Eligibility

This is a summary of the groupings and classes of motorcycles racing in the CRMC Championships and machines eligible for CRMC races and parades.

The eligibility rules are available from the document library

Age & Types of Machines

Machines considered in the following groups will normally be of a type raced in Europe in the relevant period. Other machines that do not meet this criterion may be referred for inclusion by the CRMC committee

Grand Prix

Thoroughbred machines as raced in Grand Prix, TT and certain short circuit racing.

Clubman

Machines built for racing and of a type raced during the period (as defined below) using as a basis engines not qualifying for Grand Prix together with certain machines which do not meet Sports or Production specification. Included in Post Classic is the Air-Cooled Class for machines up to 500cc 

Sports (Classic) & Production (Post Classic)

Essentially unmodified production road and sports machines.

Superbike, Superbike 750 & 1300 (Post Classic)

Machines 501cc and above built for racing and of a type raced during the period (as defined below) using as a basis engines not qualifying for Grand Prix together with certain machines which do not meet Production specification.

Formula Ducati TTF1 Superbike (Post Classic)

Machines up to 1300cc that meet the formula specifications contained in the Eligibility Rules, which you can read in the document library

750 Superstock (Post Classic)

Post Classic 750 Superstock is designed for 750cc production based machines manufactured and raced pre 1987, such as the Yamaha FZ750 and Suzuki GSXR750.

Parade-Only

Machines solely for Parade use which in the opinion of the management committee will add variety and interest to CRMC parades even though they might not specifically meet the eligibility requirements. Such machines will not normally be eligible for racing.

Age Classifications (or periods)

Bikes are divided into age classifications as below

Classic 1 (Previously Period 1)

All machines = 1st January 1945 and 31st December 1963

Classic 2 (Previously Period 2)

Four stroke machines = from 1st January 1964 to 31st December 1972 

Two stroke machines = from 1st January 1964 to 31st December 1967

Post Classic 1 (Previously Period 3)

From 1st January 1973 for four stroke machines to the date stated below according to engine size 

From 1st January 1968 for two stroke machines to the date stated below according to engine size 

100cc up to 125cc single or twin cylinder = 31st December 1986 

126cc up to 250cc single or twin cylinder = 31st December 1984 

251cc and above single, twin, triple, or four cylinders = 31st December 1981

Post Classic 2 (Previously Period 4)

126cc and above single or multi-cylinder machines = from January 1st 1982 to December 31st 1986 

Note: Any 50cc or 125cc Grand Prix machine, whether two or four stroke, is eligible for Classic if constructed before 31st December 1972.

CRMC Championships - More about our Classes & Championships

We do our best to fill the grids with compatible machines that will be competitive against each other. Obviously, this very much depends on the machines that enter each individual race event but we think you'll find that a good mix and variety of machinery makes for good, close and competitive racing at CRMC events.

Classic Grand Prix

Thoroughbred racing machines built for Grand Prix , TT and certain Short Circuit racing. Classic 1 - 1945 to 1963 Classic 2 - 1964 to 1972 (1967 for 2-strokes)

Classic Grand Prix

Championships

  • 05a - Up to 500cc Classic GP & Clubman by invitation
  • 10a - ACU Classic 500cc Championship

Classic Clubman

Machines built for racing and of a type raced during the classic period, using engines that do not qualify for Grand Prix, together with certain machines that do not meet other GP specifications classic sports

Classic Clubman

Championships

  • 04b - Classic Up to 350cc & Rider 55yrs or over
  • 05b - Classic Clubman 351cc - 500cc
  • 06a - Classic Formula 750cc (Maximum 780cc)
  • 07c - Classic Clubman 251cc - 1300cc
  • 10c - King of the Classics (for larger machines)

Classic Sports

Production road and sports motorcycles of a type used for production racing in the classic period, not having a frame and engine from different manufacturers 

Classic Sports

Championships

  • 02a - Up to 200cc Classic Four Strokes
  • 03a - Up to 250cc Classic European & Four Stroke Twins
  • 04a - Up to 350cc Classic European
  • 04b - Classic Up to 350cc & Rider 55yrs or over
  • 04c - Up to 350cc Classic Twin & Multi-Cylinder
  • 04d - Up to 350cc Classic BSA Goldstars
  • 05b - Classic Clubman 351cc - 500cc
  • 05c - Up to 500cc Classic BSA Goldstars
  • 06a - Classic Formula 750cc (Maximum 780cc)
  • 07c - Classic Clubman 251cc - 1300cc
  • 10c - King of the Classics (for larger machines)

Classic Sidecars

Sidecars are classified by capacity into Period 1 Production Based 750cc, Period 2 Multi's and Specials 750cc and Period 3 Open Class up to 1300cc. Period 4 (from the 2019 season) is for specified production & GP engines

Classic Sidecars

Championships

  • 01a - Sidecars - P1
  • 01b - Sidecars - P2
  • 01c - Sidecars - P3
  • 01d - Sidecars - P4

Post Classic Clubman

Machines raced in the period using production-based engines fitted in either race-specific chassis or production chassis not qualifying for Grand Prix. Unrelated engine and chassis combinations are not permitted. 

Post Classic Clubman

Championships

  • 08c - Post Classic 1 & 2 750cc Clubman
  • 08d - Post Classic 1 Up to 500cc Air-Cooled
  • 08h - P/Classic 1 Up to 250cc A/Cooled & Classic Twins Up to 250cc

Post Classic Grand Prix

Thoroughbred racing machines built for Grand Prix , TT and certain Short Circuit racing. Post Classic 1 - 1972 to 1981* (1967 on for 2-strokes) Post Classic 2 - 1982 to 1986 *some later cut-offs apply.

Post Classic Grand Prix

Championships

  • 09a - Post Classic GP1 Up to 250cc
  • 09b - Post Classic GP1 Up to 350cc
  • 09d - Post Classic GP1 125cc (Piston-Port)
  • 09e - Post Classic 1 & 2 125cc Open
  • 10c - ACU Post Classic Championship/King of the Classics

Post Classic Superbike

Machines 501cc and above built for racing and of a type raced during the post-classic period using as a basis engines not qualifying for Grand Prix together with non-Production machines.

Post Classic Superbike

Championships

  • 08a - Post Classic Superbike 1 & PC1 500cc Grand Prix
  • 08b - Post Classic Superbike 2 & PC2 500cc Grand Prix
  • 10c - ACU Post Classic Championship/King of the Classics

Post Classic Production

Production road and sports motorcycles of a type used for production racing in the classic period, not having a frame and engine from different manufacturers 

Post Classic Production

Championships

  • 08e - Production Up to 600cc F/Stroke & 350cc T/Stroke
  • 08f - Production 601-1300cc F/Strokes & over 350cc T/Strokes

Post Classic Superstock

Post Classic 750 Superstock is designed for 750cc production based machines manufactured and raced pre 1987

Post Classic Superstock

Championships

  • 08k - Post Classic Superstock