Keith Black 80 Inch Evolution Domed Piston Kit.010 Oversize for Harley FXR
Increase engine power and reliability on Harley‑Davidson FXR models with the Keith Black Evolution Domed Piston Kit, sized for a 3.498‑inch bore and +.010 oversize.
- Hypereutectic alloy construction: cast in a permanent steel mold for consistent dimensions and durability
- Oversize +.010 fit: designed for a 3.498-inch bore to maximize performance
- Compression ratio: 10.5:1 for increased power and efficient combustion
- Low heat transfer alloy: keeps piston skirts cooler, reducing expansion and wear
- High ring placement: enhances power, reduces detonation, and improves sealing
- Designed for Harley Davidson FXR models: 1984 through 1993
- Includes installation instructions: http://www.vtwinmfg.com/Instructions/MS/KB Conversion Piston Guide and Fitment.pdf
- Part number: KB266.010
Keith Black dome piston set is.010 oversize with a 10.5:1 compression ratio for 1984-up Big Twin Evolution models.
The Keith Black 11-2224 80 Inch Evolution Domed Piston Kit is engineered for high performance and durability in Harley Davidson FXR models from 1984 to 1993. Crafted from hypereutectic alloy, this piston is cast in a permanent steel mold, ensuring precise dimensions and a reliable fit for your engine rebuild or upgrade. Featuring a.010 oversize design to fit a 3.498-inch bore, it provides an excellent foundation for enhancing engine power and efficiency. The piston’s 10.5:1 compression ratio optimizes combustion, boosting horsepower while maintaining fuel economy. The low heat transfer properties of Keith Black’s alloy keep the piston skirts cooler, minimizing expansion and wear, which extends the lifespan of your engine components. The high ring placement in this design not only improves power output but also reduces the risk of detonation and increases the top ring temperature for better sealing and performance.
Features:
- Hypereutectic alloy construction: cast in a permanent steel mold for consistent quality and durability
- Oversized.010 fit: designed for a 3.498-inch bore to maximize performance
- High compression ratio: 10.5:1 for increased power and efficiency
- Low heat transfer alloy: keeps piston skirts cooler, reducing expansion and wear
- High ring placement: enhances power, reduces detonation, and improves sealing
- Designed for Harley Davidson FXR models: 1984 through 1993
- Includes installation instructions: http://www.vtwinmfg.com/Instructions/MS/KB Conversion Piston Guide and Fitment.pdf
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
