Wiseco 80 inch Evolution flat top piston kit standard size. Piston kit has a compression of 8.5:1 compression and includes rings.
The Wiseco K1640 Forged 8.5:1 Compression Piston Kit is designed for optimal performance and durability on Harley Davidson FXR models from 1984 to 1993. Crafted in the USA, this high-quality kit features forged pistons that provide increased strength and longevity for demanding riding conditions. The kit includes pistons, rings, and necessary components to ensure a comprehensive upgrade for your engine. Proper break-in is essential; run your engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears to allow the new pistons and rings to seat properly. For detailed installation instructions, visit this link.
The Wiseco K1640 kit offers a compression ratio of 8.5:1, providing a good balance of power and reliability. Features include precision-machined forged pistons that deliver consistent performance and enhanced durability. The kit is compatible with Wiseco Piston Ring Set (SKU: 11-9759) and Piston Circlips (SKU: 11-9773), ensuring a perfect fit and optimal sealing. Accessories such as the Ring-O-Matic Ring Compressor Tool Kit (SKU: 16-0622), Wrist Pin Ring Tool (SKU: 16-0167), and other installation tools are recommended for a smooth installation process.
Constructed in the USA, this kit is an excellent choice for motorcycle enthusiasts seeking to upgrade their Harley FXR engines with reliable, high-performance pistons. Whether restoring an older model or building a custom engine, the Wiseco K1640 kit provides the quality and precision needed to enhance your motorcycle's performance and longevity.
Features:
- Forged piston construction for increased strength and durability
- Compression ratio: 8.5:1 for balanced power and reliability
- Includes pistons, rings, and necessary installation components
- Designed for Harley Davidson FXR models from 1984 to 1993
- Proper break-in recommended: run at moderate speeds for 500 miles, avoiding excessive low gear operation
- Compatible with Wiseco Piston Ring Set (SKU: 11-9759) and Piston Circlips (SKU: 11-9773)
- Accessory Items: 16-0622 - Ring-O-Matic Ring Compressor Tool Kit, 16-0167 - Wrist Pin Ring Tool
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
