Boyesen Motorcycle valve box Rad Kawasaki KX500

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 (optimisation of internal surfaces), Model-Specific Reed Petal Tensioning (model-specific reed valves), Material Fuel Resistance (hydrocarbon-resistant materials), and Multi-Stage Reed Timing (staged opening reed valves).
The reed valves BOYESEN are specifically developed for each motorcycle model.

• 100% aluminium body, optimized internal surface
• 4-way diffuser to optimize flows and avoid pressure losses
• Intake pipe and mounting clamps provided, direct fitting without modification
• Variable flexibility reed valves, specific to each model (made from aerospace-grade carbon)
• Rubber-coated reed valves resistant to hydrocarbons, ensuring extended gasket life

The RC2 reed valves, developed for competition, significantly optimize intake flows, leading to greater efficiency, more power, and better revs on YOUR motorcycle!

Specifications:

• weight (g): 457
• width (mm): 114
• height (mm): 108
• length (mm): 145
• volume (cm³): 1785