*item may differ from images
These 3-7/16" standard bore, standard compression stroker pistons are part of an S&S stock bore stroker kit for 1936-'84 HD® big twins, and are designed to be used in conjunction with S&S® stroker flywheels. Flywheels of the following strokes may be used for the following displacements: 4-1/2" stroke - 84" @ 8.4:1 compression, 4-5/8" stroke - 86" @ 9.4:1 compression, 4-3/4" stroke - 88" @10.8:1 compression.
- The modern alloys used in these pistons, coupled with the advanced skirt profiles, allow them to be fit tighter resulting in low engine noise and long engine life
- These pistons are normally used in stock HD® cylinders, and must be purchased separately, based on the required piston oversize
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1941-1947 | Harley-Davidson | EL | Base |
| 1941-1962 | Harley-Davidson | FL | Base |
| 1953,1955-1959 | Harley-Davidson | FLF | Base |
| 1958-1959 | Harley-Davidson | FLH Duo-Glide | Base |
| 1970-1978 | Harley-Davidson | FLH Electra Glide | Base |
| 1955-1957 | Harley-Davidson | FLH Hydra-Glide | Base |
| 1955-1959 | Harley-Davidson | FLHF | Base |
| 1971-1978 | Harley-Davidson | FX Super Glide | Base |