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Senior Rotax and Rotax 177

picture of senior rotax racing

Facts and figures

bullet pointNumber plates: Blue/white

bullet pointAges: 16 years and over

bullet pointWeight kg (Senior Rotax) 162kg

bullet pointWeight kg (Rotax 177) 177kg
spacerBoth weights are with driver.

bullet pointTyres – dry: Mojo D2 Yellow

bullet pointTyres – wet: Mojo W2

bullet pointEngine: 125cc Rotax FR125
spacerwith power valve.

picture of rotax engine


The senior equivalent of Junior Max, with a very powerful 125cc TAG engine. This is the biggest class to run at club level and always fields large grids. The engine is high revving but is limited electronically and this means lower maintenance. The engines are sealed to prevent unapproved tuning. Like many classes there is a higher weight variant called Rotax 177 for the heavier driver.


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Buckmore Park Kart Club, Buckmore Park Kart Circuit, Maidstone Road, Chatham, Kent ME5 9QG