1. Single turbo allowed

2. No more than 3 cylinders

3. No more than 45 cubic inch

4. Garden tractor frames only

5. Bar tire up to 26 x 12 x12

6. 13” hitch height maximum

7. No propane, nitrous, or alcohol allowed in fuel

8. 1050# and 1150 # classes

9. Clutch must be covered on all sides (360 degrees)

10. Head must be tied down-recommended to wrap entire motor with 5/16 “ cable and 2 clamps

11. Steel flywheel required

12 1# minimum fire extinguisher required on the tractor

13. Filled blocks allowed

14. Fire suit recommended

15. Cross bolt required in exhaust

16. Guilatine shut off required on turbo charger

17. Turbo must be wrapped with cable