BOYESEN Rad membraan systeem - Yamaha YZ250 allowing the EXP disk to

allowing the EXP disk to perform what you’d normally do by pulling in the lever

Numerous recesses and slots for straps offer a variety of lashing options

Engagement curve designs updated to better match modern motorcycle engine characteristics

For road use with small and medium engine capacities (less than 500cm3)

BOYESEN Rad membraan systeem - Yamaha YZ250 allowing the EXP disk toBoyesen engineers have applied a range of technical innovations to their range of intake systems to ensure optimal power, torque and smoothness: Aerodynamic Surface Optimization, Model Specific Reed Petal Tensioning (specific valve for each model) , Material Fuel Resistance (materials resistant to hydrocarbons) and Multi Stage Reed Timing (valves that open in stages). The BOYESEN valve diaphragms have been specially developed for each engine model