Boyesen engineers have developed a series of technical innovations in their range of intake systems to optimise 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).
BOYESEN reed valve assemblies 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 included, direct fit without modification
• Variable flexibility reeds, specific to each model (Aerospace quality carbon)
• Rubber-coated reeds resistant to hydrocarbons ensuring prolonged seal life

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

Replacement reeds: 360088

Replacement gasket: 650070