550" lift double valve spring kit for 1948-'84 Harley-Davidson® panhead and shovelhead engines.
Includes 4 inner springs, 4 outer springs, and 4 aluminum top collars.Use with stock-style bottom collar, valve guides, valves with stock 3/8" stem, and stock keepers.Compatible with thin-stem valves ..
.590" lift triple valve spring kit for late 1981-1984 Harley-Davidson® big twin models.
Includes 4, steel top collars, 4 bottom collars, 4 each outer, middle, and inner springs, shims, and 8 keepers.Use with stock valve guides, stock valves with 3/8" stem, and stock keepers.Compatible with thin-..
Sidewinder® .650" Valve Spring Kits for Twin Cam 88® big twins w/ stock heads (both 7mm and 5/16” valve stems) and all S&S Super Stock® heads (5/16” valve stems). Works well with cams up to .650" lift. Manufactured from ultra clean high silicon Kobe alloy wire then micro ..
The 100" Power Package is the ideal combination of performance and savings to transform your Twin Cam HD without breaking the bank. Bump the early Twin Cam from 88ci to 100ci as well as adding matched cams/cam plate/oil pump and everything else a high performance cam chest needs to reliably make big..
These big bore pistons work with the stock 4-3/8" stroke flywheels to convert any 2007-'16 HD® big twin engine from 96" or 103" to 106" displacement with 10:1 compression with stock heads. Stock cylinders may be bored to accomodate larger pistons, but we recommend S&S 3.927" bore cylinders w..
These big bore pistons work with the stock 4-3/8" stroke flywheels to convert any 2007-'16 HD® big twin engine from 96" or 103" to 106" displacement with 10:1 compression with stock heads. Stock cylinders may be bored to accomodate larger pistons, but we recommend S&S 3.927" bore cylinders w..
These forged 3-7/8" bore stroker pistons for 1999-'16 HD® big twin are required for the S&S 106" stock bore stroker kit with 4-1/2" stroke flywheels. They are compatible with stock or S&S® Super Stock® cylinder heads. Stock 88" cylinders may be bored to fit these pistons, or S&am..
These forged 3-7/8" bore stroker pistons for 1999-'16 HD® big twin are required for the S&S 106" stock bore stroker kit with 4-1/2" stroke flywheels. They are compatible with stock or S&S® Super Stock® cylinder heads. Stock 88" cylinders may be bored to fit these pistons, or S&am..
These forged 3-7/8" bore stroker pistons for 1999-'16 HD® big twin are required for the S&S 106" stock bore stroker kit with 4-1/2" stroke flywheels. They are compatible with stock or S&S® Super Stock® cylinder heads. Stock 88" cylinders may be bored to fit these pistons, or S&am..
These low compression 3-1/2" bore forged stroker pistons for 1984-'99 HD® big twins are a low compression option for 89" stroker kits for 1984-'99 with 4-5/8" stroke flywheels and S&S® Super Stock heads. 10.5:1 compression . +.010"...
Stock bore stroker kits have always been an economical way to increase the displacement of your engine. Installation of this kit does not require any special machining, other than fitting the pistons. S&S stroker pistons, which are sold separately, are available in all standard oversizes. Stock ..
Stock bore stroker kits have always been an economical way to increase the displacement of your engine. Installation of this kit does not require any special machining, other than fitting the pistons. S&S stroker pistons, which are sold separately, are available in all standard oversizes. Stock ..
This bolt-in big bore kit is easy to install, and requires no machining or rebalancing. This is the largest bore (3.937") that can be fit in a stock engine case. Stock engine height is maintained so there are no manifold or frame fitment issues. The S&S 11 fin cylinder design closely resembles O..
Displacement Covers for our Stealth Air Cleaner line are CNC engraved into the cross-bar. The machined displacement looks killer against the gloss black powder coat finish of the cover and anybody who sees it’ll know better than to mess with a guy with that many cubic inches...
S&S 111" Displacement Covers for our Stealth Air Cleaner line are CNC engraved into the cross-bar. The machined displacement looks killer against the gloss black powder coat finish of the cover and anybody who sees it’ll know better than to mess with a guy with that many cubic inches...
This big bore cylinder and piston kit contains S&S 4-1/8" bore cylinders and forged flat topped pistons, rings, wrist pins, head and base gaskets. The cylinders are machined with the stock bolt pattern and are intended for use in stock crankcases of 2007-'17 big twin except 2017 touring engines...
Fits: 1999-'18 HD® Twin Cam 88®/96™/103™ , 2017-Up M8 and all X-Wedge®. The most important thing you can do to maximize the life of your engine is to keep your oil clean. Friction wear particles and combustion by products that are picked up by your motor oil. Regular oil chan..
Fits: 1984-'99 HD® Evolution®, 1986-'16 HD® Sportster®, and 1991-'02 Buell®. Captures smaller particles than stock filters. Low restriction to oil flow Direct bypass - bypass oil does not pass over dirty filter media. Smaller diameter for easier installation -12 pack of Black Fil..
Fits: 1999-'18 HD® Twin Cam 88®/96™/103™ , 2017-Up M8 and all X-Wedge®. The most important thing you can do to maximize the life of your engine is to keep your oil clean. Friction wear particles and combustion by products that are picked up by your motor oil. Regular oil chan..
Fits: 1984-'99 HD® Evolution®, 1986-'16 HD® Sportster®, and 1991-'02 Buell®. Captures smaller particles than stock filters. Low restriction to oil flow. Direct bypass - bypass oil does not pass over dirty filter media. Smaller diameter for easier installation. -12 pack of Chrome ..
S&S 111" Displacement Covers for our Stealth Air Cleaner line are CNC engraved into the cross-bar. The machined displacement looks killer against the gloss black powder coat finish of the cover and anybody who sees it’ll know better than to mess with a guy with that many cubic inches...
Displacement Covers for our Stealth Air Cleaner line are CNC engraved into the cross-bar. The machined displacement looks killer against the gloss black powder coat finish of the cover and anybody who sees it’ll know better than to mess with a guy with that many cubic inches...
This big bore cylinder and piston kit can be used as replacement for the cylinders and pistons for an S&S 124" Hot Set Up Kit, a T124 T2 engine or as the basis for a new engine build. Kit contains S&S 4-1/8" bore cylinders and forged 10cc dished dome pistons, rings, wrist pins, head and base..
This big bore cylinder and piston kit can be used as replacement for the cylinders and pistons for an S&S 124" Hot Set Up Kit, a T124 T2 engine or as the basis for a new engine build. Kit contains S&S 4-1/8" bore cylinders and forged flat dome pistons, rings, wrist pins, head and base gasket..
This big bore cylinder and piston kit can be used as replacement for the cylinders and pistons for an S&S 124" Hot Set Up Kit, a T124 T2 engine or as the basis for a new engine build. Kit contains S&S 4-1/8" bore cylinders and forged flat dome pistons, rings, wrist pins, head and base gasket..