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Engagement curve designs updated to better match modern motorcycle engine characteristics
Improved clutch modulation
High-flow Blaster™ bite valve self-seals after each sip and features a twist on/off bar to prevent leaks when not in use
mud and grime to help make sure your engine is not only protected but can still breathe freely in the most brutal conditions
For road use with small and medium engine capacities (less than 500cm3)
BOYESEN Rad membraan systeem - Yamaha YZ250 Engagement curve designs updated 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
