3-5/8 Piston Set.010 Oversize - V-Twin 11-0238

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.

Fitment:

Installation instructions (PDF)