Availability
S&S Cycle offers several Super Stock cylinder heads to choose from for your motorcycle. They feature premium valves and high flowing ports to supply your engine with plenty of air, as well as high performance valve springs that may allow installation of cams with up to .650 in. of lift (depending upon cylinder heads chosen). Super Stock cylinder heads are also available in different finishes. Select the ones designed for your bike.
Not Yet Reviewed
$1,428.26
S&S Cycle 124 in. (standard compression) Hot Set-Up cylinder kits package pistons and cylinders for use as replacements or as the basis for a new engine build. The pistons are a flat dome design, and the cylinders are machined with the stock bolt pattern intended for use in stock crankcases. Select the appropriate kit for your Big Twin. S&S cylinder and piston kit contents and notes: * S&S 4 1/8 in. bore cylinders -- Durable wrinkle black powdercoat finish * Forged flat domed pistons, rings, wrist pins * Head and base gaskets * Designed for 4 5/8 in. flywheels, resulting in 124 in. displacement * Cylinders can be used with stock or S&S cylinder heads with stock bolt pattern
Not Yet Reviewed
$1,381.46
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$1,599.95
S&S Cycle Late Twin cam chain drive cam chest upgrade kits contain everything needed to replace it all! Your engine will receive increased performance from the higher lifts, optimized camshaft timing, and from more consistent oil flow and pressure. Kits can be installed without the removal of your rocker box covers. They're available for a variety of Harley-Davidson© street bikes from 2006 and up. Kit components include: * Forged cam plate * Forged 3-stage oil pump * Premium lifters * Hydraulic chain tensioners * Quickee pushrods * Pushrod tubes * Chain drive camshafts * Inner camshaft bearings * All necessary gaskets, O-rings, and hardware
Not Yet Reviewed
$1,079.96
S&S Cycle Super Stock cylinder head kits feature stock-appearing cylinder heads with improved performance. These heads work well with engines of stock displacement but are ideal for engines with a little larger stroke or bore. They are compatible with stock rocker boxes, intake manifolds, and exhaust. The S&S high-performance valve springs allow for camshafts with larger lifts. Super Stock aluminum cylinder head kits are available in multiple finishes depending on application and they contain all the parts needed for installation except where noted.
Not Yet Reviewed
$1,398.56
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$1,551.56
S&S Cycle early Twin Cam chain drive cam chest replacement kits are designed to upgrade your early 1999-2006 Twin Cam to 2007-16 style camshafts and oil pump. Your engine will receive increased performance from the higher lifts, optimized camshaft timing, and from more consistent oil flow and pressure. Kits can be installed without the removal of your rocker box covers. Order the kit recommended for your specific Harley-Davidson© street bike. Kit components include: * Forged cam plate * Forged 3-stage oil pump * Premium lifters * Hydraulic chain tensioners * Inner and outer camshaft bearings * Quickee pushrods * Pushrod tubes * Available with or without chain drive camshafts * All necessary gaskets, O-rings, and hardware
Not Yet Reviewed
$1,499.95
S&S Cycle 107 in. big bore kits are easy to install and require no machining or re-balancing. These are the largest bores that can be fit in your stock engine case. This is the largest bore that can be fit in a stock engine case. Stock engine height is maintained so there are no manifold or frame fitment issues. Using an 11-fin design, the pre-finished cylinders closely resemble the OEM shape and are ready to install. Take your stock engine case as big as it'll go with S&S Cycle 107 in. big bore kits! Product features include: * CP pistons feature a 3cc pop-up dome for slightly higher compression * Cylinders feature an increased fin area for better heat dissipation * Centrifugal cast gray liner features 40,000 psi tensile strength for superior wear and performance
Not Yet Reviewed
$1,175.36
Upgrade your entire cam chest with S&S Cycle Milwaukee 8 chain drive cam chest kits! The parts in each kit are matched to ensure superior quality, fit, finish, and performance, and will include the necessary gaskets, components, and hardware required for a complete installation. S&S Cycle chain drive kits are available for water-cooled and oil-cooled motorcycle models. Select the kit designed to fit your bike. Features of Milwaukee 8 chain drive cam chest kits: * Oil pump and cam plate are precision-machined from billet aluminum with a blue anodized finish * Passage plugs are removable for servicing * Independent scavenge sections for the flywheel cavity and cam chest * Debris screens in both scavenge pickups * Magnet in cam helps stop debris from entering oil pump * Increased oil flow capacity on both the feed and scavenge sides * Adjustable pressure relief valve is adjustable with the unit installed in the engine * S&S Quickee pushrods with chrome or gloss black pushrod tubes * S&S premium tappets—hand assembled to exacting tolerances; reduced valve train noise from start up to shut down * Billet aluminum tappet cuffs have a hard-anodized black coating and are stronger than stock to eliminate distortion and improves tappet stability in high-lift situations * Precision machined billet aluminum cam chain tensioner * 465 Torque cam kits are the ideal choice for Touring bike applications * 475 kits are bolt-in cams that can produce up to 100 horsepower * 540 kits are designed to add even more stump pulling torque to your big bore M8, for those that keep the revs below 6,000 rpm—requires the addition of valve springs (included in high lift kits) and works with cams up to .605 lift * 550 kits are for use with large displacement engines—requires the addition of valve springs (included in high lift kits) and works with cams up to .605 lift
Not Yet Reviewed
$1,499.95
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$1,580.95
Inspired by S&S Pro Stock drag race engines, S&S Cycle 4 in. Sidewinder big bore kits utilize a ductile cast iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. These bolt-in kits do not require machining, re-balancing, or engine removal, and include just about everything you'll need to complete the installation. S&S Cycle 4 in. Sidewinder kits offer the biggest cylinder bore that can be installed in a stock crankcase without machining! Features: * Low-friction ductile cast iron liner * 10.5:1 compression * Bolts in with no machining, balancing, or splitting the crankcases * 88 in. engines are boosted to 100 in. * 96 in. and 103 in. engines are boosted to 110 in. * Complete kits include cylinders, pistons, gaskets, and instructions * Wrinkle black and silver cylinders that match stock finish
Not Yet Reviewed
$1,395.86
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$1,435.46
S&S Cycle 97 in. big bore kits will increase the displacement of 88 in. engines to 97 in., are easy to install, and require no machining or re-balancing. Using an 11-fin design, these pre-finished cylinders closely resemble the OEM shape and are ready to install. Order an S&S Cycle 97 in. big bore kit—and take your stock engine case as big as it'll go! Features of the S&S Cycle 97 in. big bore kits: * The 97 in. big bore kits for 88 in. motors yield excellent results with stock cylinder heads * Feature the same silver or black wrinkle powder-coat as stock, so they match the stock finish of the engine * Specifications: 3.927 in. bore, 4 in. stroke, 97 in. displacement, and 9.7:1 compression ratio with stock heads (9.3:1 compression ratio with S&S 89cc heads or 10.7:1 with S&S 79cc heads) * Feature the largest bore (3.927 in.) that can safely be used in a cylinder with stock spigot diameter * Included S&S cylinders feature a much stronger cast iron liner to stand up to the added power * Easy installation: no need to bore or split existing cases, just swap the cylinders *Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust) * For best performance, appropriate camshafts, performance air cleaner, performance exhaust and fuel system tuning is required
Not Yet Reviewed
$1,065.56
S&S Cycle Super Stock alternator-style crankcases are perfect for stock replacement and high performance applications. Available in stock and different bore sizes, some are machined for the installation of a crank position sensor, but all are compatible with stock flywheel assemblies, primary covers, gear covers, and are clearanced for 38 amp alternator stators. Certain options may include the required hardware, fittings, and bearings, and may be offered in different finishes. Select the S&S Super Stock alternator-style crankcase designed for your motorcycle's engine.
Not Yet Reviewed
$1,456.16
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$1,483.16
S&S Cycle 98 in. big bore kits are a fantastic upgrade if your Harley® is just a bit tired. The thicker and beefier cylinders mean that the engine will run cooler and you'll love the forged pistons that come with the kits. These are the largest bores that can be fit in your stock engine case. The cylinder and piston kits make going to the max bore size easy. There is no machining required and stock engine height is maintained. These kits come with nearly everything needed to get the most out of the added cu. in. to your stock engine. You won't believe how much power these kits produce! Features and specifications: * Kit yields excellent results with stock cylinder heads * Easy installation—no need to bore or split existing cases, just swap the cylinders * Available in a choice of either black or silver powdercoat finish with polished fins * Increased fin area for better heat dissipation * Valve pocket recessed in S&S pistons are enlarged for oversize valves and higher lift cams
Not Yet Reviewed
$1,187.06
Inspired by S&S Pro Stock drag race engines, S&S Cycle 124 in. big bore kits utilize a ductile cast iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. These bolt-in kits do not require machining, re-balancing or engine removal, and include just about everything you'll need to complete the installation. S&S Cycle 124 in. big bore kits are available in wrinkle black or wrinkle black with highlighted finned cylinders. Transform your stock engine into a 124 in. monster with the installation of a 124 in. big bore kit from S&S Cycle! S&S Cycle 124 in. big bore kit features: * Available for 107 M8 models * 107 to 124 in. big bore kit * Bolt-on kit * Includes gaskets and hardware required for installation * 4.250 in. bore * Forged Pistons * 11:1 compression ratio
Not Yet Reviewed
$1,405.76
S&S Cycle Milwaukee 8 gear drive cam chest kits include everything necessary to convert to gear drive for improved cam timing accuracy and eliminate the stock cam chain tensioner. All parts in each kit are matched to ensure superior quality, fit, finish and performance. Each kit includes necessary gaskets, components, and hardware required for a complete installation. S&S gear drive kits are available for water-cooled and oil-cooled motorcycle models. Select the kit designed for your bike. Features of Milwaukee 8 gear drive cam chest kits: * Oil pump and cam plate are precision-machined from billet aluminum with a blue anodized finish * Passage plugs are removable for servicing * Independent scavenge sections for the flywheel cavity and cam chest * Debris screens in both scavenge pickups * Magnet in cam helps stop debris from entering oil pump * Increased oil flow capacity on both the feed and scavenge sides * Adjustable pressure relief valve is adjustable with the unit installed in the engine * S&S Quickee Pushrods with chrome or gloss black pushrod tubes * S&S premium tappets—hand assembled to exacting tolerances; reduced valve train noise from start up to shut down * Billet aluminum tappet cuffs have a hard-anodized black coating and are stronger than stock to eliminate distortion and improve tappet stability in high-lift situations * Outer drive gears included * 465 Torque cam kits are the ideal choice for Touring bike applications * 475 kits are bolt-in cams that can produce up to 100 horsepower * 540 kits are designed to add even more stump pulling torque to your big bore M8, for those that keep the revs below 6,000 rpm—requires the addition of valve springs (included in high lift kits) and works with cams up to .605 lift * 550 kits are for use with large displacement engines—requires the addition of valve springs (included in high lift kits) and works with cams up to .605 lift
Not Yet Reviewed
$1,599.95
S&S Cycle 131 in. big bore kits are aimed at the Milwaukee Eight platform for 2017 and newer big twins—and open up a whole new level of performance for these engines. When paired with an S&S 4.625 in. stroker flywheel (sold separately), engine will be a true 131cubic inches. S&S builds their big bore kits and cranks to much tighter tolerances and with higher quality materials than the factory parts. If you're the proud owner of a Harley-Davidson® Milwaukee Eight big twin and have been waiting for just the thing to boost your M8's power—the wait is over! The S&S Cycle piston/cylinder kits will be a solid platform for massive power! Features and benefits: * Huge displacement increase means huge power increase * Bolt-on kit works with stock crankcases * 4 1/4 in. bore cylinders with a new 11:1 forged piston design * Original engine serial numbers are retained * Powdercoat finish match factory finish, giving the bike a "sleeper" advantage * Includes .045 in. multi-layered steel head gaskets * Retains stock engine height * Includes 131 in. Cam Cover Badge * Available with or without highlighted fins Note: This kit must be used with S&S Cycle stroker flywheels to achieve 131 in. displacement (P/N: 320-0605, 320-0620).
Not Yet Reviewed
$1,403.96
S&S Cycle Early Twin Cam Easy Start gear drive camshaft kits offer more performance for less money, and more time to enjoy riding. The Easy Start kits allow your stock starter to start any engine and most can be used with stock valve springs. Plus, they are designed to greatly improve valve timing accuracy by eliminating timing chain lash. Twin Cam kits include cams with inner gears and installation kits. Installation doesn't take long and S&S offers many choices to meet your engine size and compression ratio. Here's an easier way to increase performance without emptying your wallet--S&S Cycle Early Twin Cam Easy Start gear drive camshaft kits.
Not Yet Reviewed
$1,070.95
An 883 to 1200cc Hooligan cylinder kit for a Harley-Davidson®, like the ones made by S&S Cycle, provides a significant increase in engine displacement, resulting in substantially more power and torque without requiring major engine modifications, making it a popular upgrade for riders seeking better performance on their Sportster 883, with benefits like increased horsepower—by boosting the engine size from 883cc to 1200cc, the Hooligan kit delivers a noticeable power gain, allowing for better acceleration and highway cruising capabilities. Typically these kits are designed as "bolt-on" upgrades, meaning they can be installed without needing extensive machining or engine rebalancing, making the process relatively simple and straightforward. Compared to a complete engine rebuild, a Hooligan kit is a cost-effective way to significantly improve your bike's power. When installing a Hooligan kit, it may be necessary to upgrade the clutch to handle the increased torque produced by the larger engine. Depending on the specific kit and your bike setup, you may need to adjust fuel injection mapping to optimize performance.
Not Yet Reviewed
$1,095.95
S&S Cycle offers Power Tune XTO mufflers for a variety of applications, including many Polaris and Honda© UTVs from 2015 and up. Welcome to the new world order of high performance exhaust for the SxS space! A high-flow stainless muffler body is combined with dual exits, each containing a removable spark arrestor as well as tunable inserts. Both sound and power can be adjusted by changing the inserts. Wide-open on the trails? Put the 2.25 in. inserts in and let it breathe. Rock crawling in Low? Replace the inserts with 1.375 in. for maximum torque. Additional tuning inserts are also available. Order the muffler recommended for your off-road machine. Additional product details: * Tuning inserts allow for easy sound and power adjustment * Improved power and torque * Dual outlet and stylized tips * Removable spark arrestors * 304 stainless steel construction * Meets J350 Forestry Standards * Use with or without factory rear cover * Muffler clears most aftermarket bumpers * Does not require ECU tuning
Not Yet Reviewed
$1,176.95
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$1,285.95
The S&S Cycle 80 in. stock bore cylinder kits for a Harley-Davidson® offers the benefit of maintaining the original engine characteristics while providing a reliable and readily available replacement option. Unlike "big bore" kits which enlarge the cylinder diameter to increase engine displacement and horsepower, a stock bore kit simply replaces worn cylinders with new ones of the same size. These stock bore cylinder kits are ideal for situations where you need to rebuild the engine without significantly altering its power delivery or overall performance, while still achieving a quality repair. If your Harley® engine needs a rebuild due to wear and tear, the S&S Cycle 80 in. stock bore cylinder kits are a good choice to restore the engine to its original functionality. Select the S&S Cycle big bore kit specifically designed for your HD® model and year.
Not Yet Reviewed
$1,121.95
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$1,195.95
The S&S Cycle 128 in. big bore kits are for Harley-Davidson® Milwaukee Eight engines to allow you to upgrade your M8 motor to the largest bore size possible—and without required machining of your cases. So ... go big or go home! These upgrade kits are as simple as big power gets! S&S Cycle 128 in. big bore kit features: * 114 in. to 128 in. big bore kit * Bolt-on kit, the largest cylinder bore possible without requiring machining of the crankcases * Cylinders are constructed from premium aluminum castings wit cast-in iron liners * Wrinkle black finish in highlighted and non-highlighted fin versions * Easy installation; no need to bore or split existing cases—just swap the cylinders! * 4.250 in. bore, 4.500 in. stroke * Forged pistons * 11:1 compression ratio * All necessary gaskets and hardware required for installation included
Not Yet Reviewed
$1,403.96
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$1,405.76
Why put your bike engine back together with stock parts—when you can upgrade with one of the S&S Cycle flywheel assemblies? These 3-piece units are forged and heat-treated from 4140 steel, making them harder and stronger than stock. They're precision-machined to be truer (for less vibration), and are assembled with integral mainshafts and lightweight connecting rod forgings. Stock flywheels shift out of true under heavy loads; improve your motorcycle with an S&S Cycle flywheel assembly.
Not Yet Reviewed
$1,395.86
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$1,542.56
S&S Cycle's 111 in. Hot Set Up kits are tailored with the necessary components for your specific Harley-Davidson® model. Using this kit on the stock crankcases provides the benefit of significantly increasing your engine displacement and horsepower without requiring a complete engine rebuild. This allows you to maintain your original engine serial numbers while experiencing noticeable performance gains with a relatively simple installation process, all while utilizing your existing crankcases which can be cost-effective compared to a full engine replacement. After installation, proper tuning on a dyno is recommended to optimize engine performance.
Not Yet Reviewed
$1,534.95
S&S Cycle 106 in. big bore kits will increase the displacement of 95 in. engines to 106 in., are easy to install, and require no machining or re-balancing. Using an 11-fin design, these pre-finished cylinders closely resemble the OEM shape and are ready to install. Order an S&S Cycle 106 in. big bore kit—and take your stock engine case as big as it'll go! Features of the S&S Cycle 106 in. in. Big Bore kits: * The 106 in. big bore kits yield excellent results with stock cylinder heads * Feature the same silver or black wrinkle powder-coat as stock, so they match the stock finish of the engine * Specifications: 3.927 in. bore, 4 3/8 in. stroke, 106 in. displacement, and 10:1 compression ratio with stock heads (9.7:1 compression ratio with S&S 89cc heads) * Feature the largest bore (3.927 in.) that can safely be used in a cylinder with stock spigot diameter * Even though stock cylinders can be bored to fit the 3.927 in. pistons, the included S&S cylinders feature a much stronger liner to stand up to the added power * Easy installation: no need to bore or split existing cases, just swap the cylinders * Kits include cylinders, pistons, rings and gaskets (head, base and exhaust) * For best performance, appropriate camshafts, performance air cleaner, performance exhaust and fuel system tuning is required
Not Yet Reviewed
$1,065.56
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$1,274.95
S&S Cycle 95 in. big bore kits will increase the displacement of 88 in. engines to 95 cu. in., are easy to install, and require no machining or re-balancing. Using an 11-fin design, these pre-finished cylinders closely resemble the OEM shape and are ready to install. Order an S&S Cycle 95 in. big bore kit to take your bikes stock engine case as big as it'll go! S&S Cycle 95 in. big bore kit features: * Increases Twin Cam displacement from 88 in. to 95 in. with this S&S kit * Forged piston weight is virtually identical to stock, so no rebalancing is necessary * No crankcase machining required * Features the same silver or black wrinkle powder-coat as stock, so they match the stock finish of the engine * Compatible with either OEM or S&S Cycle Super stock heads * Big bore 3 7/8 in. cylinders * 9.7:1 compression ratio with stock heads * Includes cylinders, pistons, rings, and gaskets required for installation
Not Yet Reviewed
$1,120.46
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$1,131.26
S&S Cycle 117 in. big bore kits are a popular choice for riders looking to upgrade their engine power without major modifications. Available for a variety of Harley-Davidson® motorcycles, each kit is tailored with the necessary components for your specific HD® model. Many kits come with a powdercoat finish that can match the stock engine look to maintain a clean aesthetic. Using one of S&S Cycle's big bore kits can provide significant benefits like a noticeable increase in horsepower and torque due to the larger engine displacement, relatively easy installation with minimal machine work required, a quality build with durable components, and a good balance of performance and reliability. For best performance, appropriate camshafts, performance air cleaner, performance exhaust and fuel system tuning are required. Although not mandatory, S&S Cycle recommends adding an oil cooler to bikes ridden in warmer climates. Select the S&S Cycle big bore kit designed for your application needs.
Not Yet Reviewed
$1,595.95
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$1,599.95
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