3-5/16 Piston Set.020 Oversize - V-Twin 11-0427

Piston set with 3-5/16 inch bore is.020 oversize. Set includes Hasting 3 piece rings 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast.

The deck compression height measures 1.645. **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.

Fitment:

Installation instructions (PDF)