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.
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