S&S CYCLE Big Bore Cylinder Kit — 4.125 in bore, 4.625 in stroke, 124 cu in, 11.4:1 compression, Black – 07-15 Dyna, 07-15 CVO, 10-11, 13 Touring, 10-15 Trike, 07-15 Softail

🛠️ The Big Bore Cylinder Kit yields excellent results with stock cylinder heads and is built from premium aluminum castings with cast-in iron liners.

• Easy installation — no need to bore or split existing cases; simply swap the cylinders unless otherwise noted.
• The kit includes cylinders, pistons, rings and gaskets for the head, base and exhaust.
• Made in the USA; project requires a skilled technician to check all clearances and assembly specifications.
• Will fit Twin Cooled motors; case machining is required for installation.