Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
Engine Kits & Rotating Assemblies
Summit Bucks
S&S Cycle 129 in. Power Packages with Chain Drive Cam
S&S Cycle offers 129 in. power packages with chain drive cam for a variety of Harley-Davidson© street bikes from 2017 and up. These packages are the ideal combination of performance and savings designed to transform your engine from mild to wild. They combine S&S's biggest big bore cylinders with matched 550 cam/cam-plate/oil pump and everything else a high performance cam chest needs to make big, reliable horsepower. Transform your 107 in. into a 129 in. monster. Additional details: * Available with 129 in. Big Bore pistons/cylinders * 550 lift cam for the perfect combination of horsepower and torque * Works with stock crankcases * Powdercoat finish matched to factory * MLS (multi-layered steel) head gaskets * Includes tappets, tappet cuffs, and high lift springs * Includes 129 cam cover badge
Not Yet Reviewed
$3,359.95
Summit Bucks
S&S Cycle 132 in. Power Packages with Gear Drive Cam
S&S Cycle's 132 in. power packages with gear drive cam are a high performance upgrade for an HD® motorcycle. They significantly increase the displacement of the engine to 132 cubic inches, while utilizing a gear-driven camshaft system. This provides benefits like increased horsepower and torque, improved reliability due to the robust gear drive, smoother power delivery, and a more aggressive engine character compared to a stock setup; all while maintaining compatibility with the existing engine case and allowing for a relatively easy installation process. Many power packages allow for selecting cams with different valve timing profiles to tailor the power characteristics to individual riding preferences. These kits are designed to work with existing engine components, often requiring minimal modifications to install, making them a popular choice for engine upgrades. Order the S&S Cycle kit designed specifically for your HD® model and engine to ensure proper fitment.
Not Yet Reviewed
$3,559.95
Summit Bucks
S&S Cycle 132 in. Power Packages with Chain Drive Cam
S&S Cycle offers 132 in. power packages with chain drive cam for a variety of Harley-Davidson© street bikes from 2017 and up. These packages are the ideal combination of performance and savings designed to transform your engine from mild to wild. They combine S&S's biggest big bore cylinders with matched 550 cam/cam-plate/oil pump and everything else a high performance cam chest needs to make big, reliable horsepower. Additional details: * Available with 132 in. Big Bore pistons/cylinders * 550 lift cam for the perfect combination of horsepower and torque * Works with stock crankcases * Powdercoat finish matched to factory * MLS (multi-layered steel) head gaskets * Includes tappets, tappet cuffs, and high lift springs * Includes 132 cam cover badge * 132 Power Pack: Stock heads, 550 cam, stealth AC, stock throttle body, S&S manifold, power tune duals, MK45 muffler * Recommended for closed course competition racing
Not Yet Reviewed
$3,359.95
Summit Bucks
S&S Cycle 124 in. Power Packages with Chain Drive Cam
The S&S Cycle 124 in. power packages with chain drive cam are the ideal combination of performance and savings to transform a Harley-Davidson® motorcycle without breaking the bank. Each kit is tailored with the necessary components for your specific HD® model. These kits offer significant benefits in terms of increased horsepower and torque, particularly noticeable in the mid-range and top-end of the rpm band, making for a more powerful and responsive riding experience, especially when paired with other performance upgrades like ported heads and high-flow exhaust systems. Many power packages allow for customization by choosing different cam profiles to tailor the power delivery to your riding style, whether you prioritize low-end torque or high-end horsepower. Most 124 in. power packages are designed as "bolt-on" kits, meaning they can be installed without requiring extensive engine machining, making the upgrade process relatively simple. Select the 124 in. power package kit with chain drive cam designed for your application.
Not Yet Reviewed
$3,265.95
Summit Bucks
S&S Cycle 124 in. Power Packages with Gear Drive Cam
S&S Cycle 124 in. power packages with gear drive cam are the ideal combination of performance and savings to transform a Harley-Davidson® motorcycle without breaking the bank. Each kit is tailored with the necessary components for your specific HD® model. These kits offer significant benefits, including a substantial increase in horsepower and torque across the powerband, improved throttle response, better cam timing accuracy due to the gear drive mechanism, and a more reliable valve train compared to a standard chain-driven cam, making it ideal for riders seeking a powerful and responsive engine upgrade, especially on larger displacement bikes like the Milwaukee-Eight models. Installing a 124 in. power package often necessitates additional tuning adjustments, including adjusting fuel delivery and ignition timing to optimize performance. Select the power package with gear drive cam designed specifically for your HD® model and engine to ensure proper fitment.
Not Yet Reviewed
$3,460.95
—
$3,695.95
Summit Bucks
S&S Cycle 129 in. Power Packages with Gear Drive Cam
S&S Cycle offers 129 in. power packages with gear drive cam for a variety of Harley-Davidson© street bikes from 2017 and up. These packages are the ideal combination of performance and savings designed to transform your engine from mild to wild. They combine S&S's biggest big bore cylinders with matched 550 cam/cam-plate/oil pump and everything else a high performance cam chest needs to make big, reliable horsepower. Transform your 107 in. into a 129 in. monster. Additional details: * Available with 129 in. Big Bore pistons/cylinders * 550 lift cam for the perfect combination of horsepower and torque * Works with stock crankcases * Powdercoat finish matched to factory * MLS (multi-layered steel) head gaskets * Includes tappets, tappet cuffs, and high lift springs * Includes 129 cam cover badge
Not Yet Reviewed
$3,559.95
Summit Bucks
S&S Cycle 96 in. Sidewinder Big Bore Stroker Kits
S&S Cycle offers 96 in. Sidewinder Big Bore Stroker kits for a variety of Harley-Davidson© street bikes from 1970 and up. They're an economical route to a larger displacement engine. These kits contain nearly everything needed to take a stock 80 in. Harley-Davidson© Evolution Big Twin engine up to 96 in. displacement. They include S&S 3-5/8 in. bore aluminum Sidewinder cylinders and forged pistons, a 4 5/8 in. stroke dynamically balanced S&S flywheel assembly, complete with S&S heavy-duty connecting rods and mainshafts, head gaskets, base gaskets, and exhaust gaskets. Stock cases will need to be bored out to 3 5/8 in. Cylinders are available in a natural, gloss black, or wrinkle black finish.
Not Yet Reviewed
$2,879.95
—
$4,499.95
Summit Bucks
S&S Cycle 93 in. Sidewinder Big Bore Stroker Kits
S&S Cycle offers 93 in. Sidewinder Big Bore Stroker kits for a variety of Harley-Davidson© street bikes from the 1970s and '80s. They're an economical route to a larger displacement engine. These kits contain nearly everything needed to take a stock 74 in. or 80 in. H-D© shovelhead engine up to 93 in. displacement. They include S&S 3 5/8 in. bore high tensile cast iron Sidewinder cylinders and forged pistons with wristpin and rings, a 4 1/2 in. stroke dynamically balanced S&S flywheel assembly, complete with S&S heavy-duty connecting rods and mainshafts, S&S stainless steel headbolts, base nut, S&S adjustable chromoly steel pushrods, head gaskets, base gaskets, exhaust gaskets, and an S&S heavy duty-top motor mount. Kits are available with 8.5:1 or 9.1:1 compression.
Not Yet Reviewed
$3,795.95
Summit Bucks
S&S Cycle 103 in. Sidewinder Big Bore Stroker Kits
S&S Cycle offers 103 in. Sidewinder Big Bore Stroker kits for a variety of Harley-Davidson© street bikes from the 1970s and '80s. These kits are an economical route to a larger displacement engine. They contain nearly everything needed to take a stock 74 in. or 80 in. H-D© shovelhead engine up to 103 in. displacement. Kits include S&S 3 5/8 in. bore high tensile cast iron Sidewinder cylinders and forged pistons with wristpin and rings, a 5 in. stroke small diameter dynamically balanced S&S flywheel assembly, complete with S&S heavy-duty connecting rods and mainshafts, S&S stainless steel headbolts, base nut, S&S adjustable chromoly steel pushrods, head gaskets, base gaskets, exhaust gaskets, and an S&S heavy-duty top motor mount. Compression is 9.7:1.
Not Yet Reviewed
$4,399.95
Summit Bucks
S&S Cycle 128 in. Power Packages with Chain Drive Cam
S&S Cycle offers 128 in. power packages with chain drive cam for a variety of Harley-Davidson© street bikes from 2017 and up. Kit details include: BIG BORE KIT: * 4.250 in. bore * Forged pistons * 11.1:1 compression ratio OIL PUMP/CAM PLATE: * Precision-machined from billet aluminum * Passage plugs removable for servicing * Independent scavenge sections for flywheel cavity and cam chest * Debris screens in both scavenge pickups * Magnet in cam chest to help stop debris from entering oil pump * Increased flow capacity on both feed and scavenge side * Pressure relief valve is adjustable with unit installed in engine * Kits now include updated oil pump with groove for optional OEM oil seal PUSHRODS: * Quickee pushrods with chrome covers TAPPETS: * Hand-assembled to exacting tolerances * Reduced valvetrain noise from start-up to shut-down * Close tolerances for low leak-down rates * Fast pump-up and superior high-RPM performance TAPPET CUFFS: * Hard anodized black coating * Billet aluminum construction * Stronger than stock material eliminates distortion * Improve tappet stability in high lift and high RPM situations CAM: * S&S 550 cam—designed for big bore applications * Available in both chain drive and gear drive variations VALVE SPRINGS: * Work well with cams up to .605 lift * High performance conical single-wire spring * Includes top collars, keepers, and valve seals/bottom collars CAM CHAIN TENSIONER: * Precision-machined from billet aluminum * Thicker shoe for longer wear * Direct chain oiling * Larger piston for more consistent pressure * Tighter tolerances improve stability
Not Yet Reviewed
$3,265.95
Summit Bucks
S&S Cycle 128 in. Power Packages with Gear Drive Cam
S&S Cycle offers 128 in. power packages with gear drive cam for a variety of Harley-Davidson© street bikes from 2017 and up. Kit details include: BIG BORE KIT: * 4.250 in. bore * Forged pistons * 11.1:1 compression ratio OIL PUMP/CAM PLATE: * Precision-machined from billet aluminum * Passage plugs removable for servicing * Independent scavenge sections for flywheel cavity and cam chest * Debris screens in both scavenge pickups * Magnet in cam chest to help stop debris from entering oil pump * Increased flow capacity on both feed and scavenge side * Pressure relief valve is adjustable with unit installed in engine * Kits now include updated oil pump with groove for optional OEM oil seal PUSHRODS: * Quickee pushrods with chrome covers TAPPETS: * Hand-assembled to exacting tolerances * Reduced valvetrain noise from start-up to shut-down * Close tolerances for low leak-down rates * Fast pump-up and superior high-RPM performance TAPPET CUFFS: * Hard anodized black coating * Billet aluminum construction * Stronger than stock material eliminates distortion * Improve tappet stability in high lift and high RPM situations CAM: * S&S 550 cam—designed for big bore applications * Gear drive kits provide improved cam timing accuracy and eliminate stock chain tensioner * Gear drive kits include outer drive gears VALVE SPRINGS: * Work well with cams up to .605 lift * High performance conical single-wire spring * Includes top collars, keepers, and valve seals/bottom collars
Not Yet Reviewed
$3,427.95
—
$3,460.95
Summit Bucks
S&S Cycle 74 in. Shovelhead Top End Kits
In most cases, it just isn't worth it to try to rebuild your old, cracked, worn-out cylinder heads or to bore the stock cylinders again. S&S Cycle 74 In. Shovelhead top end kits provide everything you need to replace the top end. Pistons are pre-fit to the cylinders, so there is no machine work done and very little down time. Compression pistons come complete with rings and wrist pins, manifold clamps seals, all required hardware, and gaskets. You can't go wrong with these kits. When it comes to reliability and durability, you need quality parts. Fit and quality mean life for your Harley®!
Not Yet Reviewed
$3,659.95
Summit Bucks
S&S Cycle 80 in. Shovelhead Top End Kits
Replace that worn out top end with S&S Cycle complete 80 in. top-end replacement kits for Big Twins with band-style heads. They include everything needed to totally replace the top end of your tired Shovelhead engine. The cylinder heads feature high-flowing ports and .590 in. lift capacity for improved performance and easy high-lift camshaft installation, while a moderate 8:1 compression ratio will allow your engine to run well on readily available premium pump gas. S&S Cycle 80 in. top-end kits contain S&S 3 1/2 in. bore high-tensile cast iron cylinders, 3 1/2 in. bore forged pistons, Super Stock cylinder heads, and all the gaskets and hardware necessary.
Not Yet Reviewed
$3,659.95
Summit Bucks
S&S Cycle 106 in. Big Bore Hot Set-Up Kits
S&S Cycle 106 in. Big Bore Hot Set-Up cylinder kits are easy to install. No machining or rebalancing is required, and the engine does not need to be removed from the chassis. With these kits, the resulting 106 in. engine has a compression ratio of 10:1, is stock height (no frame clearance problems), and a stock EFI throttle body will fit. Kits include: * 3.927 in. bore pistons, rings, wrist pins * Big bore cylinders finished in wrinkle black powder coat * 585C chain drive Easy Start camshafts * Chromoly steel adjustable pushrods * High performance tappets * Gaskets
Not Yet Reviewed
$2,143.95
Summit Bucks
S&S Cycle 95 in. Super Stock Hot Set-Up Kits
S&S Cycle 95 in. Super Stock Hot Set-Up Kits are true bolt-on kits. There is no machining required, they maintain stock engine height, and enable up to a 40 hp increase. Components and specs: * .045 in. MLS head gaskets * S&S 585 gear drive cams * S&S high-strength chromoly tubing pushrods * Enlarged valve pocket recesses in S&S pistons accommodate oversize valves and high-lift cams * S&S 3 7/8 in. bore cylinders and pistons * 79cc cylinder heads * Machined wrinkle black powdercoat finish
Not Yet Reviewed
$4,091.95
