- Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports
- Provide quicker, sharper throttle response and more horsepower throughout rpm range
- Specially-designed reed cage holds Boyesen's patented dual-stage reeds
- Boyesen's hot RAD valves ratchet up your torque
- One-piece cast aluminum bolts in easily
Patented, one piece, cast aluminum Reed Block system that delivers guaranteed bolt on performance. Designed to be used with stock maniflods and carbs. Gasket provided. No modifications required.
Order one set per cylinder
Applications:
- 1987-2006 Yamaha Banshee 350 4x2