KB PERFORMANCE
Piston Kit - 3.437" +0.060" - 9.0:1 CR - 74" Big Twin
Part # DS-751208
$239.95
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Confirmed fit for 173 motorcycle configurations across Harley-Davidson, model years 1941–1979.
| Years | Make & Model |
|---|---|
| 1941-1979 | Harley-Davidson FL |
| 1979 | Harley-Davidson 1200 Super Glide FX |
| 1965-1979 | Harley-Davidson Electra Glide FL |
| 1949-1957 | Harley-Davidson Hydra Glide FL |
| 1958-1964 | Harley-Davidson Duo Glide FL |
| 1979 | Harley-Davidson 1200 Super Glide FXE |
| 1965-1969, 1978-1979 | Harley-Davidson 1200 Electra Glide FLH |
| 1941-1947 | Harley-Davidson Knucklehead FL |
| 1979 | Harley-Davidson Electra Glide FLH |
| 1979 | Harley-Davidson Electra Glide Sport FLHS |
| 1979 | Harley-Davidson Low Rider FXS |
| 1979 | Harley-Davidson 1200 Fat Bob FXEF |
| 1979 | Harley-Davidson Fat Bob FXEF |
| 1979 | Harley-Davidson 1200 Low Rider FXS |
| 1979 | Harley-Davidson Super Glide 80 FXE |
| 1971-1978 | Harley-Davidson FX Super Glide |
| 1973-1979 | Harley-Davidson FXE Super Glide |
| 1977-1979 | Harley-Davidson FXS Low Rider |
| 1970-1979 | Harley-Davidson FLH Electra Glide |
| 1958-1964 | Harley-Davidson FLH Duo-Glide |
| 1965-1969 | Harley-Davidson FLHFB |
| 1979 | Harley-Davidson FXEF Fat Bob |
| 1979 | Harley-Davidson FLHC Electra Glide Classic |
| 1955-1957 | Harley-Davidson FLH Hydra-Glide |
| 1965-1969 | Harley-Davidson FLHB |
| 1955-1964, 1970-1972 | Harley-Davidson FLHF |
| 1953-1964 | Harley-Davidson FLF |
| 1965-1969 | Harley-Davidson FLFB |
- 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
- Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy
- 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.
- Replacement piston rings and pin lock rings available separately
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Overview
The KB PERFORMANCE DS-751208: Piston Kit - 3.437" +0.060" - 9.0:1 CR - 74" Big Twin. Confirmed fit for 173 motorcycle configurations across Harley-Davidson, model years 1941–1979. Ships from Greasemoto — a veteran-owned motorcycle parts shop in Fort Worth, TX — with free U.S. shipping on orders over $100.
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Fits these motorcycles
- Harley-Davidson FL
- Harley-Davidson 1200 Super Glide FX
- Harley-Davidson Electra Glide FL
- Harley-Davidson Hydra Glide FL
- Harley-Davidson Duo Glide FL
- Harley-Davidson 1200 Super Glide FXE
- Harley-Davidson 1200 Electra Glide FLH
- Harley-Davidson Knucklehead FL
- Harley-Davidson Electra Glide FLH
- Harley-Davidson Electra Glide Sport FLHS
- Harley-Davidson Low Rider FXS
- Harley-Davidson 1200 Fat Bob FXEF
- Harley-Davidson Fat Bob FXEF
- Harley-Davidson 1200 Low Rider FXS
- Harley-Davidson Super Glide 80 FXE
- Harley-Davidson FX Super Glide
- Harley-Davidson FXE Super Glide
- Harley-Davidson FXS Low Rider
- Harley-Davidson FLH Electra Glide
- Harley-Davidson FLH Duo-Glide
- Harley-Davidson FLHFB
- Harley-Davidson FXEF Fat Bob
- Harley-Davidson FLHC Electra Glide Classic
- Harley-Davidson FLH Hydra-Glide