Have Questions?
The Keith Black KB266.010 80-inch Evolution Domed Piston Kit .010 is designed for compatible Harley-Davidson FXR applications from 1984 through 1993. This set features a hypereutectic alloy piston cast in a permanent steel mold, supporting a lightweight piston design intended to help produce more power, improve fuel economy, and provide extended service life.
The piston is .010 inch oversized for a 3.498-inch bore and has a 10.5:1 compression ratio. Its low-heat-transfer alloy helps keep the skirts cooler and minimizes piston expansion, while the high ring placement is designed to reduce detonation and increase top-ring temperature. This Keith Black piston kit is supplied as a set.
For proper break-in, run the engine at moderate speeds for at least 500 miles and avoid excessive operation in lower gears. Fitment includes 1984–1993 Harley-Davidson FXR models. Manufacturer fitment instructions are referenced in the product data.
Features:
- Brand: Keith Black
- Part Number: KB266.010
- Application: 80-inch Evolution engine
- Piston Type: Domed piston kit
- Material: Hypereutectic alloy
- Oversize: .010 inch for a 3.498-inch bore
- Compression Ratio: 10.5:1
- Construction: Cast in a permanent steel mold
- Ring Placement: High ring placement designed to reduce detonation and increase top-ring temperature
- Break-In: Run at moderate speeds for at least 500 miles and avoid excessive operation in lower gears
- Unit of Measure: Set
- Fitment: 1984–1993 Harley-Davidson FXR
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
| UOM: SET |
| Country Of Origin: MEXICO |
| Suggested Items: 11-1364 - 80 inch Shovelhead Piston Ring Set .010 |
| Accessory Items: 16-0622 - Ring-O-Matic Ring Compressor Tool Kit 60-0167 16-0075 - Wrist Pin Ring Tool |
