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. The snowmobile must have original OEM for the model engine, frame suspension, cowl, fuel tank, airbox, variable speed converter, and seat. Named components must be OEM for the model and year, or properly filed OEM replacement that supersede the original OEM parts. Factory options are not allowed…. Continue Reading →
IMP Stock Rules
Snowmobile must begin as a qualified stock snowmobile. Any alterations allowed in stock are allowed in improved Trail Stock. The snowmobile must have original OEM for the model engine, frame, suspension arms, cowl, fuel tank, air box, seat components must be OEM for the model and year, or properly filed OEM replacement parts that supersede… 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. No side exhaust. Rail extensions allowed. OEM for model… 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 allowed to… Continue Reading →
Pro IMP 1000 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 modification or 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. No side exit exhausts allowed (exhaust must exit from the bottom with muffled exhaust). Turbo may be used as muffler as long as pipe off… Continue Reading →
Lake Race 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
1800cc maximum. No power adders allowed.
Outlaw Rules
2000cc maximum. No power adders allowed.
