Rocker Arms – Big Twin/XL

The lightest rocker arm available, but still has superior strength characteristics due to its design; The strength of 660 bronze bushings and bearing-grade steel for the roller tip; Extensively tested under extreme conditions to ensure durability in your engine; Will accept cams with up to .700″ lift at a ratio of 1.625 (stock); Made in the U.S.A.; Twin Cam rocker boxes may need to be clearanced.