Kart Classes

Motorsport UK Classes 2019

Class

Number Plate/No. Weight kg (inc driver) Ages Tyres – Dry Tyres – Wet Comments
Bambino White/Black 69 6-8 Le Cont MSA04 Le Cont MSA04 Comer C50 MSA homologated 2-stroke engine
IAME Cadet Yellow/Black 103 8-13 Dunlop LS2 MSA KT3 Barcoded 60cc Parilla Gazelle un-sealed engine, clutch, pull starter
Honda Cadet Yellow/Red 103 8-13 Dunlop LS2 MSA KT3 Barcoded GX160 4-stroke budget engine, clutch, pull starter
Junior TKM 2S Blue/White From 123 11-16 Maxxis TKM Green F TKM As TKM with restrictor, optional clutch, optional TAG
MiniMax Yellow/Black 135 12#-15 Mojo D2 Mojo W2 CIK Restricted version of Rotax Junior Max
Junior Max Red/White 148 13-16 Mojo D2 Mojo W2 CIK Junior version of Rotax Senior Max
MiniX White/Black 136 12#-15 Komet K1H Komet K1W Restricted version of X30 Junior
X30 Junior Green/White 148 13-16 Komet K1H Komet K1W Junior version of X30 with restrictor
OK Junior Yellow/Black 142 12-16 TBA TBA Junior version of OK, these are push start karts
TKM 2S Extreme Red/White From 132 16# Maxxis TKM Green F TKM 115cc BT82, optional clutch, optional TAG
Rotax Max Blue/White 162 16# Mojo D5 Mojo W2 CIK 125cc d/drive commercial TAG class (electric start)
Rotax Max/177 Green/White 177 16# Mojo D5 Mojo W2 CIK Heavy-w’t version with 80kg min driver weight
X30 Senior Yellow/Black 164 16# Komet K1H Komet K1W Commercial TAG 125cc IAME engine, not sealed
OK Senior Yellow/Black 152 16 TBA /TBA TBA / TBA International & British Championship
Formula Libre & Clubman Various   16# Various Various Catering for economy or minority classes such as Honda Junior and Senior, World Formula and older engines

KZ2

Yellow/Black 175 16 Le Cont LP

Le Cont LW CIK

International & British Championship 125cc gearbox class

KZ UK Green/White 180 16 Le Cont LP Le Cont LW CIK 125cc reed valve 6 gears with 30mm carburettor
250 National White/Black 195/200* 16+ Dunlop,Vega all CIKOption Same makes as Dry Motocross 250cc single cylinder engines, 450 4-stroke and 175 IAME 2-stroke options, 125 Open may race in this class

 

 

Key: + means 17 years minimum for long circuit racing. 2S: 2-stroke engine; 4S: 4-stroke engine (Classes are 2S unless otherwise shown)

# means year of the birthday.  OK Junior driver must hold a National A licence.

Many class regulations call for specific tyre markings on the tyres e.g. ABKC, JAG, MSA, GB etc, See Kart Race Yearbook.

Junior classes have a minimum driver weight, for safety reasons. Junior TKM 38kg & MiniMax 39, Junior Max, 42.5, and seniors for under 16’s.

Junior Max & Junior X30 may race in year of 13th birthday for experienced drivers

*250/210 Gearbox has two weights, one when short circuit or no bodywork is fitted, the heavier for when wings or long circuit bodywork is fitted.

MOJO
TILLOTSON
BRIDGESTONE
DUNLOP
MAXXIS
TKM
ARAI
IAME
DID
HONDA
TILLETT
MIR
TONYKART
ROTAX
RK