The RC2 Series Rad Valve multi-stage reed petal system has been designed to increase throttle response and acceleration, while also broadening peak RPM horsepower output. The Rad Valve’s seamless, one-piece, precision casting and continuous aero-form surfacing provide maximum flow velocities and instant, explosive movement of air particles the moment you turn the throttle. Standard equipment on each Rad Valve, are Boyesen’s dual-stage carbon reed petals. The race-proven reed petals are integral in providing the superior ability to maintain timing with the power pulses of the Yamaha engine platform. Gain maximum flow velocity across the entire RPM range, and at all throttle settings. Smooth. Sharp. Smart.

• Internal precision surfacing treatment eliminates all hard edges that interrupt the proper delivery of air and fuel. Because internal air turbulence is virtually non-existent, the proper air/fuel control is optimized for the characteristics of the engine's platform.
• Multi-Staged reed petal stacks feature Aerospace carbon material interwoven into tension combinations that maximize power delivery and peak horsepower. Boyesen engineers specifically tune the carbon matrix tension using a model-specific, carbon weave formula that is tested and optimized.
• For replacement reeds please order Boyesen RC2 Series Rad Valve Replacement Reeds