BOYESEN Rad membraan systeem - Yamaha YZ250 Variable flexibility valves specific to

Variable flexibility valves specific to each model (aerospace grade carbon)

the internal wall of EXP 4

Large secondary compartment for belongings and essentials

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} By dramatically lowering the temperature of the oil–and your water temp accordingly–Twin Air's patented oil cooler can keep your rides–and your engine–at peak performance longer

BOYESEN Rad membraan systeem - Yamaha YZ250 Variable flexibility valves specific 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