Compatible with stock or S&S rocker boxes. Rocker arm ratio 1.50 (stock Shovel 1.43 ratio). Forged from 4140 steel, heat treated and shot peened for additional strength. Options note: Can be oiled through the pushrods (Evo style) when used with special S&S Shovelhead tappet guides (512-494), a set of Evo style tappets, S&S Quickee pushrods (512497) and an Evolution style cam. Note: Will also fit S&S P-series (Panhead style) engines. Note: For replacement parts see 531-367 rebuild kit with rollers, bushings and axles. 531-372 rocker arm shaft set. 531-368 rocker arm bushing.
Fits: > 66-84 Shovelhead; S&S SH-series engines; S&S P-series (Panhead style) engines
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