This 4-1/8" bore piston is intended for use with S&S® special application "Big Fin" cylinder heads in S&S® 124" engines with B2 Twin Cam heads for 1999-'16 HD® big twins. Pistons are clearanced for 4-5/8" stroke. Piston sets include rings. 4-1/8" bore.
Fitment
| Year(s) | Make | Model Code | Model |
|---|---|---|---|
| 1984-2028 | Harley-Davidson | — | Big Twin |
