BOYESEN Rad membraan systeem - Yamaha YZ125 S3 Gas Gas Racing factory

S3 Gas Gas Racing factory cylinder

All kits include: cylinder head cover

but also helps reducing friction after the wear in

High-quality materials and surface treatment

BOYESEN Rad membraan systeem - Yamaha YZ125 S3 Gas Gas Racing factoryBoyesen 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