Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy. Allow a tighter fit and longer piston and ring life. Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005") tolerances from piston to piston. Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings. Replacement piston rings and pin lock rings available separately. KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.. Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation..
This Part Fits:
| Year |
Make |
Model |
Submodel |
| 1984 |
Harley-Davidson |
Disc Glide |
FXRDG |
| 1984-1985 |
Harley-Davidson |
Low Glide |
FXRS |
| 1984-1990 |
Harley-Davidson |
Softail |
FXST |
| 1984-1991 |
Harley-Davidson |
Tour Glide |
Classic FLTC |
| 1984-1992 |
Harley-Davidson |
Sport Glide |
FXRT |
| 1984-1998 |
Harley-Davidson |
Electra Glide |
Classic FLHTC |
| 1985 |
Harley-Davidson |
Electra Glide |
FLH |
| 1985 |
Harley-Davidson |
Electra Glide |
FLHX |
| 1985 |
Harley-Davidson |
Low Rider |
FXSB |
| 1985 |
Harley-Davidson |
Super Glide |
FatBob FXEF |
| 1985-1986 |
Harley-Davidson |
Wide Glide |
FXWG |
| 1986 |
Harley-Davidson |
Sport Glide |
Grand Touring FXRT |
| 1986-1987,1995-1998 |
Harley-Davidson |
Electra Glide |
FLHT |
| 1986-1990 |
Harley-Davidson |
Heritage Softail |
FLST |
| 1986-1992 |
Harley-Davidson |
Low Rider |
FXRS |
| 1986-1992 |
Harley-Davidson |
Low Rider |
Sport FXRS-SP |
| 1986-1994 |
Harley-Davidson |
Super Glide |
FXR |
| 1986-1999 |
Harley-Davidson |
Softail |
Custom FXSTC |
| 1987 |
Harley-Davidson |
Low Rider |
Chrome FXRC |
| 1987-1992 |
Harley-Davidson |
Low Rider |
Custom FXLR |
| 1987-1993 |
Harley-Davidson |
Electra Glide |
Sport FLHS |
| 1988-1999 |
Harley-Davidson |
Heritage Softail |
Classic FLSTC |
| 1988-1999 |
Harley-Davidson |
Softail Springer |
FXSTS |
| 1989-1995 |
Harley-Davidson |
Tour Glide |
Ultra Classic FLTCU |
| 1989-1997 |
Harley-Davidson |
Electra Glide |
Ultra Classic FLHTCU |
| 1990-1992 |
Harley-Davidson |
Low Rider |
Convertible FXRS-Conv |
| 1990-1999 |
Harley-Davidson |
Fat Boy |
FLSTF |
| 1991 |
Harley-Davidson |
Dyna |
Sturgis FXDB |
| 1992 |
Harley-Davidson |
Dyna |
Daytona FXDB-D |
| 1992 |
Harley-Davidson |
Dyna Glide |
Custom FXDC |
| 1993 |
Harley-Davidson |
Dyna |
Low Rider Convertible FXRS-Conv |
| 1993 |
Harley-Davidson |
Dyna |
Low Rider Sport FXRS-SP |
| 1993 |
Harley-Davidson |
Heritage Softail |
Nostalgia FLSTN |
| 1993-1994 |
Harley-Davidson |
Dyna |
Low Rider Custom FXLR |
| 1993-1998 |
Harley-Davidson |
Dyna |
Low Rider FXDL |
| 1993-1998 |
Harley-Davidson |
Dyna |
Wide Glide FXDWG |
| 1994-1996 |
Harley-Davidson |
Heritage Softail |
Special FLSTN |
| 1994-1998 |
Harley-Davidson |
Dyna |
Convertible FXDS-Conv |
| 1994-1998 |
Harley-Davidson |
Road King |
FLHR |
| 1995-1997 |
Harley-Davidson |
Bad Boy |
FXSTSB |
| 1995-1998 |
Harley-Davidson |
Dyna |
Super Glide FXD |
| 1995-1998 |
Harley-Davidson |
Electra Glide |
Ultra Classic EFI FLHTCUI |
| 1996 |
Harley-Davidson |
Tour Glide |
Ultra Classic EFI FLTCUI |
| 1996-1997 |
Harley-Davidson |
Road King |
EFI FLHRI |
| 1996-1998 |
Harley-Davidson |
Electra Glide |
Classic EFI FLHTCI |
| 1997-1999 |
Harley-Davidson |
Heritage Springer |
FLSTS |
| 1998 |
Harley-Davidson |
Road Glide |
EFI FLTRI |
| 1998 |
Harley-Davidson |
Road Glide |
FLTR |
| 1998 |
Harley-Davidson |
Road King |
Classic EFI FLHRCI |
| 1999 |
Harley-Davidson |
Night Train |
FXSTB |
| 1999 |
Harley-Davidson |
Softail |
Standard FXST |
