Hilliard Winter Championship

Light Pro Stock  13" hitch - 1050#

  • 37.5 cubic inch single cylinder, air cooled four cycle.

  • Carburetor must be a stock appearing Kohler type.

  • 1.200 venturi carburetor, no fuel injection allowed.

  • Any ignition is allowed.

  • Stock head bolt pattern. Two valves on the same side.

  • Billet heads allowed.

  • Tractors must have grill and hood.

  • 56 inch wheel base maximum.

  • Wheelie bars, brakes, safety shields required.

  • Steel flywheel. N0 cast iron.
  • Front pulley - 8” O.D. max.

                 Steel must have SDS bushing, bolt & washer to secure.
                 Aluminum - must have taper lock bushing, bolt & washer to secure.
  • Must have flywheel and clutch shields in place.

  • Must have working kill switch and dead man throttle.

  • Tire size 26x12x12 max. Any tire allowed.

  • Firesuit and helmet required. Tractors must be clean and painted.

  • Fuel will be Alcohol Only.  No fuel additives. No pressure tanks.
           Bring your own fuel. All fuel subject to fuel check.
           See general rules for penalty if caught with illegal fuel.
  • No pressure tanks and no nitrous oxide.

  • No pressurized oil systems.


Hilliard Tractor Club reserves the right to tech inspect every aspect any tractor competing
at our events. Hilliard official's decision will be final on any point of controversy.
Disagreements will result in disqualification.​​

*All Hilliard general and safety rules will be strictly enforced.*