Here is a list of the classes for Chetek

Kids: (ages 12-16) must have a parent signature)

Trail Stock: (full suspension, no speed tracks, no aftermarket pipe)
Fan 500 600 700 800 1000

Race Stock: (lowered, 0.5 inch speed track, slide lubes allowed)
Fan 500 600 700 800 1000

Improved Stock: (aftermarket pipes, 0.5 “ speed track, stock length skis, no air dam)
0-600 601-800 801 & up

Pro Stock: (must be stock appearing – no turbos or nitros)
0-700 800 801-999 1000 and up

Lake Racer: (full body sled with 2 stroke motor, power adder, and speed tracks allowed)

Open Modified: (no turbos or nitros)
0-500 501-700 701-800 801 and up

Four Stroke:
Stock or Modified

Exhibition: (this is for laydowns and custom chassis sleds with power adders)

Vintage: (1985 and older)
0-340 341-440 441-650 650 and up

Bike/Cycle : (all in one class)

ATV:
Stock or Modified

Just for fun: (non competing class)