HARLEY 3-5/8 inch Piston Set .010 Oversize Fits 1948-1984 FL, 1971-1984 FX, 1979-1983 FLT, 198

Piston set with 3-5/8 inch bore 8.5:1 compression ratio and is oversize .010. Set includes Hastings 3 piece ring set 2 wrist pins and 4 circlips. pistons have a steel expansion control strut cast. For 4-1/2 inch stroke 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. *NOTE: The finished bore size should be 3.8750 inch to fit 3-5/8 cylinders. FITS HARLEY: 1948-1984 FL, 1971-1984 FX, 1979-1983 FLT, 1982-1983 FXR,