VT#: 11-0475
S&S 89" Evolution Stroker replacement piston set is standard size for 4-5/8" flywheels with a 9.25:1 compression with rings.
**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. Piston kit is cast type.
Replacement for 4-5/8" flywheels