Keith Black 80 Inch Evolution Domed Piston Kit.020 For Harley FXR
Keith Black dome piston set is.020 oversize with a 10.5:1 compression ratio for 1984-up Big Twin Evolution models. The Keith Black 390 hypereutectic alloy piston kit offers a combination of lightweight design and durable performance, ideal for Harley Davidson FXR models from 1984 to 1993. Cast in a permanent steel mold, this piston is crafted to enhance engine power, improve fuel efficiency, and extend piston lifespan. Its.020 oversize diameter suits a 3.498-inch bore, making it a precise fit for engine rebuilds and performance upgrades. The low heat transfer characteristics of the alloy help keep the piston skirts cool, minimizing expansion during operation and ensuring reliable performance under high loads. The high compression ring placement further boosts power output while reducing the risk of detonation, contributing to a smoother, more efficient engine operation.
- Hypereutectic alloy: Keith Black 390 for durability and lightweight performance.
- Oversize:.020 inch for a 3.498-inch bore.
- Compression ratio: 10.5:1.
- Engine compatibility: Harley Davidson FXR models from 1984 to 1993.
- Includes: Piston kit with necessary installation components.
Keith Black dome piston set is.020 oversize with a 10.5:1 compression ratio for 1984-up Big Twin Evolution models.
The Keith Black 390 hypereutectic alloy piston kit offers a combination of lightweight design and durable performance, ideal for Harley Davidson FXR models from 1984 to 1993. Cast in a permanent steel mold, this piston is crafted to enhance engine power, improve fuel efficiency, and extend piston lifespan. Its.020 oversize diameter suits a 3.498-inch bore, making it a precise fit for engine rebuilds and performance upgrades. The low heat transfer characteristics of the alloy help keep the piston skirts cool, minimizing expansion during operation and ensuring reliable performance under high loads. The high compression ring placement further boosts power output while reducing the risk of detonation, contributing to a smoother, more efficient engine operation.
Features:
- Hypereutectic alloy: Cast for durability and lightweight performance.
- Oversized:.020 inch for precise fit on a 3.498 inch bore.
- Low heat transfer: Keeps piston skirts cooler for longevity and consistent performance.
- High compression ring placement: Enhances power and reduces detonation risk.
- Engine Compatibility: Fits Harley Davidson FXR models from 1984 to 1993.
- Includes: Piston kit with necessary components for installation.
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
