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Fully assembled 79 cc Super Stock® cylinder heads — large valves, high port flow; fits 88"–103" motors, ideal up to 110".
Fully assembled replacement head optimized for smaller displacement engines. Intake manifold and gasket kits sold separately.
Fully assembled 79 cc Super Stock® cylinder heads with large valves, high-flow ports, and S&S valve springs. Works with 88–110 cu in engines. Does not include rocker components or gaskets.
Fully assembled Super Stock® heads with performance valve springs and moderate valve sizing for strong low- and midrange response. Compatible with stock rocker boxes, intake and exhaust; follow installation notes for compression releases and gasket use.
Fully assembled heads for '06–'16 stock crankcases. Large intake and exhaust valves, high-flow ports, and S&S® valve springs supporting up to 0.650" lift. Suited for touring and heavier bikes; check compatibility for models with compression releases.
- Electric compression release — opens with the start button, closes on release.
- Includes compression assembly, Deutsch connector, orange wedge, vinyl tube, and silicone cap.
- Special socket available separately for easier installation and removal.
- Not for use on OEM heads.
- Made in the U.S.A.
Fully assembled cylinder heads with large 1.940" intake and 1.575" exhaust valves for improved low- and midrange performance.
Deckable to 0.060" to raise compression; supports cams up to .650" lift; compatible with stock rocker boxes and manifolds.
Replacement kit includes cylinders, forged pistons, rings, wrist pins, and gaskets; only for 88" motors. Professional assembly and clearance checks required.
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 cylinder and piston replacement kit for 80" Shovelhead engines that preserves stock compression; includes pistons, cylinders, rings, gaskets and mounting hardware. Made in USA.
Complete big-bore cylinder and piston kit with forged pistons, gaskets, and hardware; ideal for stroker engine builds. Made in the U.S.A.
Bolt-in big bore kit with cast ductile iron sleeves for improved heat transfer. Complete kit includes cylinders, forged pistons, rings, pins, clips and gaskets. Not for use with S&S 79cc heads.