Pro Stock Rules
Open to ages 12-19
1. Class open to 900 lb, 1100 lb, 1300 lb hooks.
2. All tractors must use lawn mower type motor. 45.6 cubic inch V-twin maximum, 50.5 cubic inch Single cylinder maximum.
3. Unlimited rpm limit.
4. Relocation of components allowed.
5. Modifying of body panels allowed.
6. Bar lug and V-tread Pro pulling tires allowed. Bar lug tires may be cut.
7. 7 foot limit from center of rear axle to furthest point front including any weights.
8. All tractors must have wheelie bars.
9. All tractors must have adjustable hitch with no less than 1 1/2 inch hole for hook.
10. All tractors must have rear mounted tether kill switch.
11. Flywheel must be covered 360 degrees.
12. Over 4000 rpms, shroud must be built according to Safety rules, under 4000 rpms stock shroud allowed.
13. All belts must be covered.
14. All tractors must have hood.
15. All tractors must have rear fenders.
16. No turbos.
17. All tractors must use stock rear end.
18. Motors must be completely closed in.
19. Maximum carburetor ventri size 1 inch for single barrel carb, 22 mm for two barrel carb. Ventri must be round in shape. Choke plates may be removed.
