$38.00
← Back to shop
Fitment unknown
KB PISTONS
CAST PISTONS EVO 80CI 8.6:1.040
SKU KB258.040·Hard Drive
$143.64
Out of stock · stock as of Sep 7, 2026
Shipping calculated at checkout
30-day returns on unused parts
Details
KB Hypereutectic alloy pistons are cast with a 16% high silicon content that has very high thermal barrier properties along with a low thermal expansion rate, allowing tight piston to cylinder wall clearances. This makes them ideal for air-cooled engines, offering optimal ring seal, quieter engine running and reduced wear. Hypereutectics are best suited for stock or mild compression ratios up to 10.5:1 running on pump fuel.
Specs
- Weight Lb
- 2.5
- Shipping Class
- standard
Vehicle Fitment
Supplier-confirmed applications for this exact part. Match the year, make, and model before ordering.
Harley Davidson FLH Electra Glide
1984–1985
Harley Davidson FLHR Road King
1994–1998
Harley Davidson FLHRC Road King Classic
1998
Harley Davidson FLHS Electra Glide Sport
1984, 1987–1993
Harley Davidson FLHT Electra Glide
1986–1987, 1995–1998
Harley Davidson FLHTC Electra Glide Classic
1984–1998
Harley Davidson FLHTCU Electra Glide Ultra Classic
1989–1998
Harley Davidson FLHX Electra Glide Special
1984–1985
Harley Davidson FLST Softail Heritage
1986–1990
Harley Davidson FLSTC Softail Heritage Classic
1988–1999
Harley Davidson FLSTF Softail Fat Boy
1990–1999
Harley Davidson FLSTN Softail Heritage Special
1996
Harley Davidson FLSTN Softail Nostalgia
1993–1995
Harley Davidson FLSTS Softail Heritage Springer
1997–1999
Harley Davidson FLTC Tour Glide Classic
1984–1993
Harley Davidson FLTCU Ultra Classic Tour Glide
1989–1996
Harley Davidson FLTR Road Glide
1998
Harley Davidson FXD Dyna Super Glide
1995–1998
Harley Davidson FXDB-D Dyna Glide Daytona
1992
Harley Davidson FXDB-S Dyna Glide Sturgis
1991
Harley Davidson FXDC Dyna Super Glide Custom
1992
Harley Davidson FXDL Dyna Low Rider
1993–1998
Harley Davidson FXDS-Conv Dyna Convertible
1994–1998
Harley Davidson FXDWG Dyna Wide Glide
1993–1998
Plus 20 more model applications.
