Boyesen Motorcycle valve box Rad Yamaha YZ125 (CE08)

The engineers Boyesen have developed a series of technical innovations in their range of intake systems to optimize power, torque, and flexibility: Aerodynamic Surface Optimization (internal surface optimization), Model-Specific Reed Petal Tensioning (model-specific reed petals), Material Fuel Resistance (hydrocarbon-resistant materials), and Multi-Stage Reed Timing (staged opening reeds).
The reed valves BOYESEN are developed specifically for each motorcycle model.

• 100% aluminium reed valve body, optimised internal surface
• 4-way diffuser to optimise flow and minimise pressure loss
• Intake pipe and mounting clamps included, direct fit with no modification
• Variable flexibility reeds, model-specific (made from aerospace-grade carbon)
• Rubber-coated reeds resistant to hydrocarbons ensuring a prolonged lifespan for the seals

The RC2 reed valves, developed in competition, significantly optimise intake flow, leading to more efficiency, more power, and better revving on YOUR motorcycle!

Specifications:

• weight (g): 384
• width (mm): 111
• height (mm): 111
• length (mm): 147
• volume (cm³): 1811