STOCK RULES

  • NO Launch controls allowed
  • Engine must be of stock bore, stroke, and compression for model year of sled.
  • NO base gasket changes or alterations that change stock engine dimensions.
  • Must have Stock carburetor and OEM Air Box for model and year.
  • OEM exhaust pipes and muffler must be stock for model and must exit out of stock exhaust hole.
  • Must have stock clutches front and rear.
  • Stock or any OEM track can be used but not shaved or turned around.
  • NO Rail Extensions Allowed and NO aftermarket suspension rails allowed.
  • Sled must have stock suspension and track length that it came with from OEM.
  • Only carbide tip studs can be used in any amount. NO ice picks, chisels or grinding of studs is allowed.
  • Suspension must be stock for model and year. NO drilling or relocating of arms or stock wheels or travel limiting of suspension is allowed. NO rail extensions allowed.
  • Stock or any aftermarket skis may be used, but NO short or shortened skis allowed.
  • Use of Stock CDI or ECU only.
  • Must have Hood, and working factory Headlight and Taillight.
  • No aftermarket EFI kits.
  • No pressured fuel systems, turbo or NOS kits.
  • No aftermarket Reed Valves or Blocks.
  • Pump Fuel Only – 94 Octane Maximum for Stock Class
  • MUST HAVE WORKING HEADLIGHT, TAILLIGHT in the Factory Location
  • Working TETHER must used at all times.

IMPROVED STOCK RULES

  • Crankcase, Cylinders, Chaincase and Drivetrain must be OEM.
  • OEM number of cylinders and Stroke must be maintained.
  • Pipes/Cans are OK but must exit out of stock exhaust hole.
  • Aftermarket heads, reeds and blocks are OK.
  • Sleds with OEM Fuel Injection can have changes made to regulators added for adjusting fuel.
  • Sleds WITHOUT OEM Fuel Injection can NOT have it added on.
  • No aftermarket EFI kits.
  • NO Rail Extensions Allowed and NO aftermarket suspension rails allowed.
  • Sled must have stock suspension and track length that it came with from OEM.
  • NO cleated Tracks.
  • Any carbide tip studs or chisel system can be used.
  • NO remounting of suspension except in OEM holes or OEM pre drilled holes.
  • Must have Hood, WORKING HEADLIGHT, TAILLIGHT in Factory Location
  • Working TETHER must used at all times.
  • Any Primary or Secondary Clutches can be used.

Lake Drag Rules

  • All modifications allowed.
  • Any fuel system allowed.
  • Any track or stud (chisel) system allowed.
  • 4 classes – over or under 1,000 cc in either natural or power added (turbo, etc.).
  • Working TETHER must used at all times.