Boyesen Motorcycle valve box Rad Yamaha YZ125

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

• 100% aluminium reed valve body with optimized internal surface
• 4-way diffuser to optimize flow and prevent pressure loss
• Intake manifold and mounting clamps included for direct installation without modification
• Variable flexibility reeds, specific to each model (Aerospace quality carbon)
• Rubber-coated reeds that are fuel-resistant, ensuring prolonged joint life

The RC2 reed valves, developed for competition, significantly optimize intake flow, resulting in greater efficiency, more power, and better rev response on YOUR bike!

Features:

• weight (g): 393
• width (mm): 114
• height (mm): 111
• length (mm): 146
• volume (cm³): 1847