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stiffness index 7
allowing one more gear to be used
Complete spring set
pivots and adjusters
Disc thickness: 3mm
BOYESEN Rad membraan systeem - Yamaha YZ125 stiffness index 7Boyesen 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
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