S&S Cycle 106-5520 Forged Piston Kit (80ci.) - .010 Oversize, 8.75:1 High Compression

Replacement pistons available for stock 74in., 80in. and 35/8in. big-bore applications. All pistons kits come with two pistons, rings, wrist pins, and wrist pin keepers. Compression ratios listed are approximate and are calculated using the correct length cylinders as specified by S&S. Requires the use of connecting rods with a rod length of 7.440in.(standard length OEM #24281-74A connecting rods); use of earlier connecting rods with a rod length of 7.470in. (OEM #24281-41A) will result in a slight increase in the compression ratio of about 1/2 point, and may also result in clearance problems (check all piston to cylinder head clearances carefully when using the early style rods).

Vehicle Fitment:

1941-1950 Harley Davidson F
1941-1964 Harley Davidson FL
1953-1964 Harley Davidson FLF
1965-1969 Harley Davidson FLFB Electra Glide
1958-1964 Harley Davidson FLH Duo-Glide
1970-1984 Harley Davidson FLH Electra Glide
1955-1957 Harley Davidson FLH Hydra-Glide
1965-1969 Harley Davidson FLHB Electra Glide
1979-1981 Harley Davidson FLHC Electra Glide Classic
1955-1964 Harley Davidson FLHF
1970-1972 Harley Davidson FLHF
1965-1969 Harley Davidson FLHFB Electra Glide
1980-1981 Harley Davidson FLHS Electra Glide Sport
1984 Harley Davidson FLHS Electra Glide Sport
1983 Harley Davidson FLHTC Electra Glide Classic
1984 Harley Davidson FLHX Electra Glide Special
1980-1983 Harley Davidson FLT Tour Glide
1981-1983 Harley Davidson FLTC Tour Glide Classic
1971-1978 Harley Davidson FX Super Glide
1980-1982 Harley Davidson FXB Sturgis
1983 Harley Davidson FXDG Disc Glide
1974-1984 Harley Davidson FXE Super Glide
1979-1981 Harley Davidson FXEF Fat Bob
1982-1983 Harley Davidson FXR Super Glide II
1982-1983 Harley Davidson FXRS Low Glide
1983 Harley Davidson FXRT Sport Glide
1977-1982 Harley Davidson FXS Low Rider
1983-1984 Harley Davidson FXSB Low Rider - Belt
1980-1984 Harley Davidson FXWG Wide Glide