BOYESEN Radiator Valve RM125 RAD21F

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, Order one set per cylinder