons.
- - No reed valves.
- - No cassette gear boxes.
- - No recut tyres, no wets.
- - No change of tyres allowed in case of race restart (red flag ).
- - No tyre warmers allowed.
- - All period bikes are eligibles.
- - Drain plug restraint, foot peg extremity rounded, recoil tank, etc..
- -AVON tyres are mandatory on all ICGP bikes.
- - YAMAHA GP machines from 1984 up to 1990.
- - ICGP rules applies regarding general layout.
- - AVON tyres AM22 front 12754C 120/70VB17 and AM23 rear 14361C 160/60VB17 are a must.
- - This class will have a separate classification assuming that minimum 5 bikes are on the grid.
- - It's a new class subject to test for this season 2016, it will go ahead depending of the riders feed back at the end of the season..
- - Only registered members will score points in the Championship.
- - For British and foreign riders you need a National License with a Start Permission to race out of your respective country.
- - For French riders you need a National License with a "Start Permission" or a "EU license Non Championship".
Yamaha tz 250 / 350, Chevallier, Kawasaki A7R, Kawasaki 350 KR, Rotax, Bimota, Nicco Baker, Spondon, Egli, Harris, Maxton, etc ...