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S&S Cycle Head Bolt Kits

With S&S Cycle's wide selection of Harley-Davidson® parts, you're sure to find the parts you're looking for, including head bolt kits. These kits include steel 12-point head bolts and washers that are designed to exceed the needs of your high performance engine.

5.0 out of 5 stars ( 1 )

$224.95

S&S Cycle Super Stock Cylinder Head Kits

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

$1,995.95

S&S Cycle Late Twin Cam Easy Start Chain Drive Cam Chest Upgrade Kits

S&S Cycle Late Twin Cam Easy Start 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. Easy Start kits allow the stock starter to start any engine regardless of compression ratio! Order the kit recommended for your particular Harley-Davidson© street bike. Kit components include: * Forged cam plate * Forged 3-stage oil pump * Premium lifters * Hydraulic chain tensioners * Quickee pushrods * Pushrod tubes * Easy Atart chain drive camshafts * Inner camshaft bearings * All necessary gaskets, O-rings, and hardware

Not Yet Reviewed

$2,025.95

S&S Cycle 883 to 1200cc Hooligan Cylinder Kits

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

$1,822.95

S&S Cycle 107 in. Big Bore Kits

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

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$1,345.95

S&S Cycle Standard Forged Rocker Arms

S&S Cycle standard forged rocker arms are designed for superior strength and to eliminate the failure-prone stress areas found in other rockers. These replacement arms are forged from 8620 steel, heat-treated, and then shot-peened for additional strength. They feature 3/4 in. long bronze bushings, compared to the more common 1/2 in. long bushings or needle bearings. S&S Cycle roller arms are available in the stock 1.625:1 ratio and 1.725:1 ratio. Order the set recommended for your bike model.

Not Yet Reviewed

$334.95

S&S Cycle Heavy-Duty Valve Spring Kits

S&S Cycle offers heavy-duty valve spring kits to upgrade your bike's performance—so you don't have just another "me too" motorcycle. Order the S&S Cycle heavy-duty valve spring kit designed for your bike's application. Features and specifications: * Available for M8 2017-2024 Harley-Davidson® models * Kit includes springs, top collars, keepers, valve seal/bottom collars * Works well with cams up to .605 in. lift * High performance conical single wire spring

Not Yet Reviewed

$395.95

S&S Cycle Quickee Adjustable Pushrods

Easily installed, easily removed--S&S Cycle Quickee adjustable pushrods are designed for a simple, trouble-free installation that does not require removal of the gas tank, rocker assemblies, or even the rocker box cover! Innovative Quickees feature threaded adjusters that screw into the pushrods until the threads disengage and the adjuster simply slides into the pushrods, making your installation or removal easy. Then, once the pushrods are installed and adjusted, the locknut keeps the adjuster from moving. They will work with stock and aftermarket cams, as well as stock pushrod covers. S&S proven performance makes life easier with their Quickee adjustable pushrods.

1.0 out of 5 stars ( 1 )

$209.95

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$336.95

S&S Cycle Late Twin Cam Easy Start Chain Drive Camshaft Kits

S&S Cycle Late Twin Cam Easy Start chain drive camshaft kits offer more performance for less money and more time to enjoy riding. These S&S camshaft kits allow your stock starter to start any engine. Plus, some kits reuse stock components and can be used with stock valve springs. Most Easy Start kits include the cams, gear cover gasket, cam bearings, and instructions. 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 Late Twin Cam Easy Start chain drive camshaft kits.

Not Yet Reviewed

$540.95

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$549.95

S&S Cycle Inner Cam Gears

S&S Cycle offers inner cam gears for a variety of Harley-Davidson© street bikes from 2006 and up. This is the gear located on the inside of a camshaft, directly connected to the camshaft itself. It's responsible for transferring rotational motion from the timing belt or chain to the camshaft, allowing it to open and close the engine valves at the correct timing. Essentially, an inner cam gear is the primary gear on the camshaft that engages with the timing system to rotate the camshaft properly. These OE-style replacements are manufactured from factory materials and specifications to ensure proper fitment and long-lasting performance.

Not Yet Reviewed

$152.95

S&S Cycle Late Twin Cam Chain Drive Camshaft Kits

S&S Cycle Late Twin Cam chain drive camshaft kits are an affordable way to increase performance. These S&S camshaft kits allow you to reuse many stock cam drive components, saving you money on parts. Complete kits include the cams, gear cover gasket, cam bearings, and instructions. Go with the less expense and more performance of S&S Cycle Twin Cam chain drive camshaft kits.

Not Yet Reviewed

$399.95

S&S Cycle M8 Oil Pump and Cam Plate Kits

S&S Cycle offers M8 oil pump and cam plate money-saving kits for a variety of Harley-Davidson© street bikes from 2017 and up. They're available for oil-cooled or water-cooled Touring models. The units are precision-machined from billet aluminum with a blue anodized finish—and include independent scavenge sections for flywheel cavity and cam chest. Additional details: * Debris screens in both scavenge pickups * Magnet in cam chest to help prevent debris from entering pump * Increased flow capacity on both feed and scavenge side * Adjustable pressure relief valve can be adjusted with unit in engine * Passage plugs are removeable for servicing * Water-cooled model 310-0997B: 44 percent flow increase on supply side and 58 percent flow increase on scavenge * Oil-cooled model 310-0998B: 20 percent flow increase on supply side and 52 percent flow increase on scavenge

Not Yet Reviewed

$836.95

S&S Cycle Milwaukee 8 Chain Drive Cam Chest Kits

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

$1,721.95

S&S Cycle M8 Big Bore Cylinders

S&S Cycle M8 big bore cylinders are bolt-on sets for Milwaukee 8 models. They are available in a Wrinkle Black finish with or without highlighted fins. Select the set you would like.

Not Yet Reviewed

$682.95

S&S Cycle M8 131 in. Big Bore Kits

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

$1,559.95

S&S Cycle Oil Filters

S&S Cycle oil filters are constructed out of a sturdy steel canister, which houses the finest filtering media and internal components available. The filter media has traps to catch the smallest particles possible but not restrict flow. The filters are available in a black or chrome finish to accent your ride properly. With S&S Cycle oil filters you'll keep your oil clean and your engine protected.

4.5 out of 5 stars ( 2 )

$183.95

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$288.95

S&S Cycle Milwaukee 8 Chain Drive Camshaft and Dynojet PV-3 Kits

S&S Cycle Milwaukee 8 chain drive camshaft and Dynojet PV-3 kits are the first of their kind, offering a 475 cam, tuner in chain drive, and true 100+ hp at the wheel in one package. The kits are designed to work specifically with S&S's Stealth air cleaner kits and Mk45 mufflers with a stock header or their Eldorado exhaust system. Features and benefits: * Bolt-in performance * No need for expensive dyno tuning * Display vehicle data channels in real-time * Weather-resistant for use in all conditions * High-contrast display, viewable in direct sunlight Please note: * PV-3 module is preloaded with calibrations developed by S&S. These calibrations are secure and do not allow for any modifications. * Calibrations do not work on any Harley-Davidson® Softail models. * Calibrations do not work on 2020+ Harley-Davidson® Touring Models.

Not Yet Reviewed

$628.95

S&S Cycle TC3 Cam Support Plates

S&S Cycle TC3 camshaft support plates are just what the doctor ordered when repairing a damaged engine or installing new camshafts. CNC machined from forged aluminum for excellent strength and dimensional accuracy. They feature bronze pinion shaft bushing in all models and bronze cam bushings in 2007-later style. Select the plate designed for your motorcycle. Note: S&S suggests new S&S oil pumps and chain tensioners be installed with new cam support plates.

Not Yet Reviewed

$395.95

S&S Cycle M8 124 in. Big Bore Kits

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

$1,643.95

S&S Cycle Hot Set-Up Piston and Ring Kits

S&S Cycle Hot Set-Up piston and ring kits include forged pistons, rings, wristpins, and clips. They are available in standard and oversized options for stock or S&S cylinder heads. Select the kit needed for your Big Twin setup.

Not Yet Reviewed

$617.95

S&S Cycle Roller Rocker Arm Complete Rebuild Kits

S&S Cycle roller rocker arm complete rebuild kits offer several benefits for Harley-Davidson® motorcycles, including significantly reduced friction on the valve stem, improved valvetrain longevity, increased horsepower potential, especially at higher rpm's, and smoother engine operation. These kits also offer better compatibility with high-lift cams due to the reduced wear and side load on the valve stem from the roller design; essentially providing better overall performance and durability compared to stock rocker arms. Order the rebuild kit designed for your HD® model. Features and benefits: * Complete kit includes roller tips, roller pins, roller pin retaining clips, and rocker arm bushings to rebuild a set of four S&S forged roller rocker arms * Designed using Finite Element Analysis (FEA) and forged from 8620 steel for strength * The roller design minimizes friction on the valve stem, leading to less wear and tear on both the valve stem and rocker arm, extending the lifespan of the valvetrain components * The roller bearings in the rocker arms distribute the load more evenly, leading to better wear resistance compared to traditional sliding contact on stock rockers * Roller rockers are designed to handle the increased valve lift associated with performance cams without excessive wear or stress on the valvetrain * Rocker geometry is better suited to high-lift camshafts * Bushings are longer than stock, increasing the time between rebuilds * The smooth rolling action of the roller bearings can contribute to a quieter engine operation * Compatible with stock or S&S CNC-machined heads * Many high-quality roller rocker arm kits are designed to be serviceable and rebuildable, allowing long-term use with proper maintenance Notes: When installing roller rockers, it's important to choose a camshaft that is compatible with the increased valve lift capability. Also, precise installation is crucial to ensure optimal performance and avoid potential issues.

Not Yet Reviewed

$167.95

S&S Cycle Camshaft Installation Kits

S&S Cycle camshaft installation kits are available for both chain and gear drive motorcycles. Depending on your specific model, your kits can include a gearcover gasket, cam bearings, retaining plate, and instructions. Imagine the headache if you had to research and locate each of these items; S&S Cycle has done the legwork for you! Just find the kit you need, and half of your installation battle is complete!

5.0 out of 5 stars ( 2 )

$49.95

S&S Cycle Milwaukee 8 Chain Drive Camshaft Kits

Tap into the power of your Milwaukee 8 engine by installing an S&S Cycle camshaft. These kits will increase the torque and horsepower of your bike. They include all required gaskets, O-rings, bearings, and hardware. Order the model recommended for your Harley-Davidson® application.

Not Yet Reviewed

$299.95

S&S Cycle Hydraulic Tensioner Oil Passage Block-Off Kits

S&S Cycle oil passage block-off kits are used to block oil passages in camshaft plate when hydraulic camshaft chain tensioners are removed to install gear drive cams. They will fit any cam plate designed for hydraulic tensioners. S&S hydraulic tensioner oil passage block-off kits are included in the cam installation kit, as well as conveniently offered separately as replacements.

Not Yet Reviewed

$16.95