Motorshop 80 Inch Evolution Piston Kit for Harley FXR — Moly Coated, 11:1
Replace your Harley FXR engine with the Motorshop 80 Inch Evolution piston kit, moly-coated to reduce friction and wear and featuring standard-sized pistons for straightforward installation.
- Bore size: 3.4985 inches
- Compression: 11:1
- Included components: wrist pins, Hasting ring set, locks
- Country of origin: USA
- Compatibility: Harley Davidson FXR models 1984–1993
- Installation note: Position pistons with raised bars or wrist pin area toward the sprocket shaft side
- Break‑in guidance: Run at moderate speeds for at least 500 miles, avoiding excessive running in lower gears during initial break‑in
Designed for precise compatibility and optimal performance on FXR builds, this kit supports a seamless engine rebuild or performance upgrade with a complete piston solution.
Replacement 80 inch Evolution moly coated piston kit. Pistons are standard sized. The moly coating helps reduce friction and wear. This kit includes wrist pins Hasting ring set locks and has a 11:1 compression. With a 3.498 inch bore.
Upgrade your Harley Davidson FXR with the Motorshop 80 inch Evolution Piston Kit Standard, designed for precise compatibility and optimal performance. This kit features a 3.4985-inch bore, ensuring a reliable fit for Harley FXR models from 1984 through 1993. Crafted in the USA, this piston kit includes all essential components to facilitate a seamless engine rebuild or upgrade. Proper installation and break-in are critical; run the engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears to ensure the pistons and rings settle correctly. When installing, position pistons with the raised bars or on the wrist pin area toward the sprocket shaft side of the engine for proper alignment and function.
Features:
- Bore Size: 3.4985 inches for precise fitment
- Country of Origin: USA, ensuring high manufacturing standards
- Included Components: Complete piston kit for ease of installation
- Compatibility: Fits Harley Davidson FXR models from 1984 to 1993
- Installation Note: Install pistons with raised bars or wrist pin area towards the sprocket shaft side
Fitment:
Harley Davidson FLST 1986
Harley Davidson FLST 1987
Harley Davidson FLST 1988
Harley Davidson FLST 1989
Harley Davidson FLST 1990
Harley Davidson FLST 1991
Harley Davidson FLST 1992
Harley Davidson FLST 1993
Harley Davidson FLST 1994
Harley Davidson FLST 1995
Harley Davidson FLST 1996
Harley Davidson FLST 1997
Harley Davidson FLST 1998
Harley Davidson FLT 1984
Harley Davidson FLT 1985
Harley Davidson FLT 1986
Harley Davidson FLT 1987
Harley Davidson FLT 1988
Harley Davidson FLT 1989
Harley Davidson FLT 1990
Harley Davidson FLT 1991
Harley Davidson FLT 1992
Harley Davidson FLT 1993
Harley Davidson FLT 1994
Harley Davidson FLT 1995
Harley Davidson FLT 1996
Harley Davidson FLT 1997
Harley Davidson FLT 1998
Harley Davidson FXD 1991
Harley Davidson FXD 1992
Harley Davidson FXD 1993
Harley Davidson FXD 1994
Harley Davidson FXD 1995
Harley Davidson FXD 1996
Harley Davidson FXD 1997
Harley Davidson FXD 1998
Harley Davidson FXR 1984
Harley Davidson FXR 1985
Harley Davidson FXR 1986
Harley Davidson FXR 1987
Harley Davidson FXR 1988
Harley Davidson FXR 1989
Harley Davidson FXR 1990
Harley Davidson FXR 1991
Harley Davidson FXR 1992
Harley Davidson FXR 1993
Harley Davidson FXR 1994
Harley Davidson FXST 1984
Harley Davidson FXST 1985
Harley Davidson FXST 1986
Harley Davidson FXST 1987
Harley Davidson FXST 1988
Harley Davidson FXST 1989
Harley Davidson FXST 1990
Harley Davidson FXST 1991
Harley Davidson FXST 1992
Harley Davidson FXST 1993
Harley Davidson FXST 1994
Harley Davidson FXST 1995
Harley Davidson FXST 1996
Harley Davidson FXST 1997
Harley Davidson FXST 1998
