Boyesen engineers have developed a series of technical innovations for their range of intake systems aimed at optimizing 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 BOYESEN reed valves are specifically developed for each motorcycle model.

• 100% aluminium valve body, optimised internal surface state
• 4-way diffuser to optimise flows and prevent pressure losses
• Intake pipe and mounting clamps provided, direct installation without modification
• Variable flexibility reeds, specific to each model (Aerospace quality carbon)
• Rubber-coated reeds resistant to hydrocarbons ensuring prolonged seal life

The RC2 reed valves, developed in competition, significantly optimise intake flows, resulting in greater efficiency, more power, and better revs on YOUR motorcycle!

• Replacement reeds: 360143
• Replacement gasket: 650067