S&S CYCLE
Shop S&S Cycle Harley-Davidson Performance Parts: Big Bore Kits, Engines & Exhaust at JJ Motorsports
Discover legendary S&S Cycle performance parts, the premier USA-based manufacturer of high-horsepower motorcycle engines and components since 1958. Founded by George J. Smith and Stanley Stankos, S&S is the go-to brand for serious Harley-Davidson builders and racers seeking maximum power, reliability, and American-made quality. From complete long-block engines and big bore top-end kits to flywheels, cams, carburetors, and race-proven exhaust systems, S&S delivers groundbreaking innovations like the T143 engine, MK45 mufflers, and Shovelhead-style heads that transform stock Harleys into fire-breathing machines.
At JJ Motorsports, we stock the full line of S&S Cycle parts at competitive prices with fast shipping. Build more cubic inches, add serious torque, or upgrade your exhaust note with the brand trusted by champions for over 65 years. Explore related categories such as motorcycle engines and components for complete builds or motorcycle exhaust for power gains.
Top S&S Cycle Products
- S&S Cycle Top End Kit - Big Twin 90-0097 – Complete bolt-on top-end kit with Shovelhead-style heads, stock bore cylinders, 8:1 forged pistons, gaskets, and hardware — no machining required for instant big-inch power.
- S&S Cycle Flywheel Assembly 320-0598 – Forged steel flywheel assembly with keyed 6" tapered sprocket shaft, balanced to stock HD 80" pistons, includes crankpin and connecting rods — built for high-performance and custom applications.
- S&S Cycle 4-1/2" Chrome MK45 Cutlass Performance Mufflers 550-1011 – Bold 4-1/2" chrome mufflers with stainless steel baffles, RaceTEX packing for deep bass rumble, removable dB reducer, and 50-state legal — massive looks with serious performance gains.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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S&S CYCLE Final Drive Belt - 128-Tooth - 1 1/2" 106-0350
S&S CYCLE
$287.95Made of super-strong Gates Carbon X3N material12040095- SKU:
- 12040095
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- MATERIAL:
- X3N CARBON
- PRODUCT NAME:
- BELT
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- TOOTH COUNT:
- 128
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/2'
$287.95Qty in Cart: 0Quantity:Price:$287.95Subtotal: -
S&S CYCLE Final Drive Belt - 133-Tooth - 1 1/2" 106-0353
S&S CYCLE
$292.95Made of super-strong Gates Carbon X3N material12040098- SKU:
- 12040098
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- MATERIAL:
- X3N CARBON
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 133
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- BELT
$292.95Qty in Cart: 0Quantity:Price:$292.95Subtotal: -
S&S CYCLE Final Drive Belt - 136-Tooth - 1 1/2" 106-0355
S&S CYCLE
$308.95Made of super-strong Gates Carbon X3N material12040100- SKU:
- 12040100
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- TOOTH COUNT:
- 136
- RIDING STYLE:
- STREET
- MATERIAL:
- X3N CARBON
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
- WIDTH IMPERIAL:
- 1-1/2'
$308.95Qty in Cart: 0Quantity:Price:$308.95Subtotal: -
S&S CYCLE Final Drive Belt - 128-Tooth - 1 1/8" 106-0358
S&S CYCLE
$274.95Made of super-strong Gates Carbon X3N material12040103- SKU:
- 12040103
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 128
- WIDTH IMPERIAL:
- 1-1/8'
- TYPE:
- REAR DRIVE
- MATERIAL:
- X3N CARBON
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$274.95Qty in Cart: 0Quantity:Price:$274.95Subtotal: -
S&S CYCLE Final Drive Belt - 130-Tooth - 1 1/8" 106-0359
S&S CYCLE
$284.95Made of super-strong Gates Carbon X3N material12040104- SKU:
- 12040104
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- MATERIAL:
- X3N CARBON
- PRODUCT NAME:
- BELT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 130
- WIDTH IMPERIAL:
- 1-1/8'
$284.95Qty in Cart: 0Quantity:Price:$284.95Subtotal: -
S&S CYCLE High Compression Piston Kit 920-0115
S&S CYCLE
$521.95Significantly increase performance, Provides more horsepower without sacrificing torque, 10.6:1 compression ratio, Simple EFI tuning with three calibration downloads for Dynojet® Power Vision® tuner09103980- SKU:
- 09103980
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- TYPE:
- HIGH COMPRESSION
- BORE - OVERSIZE:
- +0,010'
- COMPRESSION RATIO IMPERIAL:
- 10.6:1
- DISPLACEMENT:
- 110'
- UNITS:
- KIT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 4.010'
- PISTON HEAD SHAPE:
- RAISED DOME
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
$521.95Qty in Cart: 0Quantity:Price:$521.95Subtotal: -
S&S CYCLE Replacement Rings 94-1221X
S&S CYCLE
$54.95Replacement rings come as sets for two pistons, Made in the U.S.A.09120598- SKU:
- 09120598
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
$54.95Qty in Cart: 0Quantity:Price:$54.95Subtotal: -
S&S CYCLE Replacement Rings 94-2218X
S&S CYCLE
$64.95Replacement rings come as sets for two pistons, Made in the U.S.A.09120004- SKU:
- 09120004
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- PISTON SIZE IMPERIAL:
- +0.020'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.500'
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
S&S CYCLE Replacement Rings 94-2203X
S&S CYCLE
$64.95Replacement rings come as sets for two pistons, Made in the U.S.A.09120086- SKU:
- 09120086
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- PRODUCT NAME:
- PISTON RING
- BORE SIZE IMPERIAL:
- 3.4375'
- PISTON SIZE IMPERIAL:
- +0.030'
- UNITS:
- SET
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
S&S CYCLE Replacement Rings 94-2207X
S&S CYCLE
$64.95Replacement rings come as sets for two pistons, Made in the U.S.A.09120090- SKU:
- 09120090
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PISTON SIZE IMPERIAL:
- +0.070'
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.4375'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
S&S CYCLE CAM 350G M8 17- 330-0625
S&S CYCLE
$458.95Made in the USA, Gear drive cams provide improved valve timing accuracy, 350G gear drive cam has stock specs, but eliminates cam drive chain and tensioner, Bolt-in! Compatible with all stock valve...09251159- SKU:
- 09251159
- Availability:
- Ships Same Business Day
- Weight:
- 4.20 LBS
- EXHAUST LIFT IMPERIAL:
- 0.374'
- PRODUCT NAME:
- CAM
- APPLICATION:
- INTAKE
- INTAKE LIFT IMPERIAL:
- 0.350'
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- APPLICATION:
- EXHAUST
- UNITS:
- KIT
$458.95Qty in Cart: 0Quantity:Price:$458.95Subtotal: -
S&S CYCLE Oil Pump Return Plug - Twin Cam 310-0564
S&S CYCLE
$11.95OEM replacement part for S&S Oil Pump09320210- SKU:
- 09320210
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$11.95Qty in Cart: 0Quantity:Price:$11.95Subtotal: -
S&S CYCLE Cylinder Kit - M8 910-0733
S&S CYCLE
$1,559.95The Big Bore kit yields excellent results with stock cylinder heads, Easy installation: no need to bore or split existing cases, just swap the cylinders, Cylinders are constructed from premium...09310876- SKU:
- 09310876
- Availability:
- Ships Same Business Day
- Weight:
- 28.80 LBS
- COLOR/FINISH:
- BLACK GRANITE
- MATERIAL:
- IRON
- DISPLACEMENT:
- 128'
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PRODUCT NAME:
- CYLINDER KIT
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- STYLE:
- BIG BORE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$1,559.95Qty in Cart: 0Quantity:Price:$1,559.95Subtotal: -
S&S CYCLE Main Jet - .068" 11-7234
S&S CYCLE
$50.95For jetting most stock and performance engines, Made in the U.S.A.DS72068- SKU:
- DS72068
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- JET SIZE:
- 0.068
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- FEATURES:
- FOR S&S CARBURETORS
- UNITS:
- 5 PACK
$50.95Qty in Cart: 0Quantity:Price:$50.95Subtotal: -
S&S CYCLE Replacement Rings 94-1291X
S&S CYCLE
$61.95Replacement ring set for S&S PistonsDS751312- SKU:
- DS751312
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- PISTON SIZE IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.875'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
$61.95Qty in Cart: 0Quantity:Price:$61.95Subtotal: -
S&S CYCLE Power Pack - Chain Drive 330-0668
S&S CYCLE
$3,396.95Parts are proven to work well together therefore no guesswork, Saves money by buying as a package, Include bolt-in cams, premium tappets and Quickee Pushrods, Made in the U.S.A.09040030- SKU:
- 09040030
- Availability:
- Ships Same Business Day
- Weight:
- 43.00 LBS
- DISPLACEMENT:
- 110'
- STYLE:
- 585CE
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.000'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- MODEL:
- POWER PACKAGE
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- CAM DRIVE TYPE:
- CHAIN
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- PERFORMANCE KIT
$3,396.95Qty in Cart: 0Quantity:Price:$3,396.95Subtotal: -
S&S CYCLE Easy Start Cam Kit - Twin Cam 106-5221
S&S CYCLE
$1,070.95Start any engine regardless of displacement or compression ratio with a stock starter, Save your starter and battery; tested for 10,000 starts without running battery down, Allow for easy start by...09250449- SKU:
- 09250449
- Availability:
- Ships Same Business Day
- Weight:
- 6.10 LBS
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 250°
- EXHAUST OPEN IMPERIAL:
- 55°
- GRIND:
- 570 SERIES
- INTAKE LIFT IMPERIAL:
- 0.570'
- INTAKE OPEN IMPERIAL:
- 20°
- TYPE:
- GEAR
- APPLICATION:
- EXHAUST
- EXHAUST LIFT IMPERIAL:
- 0.570'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 107.5°
- FEATURES:
- INCLUDES INSTALLATION KIT
- INTAKE LOBE CENTERLINE IMPERIAL:
- 100°
- MODEL:
- EASY START
- EXHAUST CLOSE IMPERIAL:
- 20°
- INTAKE CLOSE IMPERIAL:
- 40°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.187'
- UNITS:
- KIT
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.179'
- INTAKE DURATION IMPERIAL:
- 240°
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
$1,070.95Qty in Cart: 0Quantity:Price:$1,070.95Subtotal: -
S&S CYCLE Oil Pump Supply Rotor - TC3 310-0561
S&S CYCLE
$61.95Oil pump rotor for Twin Cam models09210561- SKU:
- 09210561
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- ROTOR
- UNITS:
- KIT
- MODEL:
- TC3
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
$61.95Qty in Cart: 0Quantity:Price:$61.95Subtotal: -
S&S CYCLE Cam Kit - Gear Drive 330-0462
S&S CYCLE
$948.95Improves valve timing accuracy by eliminating timing chain lash, Easy Start cams allow stock starter to start any engine, No tensioner shoes to wear out or fail09251049- SKU:
- 09251049
- Availability:
- Ships Same Business Day
- Weight:
- 6.00 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- EXHAUST OPEN IMPERIAL:
- 50°
- INTAKE CLOSE IMPERIAL:
- 33°
- INTAKE DURATION IMPERIAL:
- 226°
- EXHAUST CLOSE IMPERIAL:
- 22°
- INTAKE OPEN IMPERIAL:
- 13°
- EXHAUST DURATION IMPERIAL:
- 252°
- EXHAUST LIFT IMPERIAL:
- 0.585'
- GRIND:
- MR103
- INTAKE LIFT IMPERIAL:
- 0.585'
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- FEATURES:
- CAM KIT
- UNITS:
- KIT
$948.95Qty in Cart: 0Quantity:Price:$948.95Subtotal: -
S&S CYCLE Easy Start Cam Kit - Twin Cam 330-0453
S&S CYCLE
$719.95Start any engine regardless of displacement or compression ratio with a stock starter, Save your starter and battery; tested for 10,000 starts without running battery down, Allow for easy start by...09251053- SKU:
- 09251053
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
- FEATURES:
- INCLUDES INSTALLATION KIT
- APPLICATION:
- EXHAUST
- EXHAUST LIFT IMPERIAL:
- 0.575'
- INTAKE LIFT IMPERIAL:
- 0.575'
- MODEL:
- EASY START
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- EXHAUST OPEN IMPERIAL:
- 45°
- GRIND:
- HP103
- INTAKE CLOSE IMPERIAL:
- 49°
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 26°
- EXHAUST DURATION IMPERIAL:
- 251°
- INTAKE DURATION IMPERIAL:
- 249°
- INTAKE OPEN IMPERIAL:
- 20°
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
$719.95Qty in Cart: 0Quantity:Price:$719.95Subtotal: -
S&S CYCLE Main Jet - .110" - 5-Pack 11-7255
S&S CYCLE
$50.95For jetting most stock and performance engines, Made in the U.S.A.10060324- SKU:
- 10060324
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- JET SIZE:
- 0.110
- PRODUCT NAME:
- JET
- UNITS:
- 5 PACK
- FEATURES:
- FOR S&S CARBURETORS
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
$50.95Qty in Cart: 0Quantity:Price:$50.95Subtotal: -
POWER PK OC CD FIN-HL M8310-1056
S&S CYCLE
$2,699.950904-0040- SKU:
- 0904-0040
- Availability:
- Ships Today!
- Weight:
- 47.70 LBS
$2,699.95Qty in Cart: 0Quantity:Price:$2,699.95Subtotal: -
POWER PK OC GD FIN-HL M8310-1053
S&S CYCLE
$2,895.950904-0037- SKU:
- 0904-0037
- Availability:
- Ships Today!
- Weight:
- 49.40 LBS
$2,895.95Qty in Cart: 0Quantity:Price:$2,895.95Subtotal: -
96" Hot Set Up Kit 0904-0001
S&S CYCLE
$4,283.9596" Hot Set Up KitKit contains nearly everything needed to take a stock 80" Harley-Davidson Evolution Big Twin engine up to 96" displacement and to get the most out of the added cubic inchesIncludes...0904-0001- SKU:
- 0904-0001
- Availability:
- Ships Same Business Day
- Weight:
- 82.60 LBS
- MFG Part #:
- 90-0122
- Unit of Measure:
- Kit
$4,283.95Qty in Cart: 0Quantity:Price:$4,283.95Subtotal:
S&S Cycle
S&S Cycle stands as a towering icon in the motorcycle industry, renowned for its unwavering commitment to excellence and innovation in performance motorcycle parts. Founded in 1958 by the dynamic duo of George J. Smith and Stanley Stankos, S&S Cycle has carved its niche as the premier engineer and manufacturer of motorcycle engines and parts in America. Originating from a passion for racing, the company has spent over six decades perfecting the art of motorcycle performance, ensuring each piece that comes out of their factory not only meets but exceeds the high expectations of the powersports community. With a deep-rooted history in enhancing the power and performance of Harley-Davidson® motorcycles, S&S Cycle is the go-to brand for enthusiasts seeking unmatched quality and proven performance.
S&S Cycle Parts
S&S Cycle's product line extends far beyond just engines; it encompasses a broad array of components designed to elevate the performance of your motorcycle. From the initial solid lifter conversion kit featuring lightweight aluminum pushrods to state-of-the-art carburetors, air cleaners, and throttle bodies, every part is engineered with precision. The brand's dedication to innovation means continually refining and expanding their offerings to include everything a motorcycle might need for optimal performance and reliability.
S&S Cycle Engines
At the heart of S&S Cycle's legacy are its engines. Renowned for their robustness and reliability, S&S engines come in various styles, including the iconic Knucklehead, Shovelhead, Panhead, Evolution-style, and Twin-cam style engines. Each engine, like the T143 Assembled Long Block Engine, is meticulously constructed to provide unmatched power and torque, transforming any motorcycle into a high-performance machine. S&S's commitment to quality ensures that whether you're cruising the streets or dominating the racetrack, their engines will deliver unparalleled performance.
S&S Cams
S&S cams are designed to unlock the full potential of your motorcycle's engine. With a focus on maximizing horsepower, torque, and overall engine efficiency, S&S cams are a critical component for anyone looking to boost their bike's performance. Each cam is the result of exhaustive research and development, ensuring compatibility and impressive gains across various riding conditions. Whether you're upgrading an existing engine or building a custom setup, S&S cams are essential for achieving peak performance.
S&S Motorcycle Exhausts
To complement their engines and performance parts, S&S Cycle also offers a range of high-quality motorcycle exhaust systems. These exhausts are not only built to withstand the rigors of high-performance riding but are also designed to optimize exhaust flow, enhancing both sound and power output. From aggressive race-inspired designs to more subdued styles for daily riding, S&S Cycle's exhaust systems combine performance improvements with aesthetic appeal, making them a favorite among discerning riders.
