Features 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 Note 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. Specs Product Name Piston Kit Piston Material Hypereutectic Alloy Bore Size 3.498" Bore Oversize Standard Compression Ratio 8.3:1 Units Kit Riding Style Street Fitments 1984 Harley-Davidson FLHX Electra Glide Special 1983-1984 Harley-Davidson FXSB Low Rider - Belt 1983 Harley-Davidson FLHTC Electra Glide Classic 1983 Harley-Davidson FXRT Sport Glide 1983 Harley-Davidson Electra Glide Standard FLHT 1983 Harley-Davidson FXDG Disc Glide 1982-1983 Harley-Davidson FXR Super Glide II 1982-1983 Harley-Davidson Super Glide II FXRS 1981-1984 Harley-Davidson FXE Super Glide 1981-1983 Harley-Davidson FLTC Tour Glide Classic 1981-1982 Harley-Davidson Electra Glide Classic FLH 1981 Harley-Davidson FXEF Fat Bob 1981 Harley-Davidson Electra Glide Heritage FLH 1980-1984 Harley-Davidson FXWG Wide Glide 1980-1983 Harley-Davidson FLT Tour Glide 1980-1982 Harley-Davidson FLHS Electra Glide Sport 1980-1982 Harley-Davidson FXB Sturgis 1980-1982 Harley-Davidson FXS Low Rider 1980 Harley-Davidson Tour Glide Classic FLTC 1979-1980 Harley-Davidson Super Glide 80 FXE 1979-1980 Harley-Davidson Fat Bob FXEF 1979-1980 Harley-Davidson 1200 Electra Glide FLH 1979 Harley-Davidson Low Rider FXS 1979 Harley-Davidson Electra Glide FLH 1978, 1980-1984 Harley-Davidson FLH Electra Glide Fitment Disclosure This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided. General Safety Warning Failure to follow manufacturer's recommendations and requirements can cause product failure resulting in serious injury or death. While effort has been taken in collecting accurate fitment information, LeMans Corporation accepts no liability for loss or damage resulting from errors or omissions.