KB PERFORMANCE - KB263.STD/Hypereutectic Piston Kit - Piston Kit - FX/FL
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 | 3.437" |
| Bore Oversize | Standard |
| Compression Ratio | 9.0:1 |
| Units | Kit |
| Riding Style | Street |
Fitments
| 1980 | Harley-Davidson | FLHS Electra Glide Sport |
| 1979-1980 | Harley-Davidson | 1200 Super Glide FXE |
| 1979-1980 | Harley-Davidson | 1200 Fat Bob FXEF |
| 1979 | Harley-Davidson | 1200 Low Rider FXS |
| 1977-1978 | Harley-Davidson | FXS Low Rider |
| 1974-1978 | Harley-Davidson | FXE Super Glide |
| 1971-1978 | Harley-Davidson | FX Super Glide |
| 1970-1977 | Harley-Davidson | FLH Electra Glide |
| 1965-1980 | Harley-Davidson | Electra Glide FL |
| 1965-1969, 1978-1980 | Harley-Davidson | 1200 Electra Glide FLH |
| 1958-1964 | Harley-Davidson | Duo Glide FL |
| 1958-1964 | Harley-Davidson | FLH Duo-Glide |
| 1949-1951, 1953-1957 | Harley-Davidson | Hydra Glide FL |
| 1948 | Harley-Davidson | FL |
| 1941-1947 | Harley-Davidson | Knucklehead FL |
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.
Periodically cleaning of your wheels is necessary to maintain a high luster, especially 24K gold plated wheels these require extra care. Always clean using a mild dish soap and water such as Dawn and a clean microfiber cloth, to clean inside the hub and spokes use a soft horse hair paint brush. NEVER use any harsh cleaning compounds or waxes as the are abrasive and will remove the gold plating. During storage spray a light coating of WD40 on the wheels to prevent rusting.