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Complete S&S top-end kit with heads, pre-fit forged pistons, and all necessary hardware for quick installation.
Durable Big Bore upgrade with premium aluminum cylinders and cast-in iron liners. Kit includes pistons, rings and gaskets. Made in the USA. Requires skilled installation.
Cylinders with a stock bolt pattern, bored slightly under nominal size and left un-honed; designed for 124" hot set up kits and '99-'17 Twin Cams. Requires crankcase machining.
Complete big-bore cylinder and piston kit with forged pistons, gaskets, and hardware; ideal for stroker engine builds. Made in the U.S.A.
Direct-fit big bore kit for improved displacement and performance. Includes cylinders, pistons, rings and gaskets. Professional installation required.
Stud and nut kit that reinforces rocker arm shaft standoffs to help prevent cylinder head cracking.
Complete 96" big bore kit includes cylinders, pistons, rings and gaskets; made in the U.S.A.; requires crankcase boring and a skilled technician for installation.