HARLEY-DAVIDSON Engines & Components

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 )

$149.95

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$224.95

COMP Cams Twin Cam Thumpr Camshafts

COMP Cams twin cam Thumpr camshafts are designed as a serious performance upgrade with hard-hitting sound! They feature an aggressive design that provide a thumping exhaust note and they provide a great performance upgrade to any 103 cu. in. and larger twin cam engine. The cams feature a sophisticated "Endurance Ramp" lobe design that makes great power but is easy on the tappets and valve train for long life. They feature a wide power band and pull great up to 5,400 to 6,400 rpm dependent upon the camshafts selected, and engine combination. The cams are made from 8620 billet steel and have been shown to make greater gains in power, acceleration, and throttle response when tested with larger throttle bodies. Put more power to the ground, and make some noise with Comp Cams twin cam Thumpr camshafts.

5.0 out of 5 stars ( 1 )

$243.95

KB Performance V-Twin Piston and Ring Kits

KB Performance V-Twin piston and ring kits bring all of the knowledge and experience of a legendary engine builder to the world of high performance motorcycles. These pistons use the latest manufacturing techniques and standards to ensure quality and maximum available performance. The kits are offered in hypereutectic 390 alloy and forged 4032 low-expansion alloy. KB Performance V-Twin piston and ring kits are available for Harley-Davidson® and Indian motorcycles in a variety of engine sizes and compression ratios.

4.8 out of 5 stars ( 20 )

$150.12

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$221.29

S&S Cycle Standard Adjustable Pushrods

S&S Cycle standard adjustable pushrods help to assure consistent valvetrain operation under all conditions. The pushrods are made from rigid chromoly steel tubing and offer a simple, trouble-free installation. You can purchase just the pushrods or as a set with pushrod covers, O-rings, and cover keepers. Replace the stock, non-adjustable pushrods in your stock or high performance application with S&S Cycle standard adjustable pushrods, available for a wide range of Harley-Davidson® bikes from 1984 and up.

5.0 out of 5 stars ( 1 )

$152.95

COMP Cams V-Thunder Performance Replacement Lifters

COMP Cams V-Thunder performance replacement lifters feature a rigid nodular cast iron body with a 52100 bearing, axle, and wheel assembly for strength. They utilize an advanced ultra-high flow metering system that allows more oil movement through the engine to aid in cooling. Each lifter is precision I.D. ground, matched with a graded piston, and features a high-performance retaining ring. Keep your valvetrain stable with COMP Cams V-Thunder performance replacement lifters.

Not Yet Reviewed

$213.95

COMP Cams Twin Cam Camshafts

COMP Cams twin cam camshafts are designed as a performance upgrade, that offer more power with long valve train life. These camshafts provide a great performance upgrade to any 103 cubic inch and larger twin cam engine. The cams feature a sophisticated "Endurance Ramp" lobe design that makes big power but is easy on the tappets and valve train for long life. They feature a wide power band and pull great up to 5200 – 6200 RPM dependent upon the camshafts selected, and engine combination. The cams are made from 8620 billet steel for added strength and durability. Upgrade your camchest by installing a set of Comp twin cam camshafts.

5.0 out of 5 stars ( 6 )

$243.95

COMP Cams Evolution Magnum Hydraulic Roller Camshafts

COMP Cams Evolution magnum hydraulic roller camshafts are high performance camshafts designed for your Harley-Davidson®. They are constructed from superior-quality materials to bring the best possible performance to your ride. If you're looking to upgrade your Harley®, COMP Cams Evolution magnum hydraulic roller camshafts are must-haves.

5.0 out of 5 stars ( 1 )

$205.95

S&S Cycle Street Performance .585 Valve Spring Kits

S&S Cycle offers Street Performance .585 in. valve spring kits to upgrade your bike's performance—so you don't have just another "me too" motorcycle. Order the valve spring kit designed for your make and model. Features and specifications: * Available for fitment on a variety of Harley-Davidson® and Buell models * Kit contains springs, top and bottom collars, keepers, and shims * Accommodates camshaft lift to 0.585 inches * Suitable for high performance applications * Coil springs reduce the risk of valve float

Not Yet Reviewed

$163.95

COMP Cams V-Thunder Hy-Rev Lifters

COMP Cams V-Thunder Hy-Rev lifters were designed to handle the demand of today's high performance engines. These anti-pump-up lifters are produced on state-of-the-art computer controlled machinery which hold the tolerances to 0.003 in. for a precise fit. If you are looking to increase rpm capability and valvetrain stability, look no further then COMP Cams V-Thunder Hy-Rev lifters.

Not Yet Reviewed

$110.95

KB Performance V-Twin Powersports Piston and Ring Kits

KB Performance V-Twin powersports piston and ring kits bring all of the knowledge and experience of a legendary engine builder to the world of high performance motorcycles. Using the latest manufacturing techniques and standards to ensure quality and maximum available performance, the KB pistons are forged from 4032 aluminum alloy and are available for a wide range of Harley-Davidson® bikes, including 1948-1984 Shovelhead models. Select the size and other options recommended for your application needs.

Not Yet Reviewed

$182.24

Wiseco Tracker Series Pistons

Wiseco offers Tracker Series pistons for a variety of applications, including many Honda©, Kawasaki, KTM, Husqvarna, Gas Gas, Suzuki, and Yamaha off-road bikes and ATVs from 2006 and up. At the end of the day, it's all about the freedom riding gives us, which is why Wiseco believes the reliability and performance benefits of forged pistons shouldn't have to break the budget. Enter Tracker Series, a no-frills line of pistons for Harley-Davidson© engines designed to offer the forged strength Wiseco is known for at a mid-level price point. With multiple configurations available for different Harley© engine platforms, Tracker Series pistons will get you to the checkers. Additional product details: * Proprietary near-net forging technology reduces the amount of finish machining required, offering lower cost without sacrificing strength and longevity * ArmorFit skirt coating reduces operating friction and increases wear resistance for a better performing, longer lasting part * Supplied in kits containing pistons, rings, wrists pins, and circlips all under one part number * Ring sets include 3mm oil ring assembly, providing better oil control for consistent cylinder lubrication and reduced blow-by, resulting in improved durability and performance

Not Yet Reviewed

$122.99

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$241.99

COMP Cams High Performance Valve Spring Kits

Simplify your valvetrain assembly! COMP Cams high performance valve spring kits have everything that you need for a complete valve spring assembly. Springs and retainers are included, along with complete instructions for a worry-free installation.

4.68 out of 5 stars ( 34 )

$145.95

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$195.95

On Sale

Moroso PCV Air/Oil Separators

Moroso PCV air/oil separators will help increase your engine's performance. These air/oil separators will capture excess oil and keep it out of your intake tract so that your engine will breathe cleaner intake air--better air equals better performance. Moroso offers universal and custom fit versions in small and large body sizes. The large bodies, besides having more capacity, feature a bottom drain with an elbow that makes draining the collected oil virtually mess-free. Their polished billet aluminum bodies can be chromed, painted, or powdercoated. The small units offer a 2-piece body that unscrews for draining and are available raw or with polished or anodized finishes.

4.71 out of 5 stars ( 330 )

$258.99

$233.09

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

Kibblewhite Lightweight Racing Valve Spring Kits

Kibblewhite is dedicated to providing the best lightweight racing valve spring kits available. The folks at Kibblewhite have years of experience building the finest valvetrain products, and that experience has culminated in these lightweight valve springs. Each spring starts life as the finest quality super-clean, chrome-silicon wire that is wound to the most exacting standards. After the spring is wound, it goes through a rigidly controlled heat treatment, stress relief, and shot-peening process that ensures the longest lasting and strongest springs possible. These springs are perfect for today's high-revving motors, whether you are on the race track or the trail. Upgrade to these Kibblewhite lightweight racing valve spring kits today and stop worrying about when one of your stock springs is going to fail you.

Not Yet Reviewed

$142.97

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$147.47

Biker's Choice Oil Tank Dipsticks with Gauge

Biker's Choice oil tank dipsticks with gauge are available in analog with a 350 degree range and in digital styles. The digital dipsticks offer LCD display with blue backlight for viewing when dark, Celsius/Fahrenheit reads, automatic off, and overheat warning functions.

Not Yet Reviewed

$145.81

Accutronix Oil Filter and Voltage Regulator Mounts

Accutronix oil filter and voltage regulator mounts allow custom mounting on your bike for a clean, smooth look. These brackets are manufactured from 6061-T6 billet aluminum, and are available in your choice of black anodized, brilliant polished, and chrome finishes to complement your motorcycle. Order the Accutronix oil filter and voltage regulator mounts designed for your application.

Not Yet Reviewed

$114.26

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$123.79

S&S Cycle Cam Chain Tensioners

S&S Cycle offers you superior valve train control for your motorcycle with their cam chain tensioners. They provide a thicker shoe, a larger piston, direct chain oiling, and tighter tolerances for improved stability and longer wear life over the stock cam chain tensioners. Order the S&S cam chain tensioners designed for your bike.

Not Yet Reviewed

$109.95

S&S Cycle Non-Adjustable Pushrods

S&S Cycle offers non-adjustable pushrods for a wide range of Harley-Davidson Big Twin street bikes from the 1940s, '50s, '60s, '70s, and '80s. * Details for 1948-52 models: S&S solid lifter pushrod set for 1948-52 panhead engines. Converts stock 1948-52 valvetrain to solid lifter operation by replacing stock pushrods, which contain built-in hydraulic units with solid non-adjustable S&S pushrods. Requires stock 1948-52 style adjustable lifters. Includes four non-adjustable steel pushrods. Fits stock 74 in. engines with 5.330 in. cylinder length. Pushrods only. * Details for 1966-84 HD models: Non-adjustable pushrod kit. Requires 1948-'2 style adjustable lifters. Includes four non-adjustable steel pushrods. (Pushrods are identical to those used in kit P/N 93-4068.) Recommended for all shovelhead and shovelhead top/panhead bottom engines with 1948-52 style lifters. Fits stock 5.330 in. cylinders.

Not Yet Reviewed

$101.95

Kibblewhite High Performance Ovate Wire Valve Spring Kits

Kibblewhite developed these high performance ovate wire valve spring kits for to take full advantage of your high performance engine. Ovate wire springs distribute forces and heat more efficiently due to a larger surface area and are ideal for high-lift, bind-free performance due to their lower profile. Kibblewhite springs are wound from super-clean chrome silicon wire that is heat-treated and shot-peened to improve strength, durability, and consistency. These springs are available for a variety of lifts and seat pressures to help you find the perfect set for your project. Take full advantage of your ride's performance potential with these Kibblewhite high performance ovate wire valve springs.

Not Yet Reviewed

$184.99

Kibblewhite Tensilite Titanium Valves

Kibblewhite has developed these Tensilite titanium valves to cope with the stress of racings. These valves start life as a solid bar of premium titanium that is forged for the ultimate in strength. The stem is then pulled from the forging process and machined to tight tolerances to prevent premature fatigue or failure. After all of the machining and finishing is completed, Kibblewhite applies a hard titanium nitride shell to further increase the strength and longevity of the valves. To ensure the finest product available, Kibblewhite has lab-tested these valves and then put them through their paces in a variety of racing applications, from superbikes to dual-stage nitrous drag bikes. When the race is on the line and you need that extra edge, don't settle for anything but the best. Upgrade to these Kibblewhite Tensilite titanium valves and get a leg up on your competition.

Not Yet Reviewed

$134.56

Kuryakyn Bluegrass Breather Kits

Trap excess crankcase oil blowby with Kuryakyn bluegrass breather kits. By routing banjo tubes in an upward position and feeding into a vented catch can, Kuryakyn bluegrass breathers kits allow gasses to escape while catching any droplets of oil that may have got by. Breather kits available with a long or short leg banjo tube.

Not Yet Reviewed

$110.99

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$111.99

Wiseco Powersports Piston Kits

Wiseco powersports piston kits include your rings, piston pin, and circlips. Wiseco has a decade of experience producing quality pistons for dirt bikes, ATVs, snowmobiles, outboard marine engines, and motorcycles. Their piston kits provide strong, lightweight pistons with optimized designs that improve engine efficiency and maximize your torque and throttle response. Plus, Wiseco powersports piston kits are produced right here in the USA. It's time to blaze your own trail with Wiseco powersports piston kits.

4.0 out of 5 stars ( 7 )

$172.99

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$221.99

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