Boyesen Rad Valve Reed Cage Assembly - Kawasaki - RAD-12I

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports. Made of one-piece aluminum castings and bolts in easily; no modifications necessary. 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 valve provides plenty of torque.