11-1704 - 80 Evolution Piston Kit .005

Replacement 80 inch Evolution moly coated piston kit. Pistons are .005 oversize. The moly coating helps reduce friction and wear. This kit includes wrist pins Hasting ring set locks and has a 10.5:1 compression. With a 3.498 inch bore. **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: Install pistons with raised bars or on wrist pin area towards the sprocket shaft side of the engine.