Engine

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Bolt-on performance kit with bolt-in cams and premium tappets. Easy installation with no machining or rebalancing. Uses stock heads, pushrods, and fuel system.
Complete bolt-on big-bore kit that raises displacement without case machining. Includes cylinders, forged pistons, upgraded oil pump/cam plate, valvetrain hardware, and all gaskets and bearings for installation.
Ready-to-assemble cylinders and pistons with rings and gaskets; eliminates machining and head changes. Designed for use with 883 heads.
Complete 132" engine performance kit converts 114"/117" oil-cooled M8 to 132" with big-bore cylinders, performance-matched 550 cam, adjustable relief valve, and serviceable components.
Complete kit to convert 114" or 117" oil-cooled M8 engines to 132" displacement while retaining stock height and serial numbers. Includes adjustable pressure relief valve, S&S valve springs, big-bore cylinders, MLS head gaskets and a performance-matched 550 cam.
Complete piston kit with forged pistons, rings, wrist pins, and clips. Deck height 1.1875". For use with super stock heads on compatible models.
3.5-inch piston set for engine rebuilds; precision-machined for reliable sealing and durability.
Complete kit with forged pistons, rings, wrist pins and clips. Made in the U.S.A.
Complete piston kit with pistons, rings, wrist pins and clips for a complete motor replacement. Made in the U.S.A.
Forged piston kit for 74\" big twin motors. Includes pistons, rings, wristpins, and clips. Made in the U.S.A.
Forged piston kit for 80" stock Big Twin motors. Includes pistons, rings, wristpins, and clips. Requires connecting rods with a 7.440" rod length (OEM #24281-74A). Made in the United States.
Forged pistons kit includes pistons, rings, wrist pins, and clips. Wrist pin deck height 1.436". Requires 7.440" connecting rods (OEM #24281-74A). Made in the U.S.A.