Motorcycle valve box Honda CR500R

The engineers Boyesen have developed a range of technical innovations in their intake system lineup to optimize power, torque, and smoothness: Aerodynamic Surface Optimization, Model-Specific Reed Petal Tensioning, Material Fuel Resistance, and Multi-Stage Reed Timing.

• The BOYESEN reed valves are specifically developed for each motorcycle model
• 100% aluminium reed valve body with optimized internal surface
• 4-way diffuser to optimize flows and avoid pressure losses
• Intake pipe and fixing clamps included, direct mounting without modification
• Variable flexibility reed petals, specific to each model (made from aerospace-grade carbon)
• Rubber-coated reeds resistant to hydrocarbons ensuring prolonged seal life

The reed valves, developed in competition, significantly enhance intake flows, leading to greater efficiency, more power, and better revving on YOUR bike!