In-stock and Stock-based classes, no change or mod is allowed unless specifically allowed by these rules. If these rules do not specifically allow a change or mod, then it must be assumed that the change or mod is not allowed.
Stock Rules
Snowmobile must begin as a qualified stock snowmobile that was sold to the general public by a maker. The snowmobile must have original OEM and year for the model engine, frame suspension, cowl, fuel tank, airbox, throttle bodies, variable speed converter, and seat. Named components must be OEM for the model and year, or properly… Continue Reading →
IMP Stock Rules
Snowmobile must begin as a qualified stock snowmobile. Any alterations allowed in stock are allowed in Improved Stock. The snowmobile must have original OEM for the model engine, frame, front and rear suspension arms, cowl, fuel tank, airbox, seat components, all must be OEM for the model and year, or properly filed OEM replacement parts… Continue Reading →
IMP Stock Turbo Rules
Engine must be OEM for the model. Turbo must be OEM for the model and NO altering of housing or wheel. Pump Gas 93 octane. No straight pipe (must have muffled exhaust exiting the bottom). Studder buttons are allowed. Unaltered commercially available carbide tipped trail studs. Cheisel nuts allowed. No side exhaust. Rail extensions allowed…. Continue Reading →
Pro IMP Rules
The snowmobile must have original OEM for the model engine, frame and tunnel. Engine Engine components must be OEM for the model unless otherwise specified. May be modified internally, but engine must retain its complete external stock appearance and dimensions. Number of cylinders must be OEM for the model. No external fastening devices allowd to… Continue Reading →
Pro Mod Rules
Any engine allowed. Engine must not exceed displacement limit for the class. Maximum overbore is defined as 2% over the cc displacement limit of the class. Any functionally silenced exhaust system allowed. The exhaust emission pipe must not protrude more than three (3) inches beyond the chassis or hood configuration. The clutch cover must be… Continue Reading →
Pro Mod Turbo Rules
Engine must be OEM for model. Turbo must be OEM for model unaltered (NO modifying of compressor wheel or housing). Any fuel permitted. Any studs permitted. Clutch cover is required.
King of the Trail Rules
Chassis serial number must be permanently affixed to the side of the tunnel in the area of the right-side footrest. Any fuel allowed. Unaltered commercially available carbide tipped trail studs, Cheisel nuts allowed. No side exit exhausts allowed (exhaust must exit from the bottom with muffled exhaust). Turbo may be used as muffler as long… Continue Reading →
Lake Racer/Pro 55 Rules
Chassis serial number must be permanently affixed to the side of the tunnel in the area of the right-side footrest. 2000cc maximum. Power adders allowed. Max Turbo 55/58 allowed.
Outlaw NA Rules
200cc maximum. No power adders allowed.
Outlaw Rules
Power adders allowed. 2000cc maximum.
