what class are you entering ?
you can swap the spring on your ohlins or shock to another (kayaba) to reduce travel to class rule
nbssr rule
>> Track and Suspension trail class
- Speed tracks are NOT allowed in stock classes. Minimum 0.500 inch lug height.
- OEM suspension must be used,addition or removal of wheels permitted.
- Enviromentally friendly lube systems NOT allowed.
- OEM ski's or aftermarket ski's must be a minimum of 40 inches.
- Must retain OEM drive sprockets.
- No lowering of the machine is allowed.Suspension must retain 2 inches of front and rear travel.
- The only way of lowering a sled is by using the provided factory adjustments. No straps, chains or wires permitted.
- Carbide tipped trail studs only.
pro class
Speed tracks are allowed in stock classes. Minimum 0.500 inch lug height.
- OEM suspension must be used,addition or removal of wheels permitted.
- Enviromentally friendly lube systems allowed.
- OEM ski's or aftermarket ski's must be a minimum of 40 inches.
- Must retain OEM drive sprockets.
- Suspension must retain 2 inches of front and rear travel
- Rear idler wheels must retain stock diameter.