The CSRA operates under (I.S.R.) International Snowmobile Racing rules unless otherwise written in one of our CSRA newsletters.
Competitors can not modify, or remove, or change, any part of their snowmobile in any Stock racing classes unless it is written that you can do so or approved in the International Snowmobile Racing (ISR) rule book, or in a CSRA newsletter.
If CSRA or ISR rules do not say a specific change can be made to a race sled, it is to be assumed the change can not be made or the rider will be disqualified.
Racers and their crew members are responsible to know CSRA & ISR Snowcross rules.
