Boyesen Motorcycle valve box Rad Kawasaki KX85

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

• 100% aluminium reed valve body with optimised internal surface
• 4-way diffuser to optimise flow and avoid pressure losses
• Intake pipe and mounting clamps included for direct fitting without modification
• Variable flexibility reeds, specific to each model (in aerospace-grade carbon)
• Reeds coated with rubber and resistant to hydrocarbons, ensuring prolonged joint life

The RC2 reed valves, developed for competition, significantly optimise intake flow, leading to increased efficiency, more power, and better revving on YOUR motorcycle!

Specifications:

• weight (g): 286
• width (mm): 111
• height (mm): 111
• length (mm): 145
• volume (cm³): 1787