Replica 1000cc 3-3/16 Piston Set.070 Oversize - V-Twin 11-2721 - Ironhead 1972-1985

Replica 3-3/16 inch bore piston set has a 9:1 compression ratio and is.070 oversize. Set includes a piston ring set 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast.

**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: