ATV Classes: A) 0-50 cc ATV (12 & under) 2 & 4 Stroke B) 51-125 cc ATV (12 & under) 2 & 4 Stroke C) 0-70 cc Bikes (12 & under) 2 & 4 Stroke D) 71-150 cc Bikes (12 & under) 2 & 4 Stroke E) 126-250 ATV (12 & under) 2 & 4 Stroke / NO 250R F) 400 & below Knobbies ATV 4 Stroke Only G) 450 & up Knobbies ATV 4 Stroke Only H) 2 Stroke Trail Knobbies ATV 2 Stroke Only I) OPEN OUTLAW 2 & 4 Stroke J) 300 & below cc Dirt Bike 2 & 4 Stroke K) 350 2 Stroke Modified / NO NOS L) 400 & below Modified ATV 4 Stroke Only / NO NOS M) 350 2 Stroke Clutch N) 450 & up Modified ATV 4 Stroke Only / NO NOS O) 450 Dirt Bike 2 & 4 Stroke P) 4 Stroke OPEN - ATV & Dirt Bike Q) Modified Knobbie R) 250 Open S) Powder Puff T) 2 Stroke Open U) Utility / Side by Side / Non Turbo V) Knobbie Automatic W) "Senior" Class age 40+ / No Drag Quads X) 450 & up Trail Rider Class 4 Stroke Only Y) 250-300 ATV 4 Stroke Only Z) Open Automatic
Trucks & Full Size Vehicle Classes: A) Work Stock Diesel 4.3 time limit @ 200 ft B) Hot Street Diesel 3.95 time limit @ 200 ft C) Mod Diesel D) Street Gas Truck 4.5 time limit @ 200 ft E) 4x4 4 & 6 Cylinder F) Hot Gas G) Manual (Diesel & Gas) H) 2WD 4 & 6 Cylinder I) 2WD 8 Cylinder & Diesel J) Buggies K) Semi Trucks L) Open M) 4.0 Index Class