S&S Crankpins

13 products — part of all Crankpins

S&S crankpins for Harley-Davidson are engineered to handle the additional bottom-end stress of S&S big-bore and stroker engine builds — the flywheel hardware experiencing dramatically higher combustion forces when displacement increases beyond stock dimensions. S&S specify crankpin material, diameter, and journal finish for the specific loads generated by S&S V-series engines and oversized piston-and-cylinder kits, not the OEM specifications adequate for stock displacement but marginal under serious performance modification. The range also covers OEM-spec applications on 1981-1999 Evolution Big Twins for builders specifying S&S components throughout a performance rebuild. Iron City Motorcycles stocks S&S crankpins for the Harley-Davidson performance build that needs every bottom-end component engineered for the power levels being produced. Browse the full S&S Crankpins range below.