The Rotax Series Classes:
For 11 to 17 year olds, the class is run to the regulations in the MSA Kart Race Yearbook (the Gold Book), and chassis registrations are NOT required. A restricted version of the Rotax Junior 125cc engine is used. Tyres are Vega SL8 with Vega wets. Number plates are yellow with black numbers.
For 13 to 17 year olds, the class is run to the regulations in the MSA Kart Race Yearbook (the Gold Book), and chassis registrations are NOT required. A de-tuned version of the senior 125cc engine is used. Tyres are Vega SL8 with Vega wets. Number plates are red with white numbers.
For drivers from age 16th year upwards, this senior class runs to the regulations in the MSA Kart Race Yearbook (the Gold Book). The engine is a powerful 125cc two-stroke, with an on-board electric self-starter. Vega SL6 slicks and wets are used. Number plates are blue with white numbers.
Offered for the first time in 2006, this senior class runs to the same regulations as Senior Max except that the weight limit is higher and the driver must weigh a minimum of 85kg. Number plates are green with white numbers.
Offered for the first time in 2007, this senior class runs to the regulations published by JAG and the ABkC. The engine is a powerful 125cc two-stroke, with an on-board electric self-starter, and has two forward gears. Grippier Vega FM slicks and wets as Max are used.