1. Engine
A. Snowmobile or motorcycle, 550cc 2 cycle or 850cc 4-cylcle
B. Any tractor class can run in this class under their rules.
2. Max 1 barrel carburetion per cylinder, Gas or alcohol is allowed, factory fuel injection is allowed.
3. Engines must be naturally aspirated,
4. Must be equipped with working kill switch. (engine and fuel pump.)
5. Exhaust must be pointed vertical up more than 30 degrees variance,
6. Unit may run a locked rear end.
7. Hitch must be no closer than 6” from hook point center of rear axle and may not extend farther than 30” from center of rear axle.
8. Chassis : Minimum length 6’ maximum of 8’ length centerline of rear axle to furthest point forward. Maximum width is 5’ and must have fenders. Must extend horizontally over tire 4” from vertical of inside of tire to keep driver away from the tires. Must have strong seat with 3” or more backrest.
9. Minimum Requirements:
A. Must have enclosed clutches, flywheels, jack shafts, chains, and drive shaft mounted disc brakes enclosed 360 degrees using 1/8th steel hoop.
B. Side plates the length of the crankshaft.
C. Tractors with automatic transmissions must have a legal scatter blanket or 1/8” or ¼” aluminum metal around them from the back of the clock to the tail shaft housing.
10. Snowmobile clutches and belts must to totally enclosed with minimum 1/8” steel.
11. Must be 16 yrs of age subject to AMPI board Discretion.