Cast from 4340 chromoly steel and heat treated. With 660 alloy bronze bushing fit of .0007″ to .0012″ which is used for best wear resistance and oil control. Roller tip is made bearing grade material for longer life. With standard 1.625 rocker arm ratio. Works with stock and stock like components. For replacement parts see: 978033 roller, rocker arm. 978034 axle, rocker arm roller tip. 978035 lock ring, rocker arm.
