Replacement 80 inch Evolution piston kit. Pistons are standard size. Our kit includes 2 cast alloy pistons Hasting ring set wrist pins and circlips. **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. FITS 1984-1994 FXR 1984-1998 FLT 1984-1998 FXST 1986-1998 FLST 1991-1998 FXD ACCESSORIES 16-0912 - Cylinder Oil Replacement Tube 11-2618 - Evolution Cylinder and Piston Kit Black REPLACEMENT 11-0190 - 3-1/2 inch Evolution Piston Ring Set Standard 11-0871 - Piston Wrist Pin and Lock Kit 12-0949 - Piston Wrist Pin Lock RESOURCES View in Catalog View Instructions