UK Karting

Kart Classes

There are over 20 kart classes in the UK, with all of those listed below recognised by the MSA. Meetings are held for almost all classes on a regular basis by local kart clubs although not all clubs offer racing for all classes, so always check first.


Cadet & Junior Classes
 
Comer Cadet Age: 8 - 12 years
Weight: 97kg (S60 = 95kg)  (Min. Kart & Driver)
Engine: 60cc Comer engine with Clutch. Recoil starter.
WTP Cadet Age: 8 - 12 years
Weight: 100kg for 2005 regs (Min. Kart & Driver).  The new B5 TAG engine, when approved, will raise the weight to 103kg, and the existing B1 engine will fall to 93kg minimum weight.
Engine: 60cc WTP sealed engine, clutch.
Junior TKM - 2S Age: 11 - 16 years
Weight: 129kg (Min. Kart & Driver)
Engine: TKM BT82 100cc restricted Piston-Port engine, optional clutch.
Jnr TKM Inter - 2S Age: 11 - 16 years
Weight: 144kg (Min. Kart & Driver). Minimum driver weight 62kg.
Engine: TKM BT82 100cc restricted Piston-Port engine, optional clutch.
Junior Blue Age: 11 - 16 years
Weight: 125kg to 155kg (Min. Kart & Driver). See regulations.
Engine: IAME Linx 100cc, clutch, driver/weight restrictors.
Junior UK Clubman Age: 11 - 16 years
Weights: 125k - 140kg (Engine dependant) Min driver weight from 60kg.
Engine: Parilla Leopard 125cc or piston-port engines (restricted)
Jnr Rotax MiniMax Age: 11 - 16 years
Weight: 135kg (Min. Kart & Driver)
Engine: Rotax FR125 Junior Max (restricted)
Junior Rotax Age: 13 - 16 years
Weights: 145kg (Min. Kart & Driver)
Engine: Rotax FR125 Junior Max
JICA
(Junior Intercontinental A)
Age: 13 - 16 years
Weight: 135kg (Min. Kart & Driver)
Engine: CIK 100cc piston-port engine with clutch.
Honda Cadet Age: 8 - 12 years
Weight: 100kg (Min. Kart & Driver)
Engine: Honda Gx160 160cc four-stroke engine with clutch.
Junior TKM - 4S Age: 11 - 16 years
Weight: 140kg (Min. Kart & Driver)
Engine: TKM 200cc 4-stroke junior version, clutch, restrictor.
Honda Junior Age: 11 - 16 years
Weight: 145kg & 152kg (Min. Kart & Driver)
Engine: 2 x Honda Gx120cc (145kg) or 2 x Gx160cc (152kg), clutch.
Honda Junior Heavy Age: 11 - 16 years
Weight: 160kg. Minimum driver weight 62kg.
Engine: 1 x Honda Gx120 & 1 x Honda Gx160 4-stroke clutched engine.
Junior Gearbox Age: 13 - 16 years
Weight: 155kg. (Min. Kart & Driver)
Engine: TM85 MC and Honda CR80 engines, 6 speed.

Senior Classes
 
Formula 100 National Age: 16 years +
Weight: 155kg (Min. Kart & Driver)
Engine: Generally 2003 & earlier rotary-valve engines, 24mm carb.
Formula TKM - 2S Age: 16 years +
Weight: 148kg & 163kg (heavy) (Min. Kart & Driver)
Engine: TKM BT82 115cc piston-port engine with optional clutch.
Rotax Max 125 Age: 16 years +
Weight: 162kg (Min. Kart & Driver)
Engine: Rotax FR125 Max sealed two-stroke engine with clutch.
Formula Blue Age: 16 years +
Weight: 125kg to 155kg (Kart & Driver)  See regulations
Engine: NKRA listed engines
Formula Libre Age: 16 years +
Weight: 155kg (Kart & Driver)
Engine: 100cc direct drive. (Open grid for club racing)
ICA
(Intercontinental A)
Age: 16 years +
Weight: 150kg (Min. Kart & Driver)
Engine: Reed valve 2-stroke engines (maximum 100cc), 24mm carb.
Formula A Age: 16 years +
Weight: 150kg (Min. Kart & Driver)
Engine: Rotary or reed valve engines. Latest models.
Formula TKM - 4S Age: 16 years +
Weight: 162kg & 175kg (heavy) (Min. Kart & Driver)
Engine: TKM 200cc 4-stroke, clutch
Honda Senior Age: 16 years +
Weight: 175kg (Min. Kart & Driver)
Engine: 2 x Honda Gx160 160cc 4-stroke engines with clutch.

Gearbox Classes

See also 'Cadet & Junior Classes' for junior gearbox.  (Novices are not allowed on long circuits)

125 ICC (UK) Age: 16 years +
Weight: 180kg (Min. Kart & Driver)
Engine: 125cc reed valve engines with 30mm carburettor.
125 Open Age: 16 years +
Weight: 185kg Short circuit (Min. Kart & Driver)
Engine: 125cc reed or rotary valve engines.
210 Age: 16 years +
Weight: 185kg Short circuit & 190kg Long circuit (Min. Kart & Driver)
Engine: Villiers 9E (or replicas) air-cooled 2-stroke engines.
250 National Age: 16 years + (17 years + for long circuit)
Weight: 195kg Short circuit & 200kg Long circuit (Min. Kart & Driver)
Engine: 250cc single-cylinder engines with 5 speed gearbox.
Formula 250E Age: 16 years + (17 years + for long circuit)
Weight: 210kg (Min. Kart & Driver with Bodywork)
Engine: 250cc twin-cylinder + Rotax 257 + 125cc twin engines.

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