- Converts stock engines to 124" for non-balanced Twin Cam models.
 - Complete kit with S&S heads, pistons, cams, tappets, pushrods, rocker arms, hardware and gaskets.
 - Made in the USA; EFI recalibration required. Fuel or ignition system not included.
 - Verify all clearances and assembly specifications before installation.
 
Engine
Active filters
Comprehensive kit to upgrade a stock Shovelhead; includes cylinders, pistons, flywheel assembly, rods, pushrods, gaskets and a heavy-duty top motor mount.
Complete bolt-in engine performance kit from S&S. Includes cylinders, piston kits with pins and clips, Easy Start® cams, Quickee pushrods, TC3 cam support plate and oil pump, and precision hydraulic tappets. Made in USA. Not for '06 Dyna; '99–'04 Twin Cams need separate valve spring kit.
Bolt-in engine kit that increases displacement to 100 ci and improves valvetrain durability. Includes cylinders, piston kits, S&S 585 cams, Quickee pushrods, TC3 cam support plate and oil pump, and precision hydraulic tappets. Not for '06 Dyna; not compatible with S&S 79 cc Super Stock® heads.
Complete bolt-in engine performance kit containing S&S cylinders, piston kits, S&S 585 cams, Quickee pushrods, TC3 cam support and oil pump, and precision hydraulic tappets. See compatibility notes before ordering.
Complete S&S performance kit to increase displacement and torque. Includes 4" big-bore cylinder, 10.5:1 pistons, 585 cams, Quickee Pushrods, and hydraulic tappets. Not for S&S 79cc heads.
Complete performance kit with big-bore cylinder, Easy Start cams, Quickee pushrods, and premium hydraulic tappets. Made in the U.S.A. Not for use with S&S 79cc heads.
Complete S&S top-end kit with heads, pre-fit forged pistons, and all necessary hardware for quick installation.
- Designed for S&S® T-Series T2 long block engines for Harley Davidson® big twins
 - 2.000" intake and 1.605" exhaust valves with S&S® ports
 - S&S® high performance valve springs support cam lift up to .650"
 - Compatible with stock rocker boxes, exhaust, and intake manifolds
 - Requires S&S valve cover gasket kit; not machined for compression releases
 
For S&S® Super Stock® Heads only. Kit includes pistons, rings, wrist pins, and circlips. Made in the USA.
Forged piston kit for stock Big Twin motors; includes pistons, rings, wristpins, and clips. Made in the U.S.A.
Forged pistons for superior strength and durability.
Modern alloys and skirt profiles reduce noise and extend engine life.
Includes pistons, rings, wristpins, and clips.
Forged pistons for superior strength and long engine life; kit includes pistons, rings, wristpins, and clips.
Complete piston kit with rings, wristpins, and clips. Made in the USA. Fits up to 4-5/8" stroke; deck height 1.050".
Complete set with forged pistons, rings, wristpins, and clips; made in the USA. Deck height 1.050", fits up to 4-5/8" stroke.
Performance upgrade with precise deck height and wristpin fit; not compatible with twin cooled or '17 touring models.