Wiseco K1642 Forged .020 Oversize 8.5:1 Compression Piston Kit

Wiseco 80 inch Evolution flat top piston kit is .020 oversize. Piston kit has a compression of 8.5:1 compression and includes rings.

The Wiseco K1642 Forged .020 Oversize 8.5:1 Compression Piston Kit is designed for select 1984–1993 Harley-Davidson FXR applications. This kit features a forged piston with an 8.5:1 compression ratio and .020-inch oversize specification. The unit of measure is a kit, and the country of origin is the USA.

Before installation, review the Wiseco piston installation and fitment guide provided by the manufacturer. Proper break-in is important for new pistons and rings. Run the engine at moderate speeds for at least 500 miles while avoiding excessive operation in lower gears to help properly break in the new pistons and rings.

Suggested items include the Wiseco 3-1/2-inch piston ring in .020-inch oversize, part number 11-9760, and piston circlips, part number 11-9773. Accessory items listed for this kit include the Ring-O-Matic Ring Compressor Tool Kit, part number 16-0622, part number 60-0167, and the Wrist Pin Ring Tool, part number 16-0075.

Features:

• Brand: Wiseco
• Part Number: K1642
• Design: Forged piston
• Oversize: .020 inch
• Compression Ratio: 8.5:1
• Product Type: Piston kit
• Fitment: 1984–1993 Harley-Davidson FXR
• Country of Origin: USA
• Break-In Requirement: Run the engine at moderate speeds for at least 500 miles while avoiding excessive running in lower gears

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