S&S CYCLE Big Bore Cylinder Kit — Bore 4.125", 117 cu in, Stroke 4.375", 10.9:1 – 07-17 Dyna, 07-16 Touring, 07-17 CVO, 09-16 Trike, 07-17 Softail
Complete Big Bore cylinder kit including pistons, rings and gaskets.
Requires case machining and professional installation.
Fits Twin Cooled motors; not recommended for trike models.