Specially designed motor by Briggs and Stratton for the World Formula Racing Class.

Features:

Dual Ball Bearing Block
Electric Start
Chrome Faced Top Ring
Dual Valve Springs
Dished Valves
Nitrided Exhaust Valve
Cast Aluminum Manifold
Premier Clutch w/Kwik Sprocket Set
Billet Aluminum Rod
Walbro round slide carb
Specially ground cam
Racing designed combustion air filter