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mud and grime to help make sure your engine is not only protected but can still breathe freely in the most brutal conditions
Durable smooth rolling rollerblade style wheels
High-flow Blaster™ bite valve self-seals after each sip and features a twist on/off bar to prevent leaks when not in use
For road use with small and medium engine capacities (less than 500cm3)
New Vforce4Ri features:
BOYESEN Rad membraan systeem - Yamaha YZ250 mud and grime to helpBoyesen 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
