Harley Davidson 1941-77' FL, FX S&S 74" Forged Piston Set Std Bore

S&S forged piston set 3-7/16" bore is standard size. Set includes rings, wrist pins and retainers. Machined to fit 4-3/4" or 4-5/8" stroker flywheels.
**Note:Run engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears, in order to properly break-in new pistons and rings.