This 5" stroke 8-1/4" diameter flywheel assembly replaces the original flywheels in S&S 103" SH103 engines for 1970-'84 HD big twins. Balanced to S&S 3-5/8" bore pistons. Flywheels are CNC machined from heat-treated, closed die, steel forgings, and are stronger than cast iron or late style steel flywheels. Dynamically balanced and fully assembled with premium quaility S&S mainshafts and heavy duty 7.440" connecting rods.

Instructions Link (Click Here)

Manufacturer: S&S Cycle

Part #: 32-2990