All Products

High-quality gasket kits. Top-end gasket kits do not include rocker box gaskets (must be purchased separately). Made in the U.S.A.

Replacement gear cover gasket.

Muffler bodies measure a full 4.5" OD with premium fit, finish, sound and power. Unique louvered baffle delivers a more aggressive tone, even with stock head pipes. Features S&S racing heritage-styled end caps with a black tuxedo finish. SAE J2825 Sound Level Compliant (with included dB reducer installed); dB reducer is removable.

Free-flow design equals solid hp gains with a hidden crossover providing performance benefits of a 2-into-1 system. Features full heat shields on both front and rear header pipes, stainless steel header construction, and race inspired Grand National end caps. Removable dB reducers included.

Adds a high-performance look and feel that recalls the earlier days of performance Sportster models. 4 1/2" OD muffler body with a black finish and Grand National Thruster machined end cap. Removable dB reducer.

Improved horsepower and torque (when used with Stealth Air cleaner). Race-inspired design that meets J2825 levels for sound. Deep-performance rumble replaces stock whisper tone. No mapping required.

Head gaskets are made from fiber-reinforced premium graphite material with a steel core, stainless steel fire ring and anti-stick coating (unless noted). Base gaskets feature S&S Pro-Formance micropore compound proven to resist failure due to extrusion or blow out. Made in the U.S.A.

High-strength final drive belts made of super-strong Gates Carbon X3N material. Available with 14 mm pitch.

Steel construction hinged P-clamp kit for crossover exhaust. Sold as a kit.

Bolt-on big bore kits mean easy installation with no machining and no rebalancing. S&S bolt-in cams and premium tappets make the most of the added displacement. Cams are 0.482" lift and 240 deg duration intake / 234 deg duration exhaust. Compression ratio 9.6:1 for 1200 kits and 11.2:1 for 1250 kits. Uses stock heads, pushrods and fuel system.

Blocks off the hydraulic cam chain tensioner holes when using gear-driven cams. Made in the U.S.A.

For jetting most stock and performance engines. Dealer jet kit contains three each of all intermediate jets and five each of all main jets plus a main jet tool. Master and range-specific kits available.

Specially designed for S&S headbolts. Magnets hold covers in place; no setscrews needed. Chrome finish. Sold in sets of four. Made in the U.S.A.

85% of original size for perfect proportions; all laid over the easy-to-install Stealth Air Cleaner system. Iconic look with machined openings around the rim for style and additional airflow. Kits include backing plate, filter and hardware. Built-in stinger cone directs air smoothly into the bore of the carburetor or EFI throttle body and reduces...

Complete crate engine, fully assembled. Features high-flow cylinder heads with premium valves, valve seats, guides, springs, and seals. Intake and exhaust valves are +1 mm oversized and 0.030" longer than stock for improved valve train geometry. Includes 0.605" lift valve springs, gear-drive cam, high-strength alloy cylinder heads, enlarged...

Precision-machined from billet aluminum with independent scavenge sections for the flywheel cavity and the cam chest. Features debris screens in both scavenge pickups, magnet in the cam chest, increased oil flow capacity, and adjustable pressure relief valve. Made in the U.S.A.

Steel individual parallel key, 0.188" x 0.150" x 0.420".

Largest big bore kits available without doing crankcase mods. Includes S&S 4" big bore cylinder kit with 10.5:1 pistons, S&S 585 easy start cams, Quickee Pushrods, premium hydraulic tappets, and TC3 cam support plate/oil pump.

For O-ring style bottom cover. Includes all parts for four pushrods: top, middle and bottom O-rings.

Various engine and transmission seals. Made in the U.S.A.

High-performance conical single wire valve springs. Include springs, keepers, top collars, bottom collars and seals. For valve lift to 0.605" with 1.535"/68 lbs. installed height, 264 lbs. at max lift. Max 6500 rpm. Made in the U.S.A.

Includes springs, upper and lower collars and keys. For valve lift to 0.650" with 1.860"/178 lbs. installed height, 376 lbs. at max lift. Max 6500 rpm. Made in the U.S.A.

System features the mirror finish of traditional chromium combined with a smoky radiance that produces a unique dark look that is still reflective. Finish is durable and easy to clean. Features stainless steel stepped header pipes, machined aluminum end cap, and increased power and torque.

Classic slash-cut styling that boosts horsepower and torque. Removable dB reducer. SAE J2825 Sound Level Compliant. S&S engineered high-flow cats perform as well as many catalyst-free 'race only' mufflers.

Available for 89cc/91cc and 79cc cylinder heads. 89cc/91cc heads use 2.000" intake and 1.605" exhaust. 79cc heads use 1.940" intake and 1.575" exhaust. Made in the U.S.A.