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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
Meets or exceeds OEM specifications and tolerances
Stroke: Original (39 mm)
All components were developed through extensive research and development on ProX’s in-house engine dyno
Heavy Duty Forged steel
1991 Yamaha YFS200 Blaster
MOTORCYCLE RAD VALVE 59-7211M Meets or exceeds OEM specificationsBOYESEN 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
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