4 1/8" Bore Piston Set for Racing Applications for T124

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.