VT#: 11-0479
S&S 89" Evolution Stroker replacement piston set is .030 oversize 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.
Replacement for 4-5/8" flywheels