KB Performance Warehouse

KB263+60

KB Performance Hypereutectic Piston Kit (74ci., Domed) .060 Oversize to 3.497, 9.0:1 Compression KB263+60

Pistons

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. 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.This item fits the following models: 1941-1950 Harley Davidson E1941-1952 Harley Davidson EL1941-1950 Harley Davidson F1941-1964 Harley Davidson FL1953-1964 Harley Davidson FLF1965-1969 Harley Davidson FLFB1955-1964 Harley Davidson FLH Electra Glide1970-1979 Harley Davidson FLH Electra Glide1965-1969 Harley Davidson FLHB1979 Harley Davidson FLHC Electra Glide Classic1955-1964 Harley Davidson FLHF1970-1972 Harley Davidson FLHF1965-1969 Harley Davidson FLHFB1971-1978 Harley Davidson FX Super Glide1974-1978 Harley Davidson FXE Super Glide1979 Harley Davidson FXEF Fat Bob1977-1979 Harley Davidson FXS Low Rider

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