Boyesen Motorcycle valve box Rad Honda CR250R

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

• 100% aluminium reed valve body, optimised internal surface condition
• 4-way diffuser to optimise flow and avoid pressure loss
• Variable flexibility reeds, specific to each model (aerospace grade carbon)
• Rubber-coated reeds resistant to hydrocarbons ensuring a prolonged lifespan for seals

The RC2 reed valves, developed for competition, significantly optimise intake flow, resulting in increased efficiency, more power, and better throttle response on YOUR motorcycle!

Specifications:

• weight (g): 329
• width (mm): 114
• height (mm): 111
• length (mm): 147
• volume (cm³): 1860