MOTORCYCLE RAD VALVE 59-7211M Stroke: Original (39 mm)

Stroke: Original (39 mm)

9 piece kit necessary to remove/install the lower ball joints of Polaris ATV and SxS models with pressed-in ball joints on the front strut casting

Heavy Duty Forged steel

Replacement piston for the Roost Havoc 50cc Cylinder kit

All components were developed through extensive research and development on ProX’s in-house engine dyno

MOTORCYCLE RAD VALVE 59-7211M Stroke: Original (39 mm)BOYESEN engineers embarked on a mission to create a new lineage of aerodynamic intake technology by refining the primary performance factors required to increase peak horsepower through design innovation: Aerodynamic Surface Optimization, Model Specific Reed Petal Tensioning, Material Fuel Resistance, and Multi Stage Reed Timing. Together, these innovations create a new technological benchmark in intake performance. Boyesen Engineering would like to