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S&S CYCLE

S&S CYCLE

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
  • On Sale
    S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0722A S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0722A

    S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0722A

    S&S CYCLE

    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Restrictive factory air filters cost you horsepower and throttle response. The S&S Cycle Air Stinger Stealth delivers a measurable 55% airflow increase, allowing your engine to breathe freely while...
    10102966
    SKU:
    10102966
    Availability:
    Ships Same Business Day
    Weight:
    2.80 LBS
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Subtotal:
  • On Sale
    S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black Chrome Ring 170-0724A S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black Chrome Ring 170-0724A

    S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black Chrome Ring 170-0724A

    S&S CYCLE

    MSRP: $249.95
    Now: $224.96
    Was: $249.95
    Stock air filters restrict your engine's breathing, costing you horsepower and throttle response. The S&S Cycle Air Stinger Stealth delivers a measurable 55% increase in filter surface area, enabling...
    10102967
    SKU:
    10102967
    Availability:
    Ships Same Business Day
    Weight:
    1.85 LBS
    MSRP: $249.95
    Now: $224.96
    Was: $249.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $249.95
    Now: $224.96
    Was: $249.95
    Subtotal:
  • On Sale
    S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0725A S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0725A

    S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0725A

    S&S CYCLE

    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Restrictive factory air filters waste horsepower and rob your engine of the unrestricted breathing it needs to perform. The S&S Cycle Air Stinger Stealth delivers a 55% airflow increase through...
    10102968
    SKU:
    10102968
    Availability:
    Ships Same Business Day
    Weight:
    2.95 LBS
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Subtotal:
  • On Sale
    S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0726A S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0726A

    S&S CYCLE Air Stinger Stealth Air Cleaner Kit - Black 170-0726A

    S&S CYCLE

    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Airflow is the foundation of engine performance, and restrictive stock air cleaners rob your engine of potential. The S&S Cycle Air Stinger Stealth Air Cleaner Kit replaces that limiting factory...
    10102969
    SKU:
    10102969
    Availability:
    Ships Same Business Day
    Weight:
    2.85 LBS
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Subtotal:
  • On Sale
    S&S CYCLE Replacement Air Stinger Air Filter 170-0723A S&S CYCLE Replacement Air Stinger Air Filter 170-0723A

    S&S CYCLE Replacement Air Stinger Air Filter 170-0723A

    S&S CYCLE

    MSRP: $59.95
    Now: $53.96
    Was: $59.95
    Keeping your S&S Stinger Air Cleaner running at peak efficiency requires regular filter replacement—this OEM-specification filter ensures consistent airflow, optimal fuel mixture, and reliable...
    10114648
    SKU:
    10114648
    Availability:
    Ships Same Business Day
    Weight:
    0.44 LBS
    MSRP: $59.95
    Now: $53.96
    Was: $59.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $59.95
    Now: $53.96
    Was: $59.95
    Subtotal:
  • On Sale
    S&S CYCLE Big Bore Piston Kit - 124" - +.010 - M8 920-0141

    S&S CYCLE Big Bore Piston Kit - 124" - +.010 - M8 920-0141

    S&S CYCLE

    MSRP: $648.95
    Now: $584.06
    Was: $648.95
    If you're pushing your M8 Harley to 124 cubic inches, you need pistons engineered to handle the increased displacement and combustion pressures. The S&S Cycle Big Bore Piston Kit delivers OEM-quality...
    09110084
    SKU:
    09110084
    Availability:
    Ships Same Business Day
    Weight:
    3.25 LBS
    MSRP: $648.95
    Now: $584.06
    Was: $648.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $648.95
    Now: $584.06
    Was: $648.95
    Subtotal:
  • On Sale
    S&S CYCLE Big Bore Piston Kit - 128" - +.010 - M8 920-0142

    S&S CYCLE Big Bore Piston Kit - 128" - +.010 - M8 920-0142

    S&S CYCLE

    MSRP: $636.95
    Now: $573.26
    Was: $636.95
    If you're pushing your M8 to 128 cubic inches, your factory pistons are holding you back. This S&S Cycle Big Bore Piston Kit delivers the strength and precision your build demands, with forged...
    09106522
    SKU:
    09106522
    Availability:
    Ships Same Business Day
    Weight:
    3.15 LBS
    MSRP: $636.95
    Now: $573.26
    Was: $636.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $636.95
    Now: $573.26
    Was: $636.95
    Subtotal:
  • On Sale
    S&S CYCLE Big Bore Piston Kit - 131" - +.010 - M8 920-0148 S&S CYCLE Big Bore Piston Kit - 131" - +.010 - M8 920-0148

    S&S CYCLE Big Bore Piston Kit - 131" - +.010 - M8 920-0148

    S&S CYCLE

    MSRP: $648.95
    Now: $584.06
    Was: $648.95
    If you're pushing your M8 to the limits, a big bore piston kit is essential for unlocking serious displacement gains without a complete engine overhaul. The S&S Cycle 131" big bore kit delivers the...
    09106523
    SKU:
    09106523
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    MSRP: $648.95
    Now: $584.06
    Was: $648.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $648.95
    Now: $584.06
    Was: $648.95
    Subtotal:
  • On Sale
    S&S CYCLE 4" Broadhead Slip-On Mufflers - Slash Cut - Black 550-1075 S&S CYCLE 4" Broadhead Slip-On Mufflers - Slash Cut - Black 550-1075

    S&S CYCLE 4" Broadhead Slip-On Mufflers - Slash Cut - Black 550-1075

    S&S CYCLE

    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    A quality slip-on muffler transforms your cruiser's sound and appearance without requiring exhaust system modifications. The S&S Cycle Broadhead delivers classic Harley aesthetics with a deep,...
    18011764
    SKU:
    18011764
    Availability:
    Ships Same Business Day
    Weight:
    28.05 LBS
    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    Subtotal:
  • On Sale
    S&S CYCLE 4" Broadhead Slip-On Mufflers - Slash Cut - Chrome 550-1076 S&S CYCLE 4" Broadhead Slip-On Mufflers - Slash Cut - Chrome 550-1076

    S&S CYCLE 4" Broadhead Slip-On Mufflers - Slash Cut - Chrome 550-1076

    S&S CYCLE

    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    If you're running a cruiser or touring bike that demands both presence and compliance, the S&S Cycle 4" Broadhead Slip-On Mufflers deliver the aggressive sound and classic styling that defines...
    18011765
    SKU:
    18011765
    Availability:
    Ships Same Business Day
    Weight:
    27.90 LBS
    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    Subtotal:
  • On Sale
    S&S CYCLE 4" Broadhead Slip-On Mufflers - Fishtail - Chrome 550-1077 S&S CYCLE 4" Broadhead Slip-On Mufflers - Fishtail - Chrome 550-1077

    S&S CYCLE 4" Broadhead Slip-On Mufflers - Fishtail - Chrome 550-1077

    S&S CYCLE

    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    If you're running a cruiser or touring bike, exhaust tone and aesthetics matter as much as performance. The S&S Cycle 4" Broadhead Slip-On Mufflers deliver that signature deep, authoritative rumble...
    18011766
    SKU:
    18011766
    Availability:
    Ships Same Business Day
    Weight:
    28.75 LBS
    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $871.95
    Now: $784.76
    Was: $871.95
    Subtotal:
  • On Sale
    S&S CYCLE Rocker Arms and Shaft Set 106-2412

    S&S CYCLE Rocker Arms and Shaft Set 106-2412

    S&S CYCLE

    MSRP: $995.95
    Now: $896.36
    Was: $995.95
    Harley-Davidson big twin engines demand rocker arms built to handle sustained high-RPM operation without sacrificing valve train precision. The S&S Cycle 106-2412 set delivers CNC-machined...
    09270026
    SKU:
    09270026
    Availability:
    Ships Same Business Day
    Weight:
    4.23 LBS
    MSRP: $995.95
    Now: $896.36
    Was: $995.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $995.95
    Now: $896.36
    Was: $995.95
    Subtotal:
  • On Sale
    S&S CYCLE 4-1/2" GNX Slip-On Mufflers - Guardian Black 550-1078 S&S CYCLE 4-1/2" GNX Slip-On Mufflers - Guardian Black 550-1078

    S&S CYCLE 4-1/2" GNX Slip-On Mufflers - Guardian Black 550-1078

    S&S CYCLE

    MSRP: $593.95
    Now: $534.56
    Was: $593.95
    If you're running stock or lightly modified head pipes and want a distinctive, aggressive exhaust note without a full system overhaul, the S&S Cycle GNX slip-ons deliver genuine tone character with...
    18011767
    SKU:
    18011767
    Availability:
    Ships Same Business Day
    Weight:
    24.75 LBS
    MSRP: $593.95
    Now: $534.56
    Was: $593.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $593.95
    Now: $534.56
    Was: $593.95
    Subtotal:
  • On Sale
    S&S CYCLE 4-1/2" GNX Slip-On Mufflers - Chrome 550-1079 S&S CYCLE 4-1/2" GNX Slip-On Mufflers - Chrome 550-1079

    S&S CYCLE 4-1/2" GNX Slip-On Mufflers - Chrome 550-1079

    S&S CYCLE

    MSRP: $593.95
    Now: $534.56
    Was: $593.95
    If you're running stock head pipes and want a genuine aggressive exhaust note without a complete system overhaul, these S&S mufflers deliver exactly that. The louvered baffle design transforms your...
    18011768
    SKU:
    18011768
    Availability:
    Ships Same Business Day
    Weight:
    24.75 LBS
    MSRP: $593.95
    Now: $534.56
    Was: $593.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $593.95
    Now: $534.56
    Was: $593.95
    Subtotal:
  • On Sale
    S&S CYCLE 132" Big-Bore Cylinder Kit - Black Granite/Highlighted Fins - M8 910-0847

    S&S CYCLE 132" Big-Bore Cylinder Kit - Black Granite/Highlighted Fins - M8 910-0847

    S&S CYCLE

    MSRP: $1,649.95
    Now: $1,484.96
    Was: $1,649.95
    The S&S Cycle 132" Big-Bore Cylinder Kit delivers substantial displacement gains without the complexity of a full engine rebuild. This bolt-on upgrade retains your stock engine height and original...
    09311112
    SKU:
    09311112
    Availability:
    Ships Same Business Day
    Weight:
    28.21 LBS
    MSRP: $1,649.95
    Now: $1,484.96
    Was: $1,649.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,649.95
    Now: $1,484.96
    Was: $1,649.95
    Subtotal:
  • On Sale
    S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0152 S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0152

    S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0152

    S&S CYCLE

    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    If you're running a Twin Cam 110 and want responsive throttle control without sacrificing reliability, the S&S Cycle Super G Carburetor delivers measurable fuel and air flow improvements in a bolt-on...
    10010092
    SKU:
    10010092
    Availability:
    Ships Same Business Day
    Weight:
    7.80 LBS
    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    Subtotal:
  • On Sale
    S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Evolution Big Twin 110-0145 S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Evolution Big Twin 110-0145

    S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Evolution Big Twin 110-0145

    S&S CYCLE

    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    The S&S CYCLE Super E Carburetor transforms your Evolution Big Twin's fuel delivery and throttle response with precision engineering designed for real-world performance gains. Whether you're chasing...
    10010085
    SKU:
    10010085
    Availability:
    Ships Same Business Day
    Weight:
    8.25 LBS
    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    Subtotal:
  • On Sale
    S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Gloss Black - Evolution Big Twin 110-0146 S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Gloss Black - Evolution Big Twin 110-0146

    S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Gloss Black - Evolution Big Twin 110-0146

    S&S CYCLE

    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    The S&S Cycle Super E Carburetor transforms your Evolution Big Twin's fuel delivery and throttle response with precision engineering and increased flow capacity. This complete kit combines a tunable...
    10010086
    SKU:
    10010086
    Availability:
    Ships Same Business Day
    Weight:
    8.20 LBS
    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    Subtotal:
  • On Sale
    S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Evolution Big Twin 110-0147 S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Evolution Big Twin 110-0147

    S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Evolution Big Twin 110-0147

    S&S CYCLE

    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    If you're running an Evolution Big Twin and want seamless throttle response with improved fuel and air delivery, the S&S Cycle Super G Carburetor is engineered to give you exactly that. This bolt-on...
    10010087
    SKU:
    10010087
    Availability:
    Ships Same Business Day
    Weight:
    7.75 LBS
    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    Subtotal:
  • On Sale
    S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Gloss Black - Evolution Big Twin 110-0148 S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Gloss Black - Evolution Big Twin 110-0148

    S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Gloss Black - Evolution Big Twin 110-0148

    S&S CYCLE

    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    The S&S Cycle Super G Carburetor transforms your Evolution Big Twin's fuel and air delivery, unlocking responsive throttle control and reliable cold starts without compromising the factory dual-cable...
    10010088
    SKU:
    10010088
    Availability:
    Ships Same Business Day
    Weight:
    7.70 LBS
    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    Subtotal:
  • On Sale
    S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0149 S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0149

    S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0149

    S&S CYCLE

    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    The S&S Cycle Super E Carburetor transforms your Twin Cam engine's fuel delivery and throttle response with precision engineering and proven reliability. This bolt-on upgrade delivers measurable...
    10010089
    SKU:
    10010089
    Availability:
    Ships Same Business Day
    Weight:
    8.25 LBS
    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    Subtotal:
  • On Sale
    S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0150 S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0150

    S&S CYCLE Super G Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0150

    S&S CYCLE

    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    The S&S CYCLE Super G Carburetor transforms your Twin Cam engine's fuel delivery and throttle response with precision engineering and adjustable tuning that adapts to your riding style. Whether...
    10010090
    SKU:
    10010090
    Availability:
    Ships Same Business Day
    Weight:
    7.80 LBS
    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $895.95
    Now: $806.36
    Was: $895.95
    Subtotal:
  • On Sale
    S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0151 S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0151

    S&S CYCLE Super E Carburetor with Stealth Air Cleaner Kit - Chrome - Twin Cam 110-0151

    S&S CYCLE

    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    If you're running a Twin Cam engine, carburetor selection directly impacts throttle response, cold-start reliability, and overall driveability. The S&S Cycle Super E delivers precision fuel metering...
    10010091
    SKU:
    10010091
    Availability:
    Ships Same Business Day
    Weight:
    8.30 LBS
    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $795.95
    Now: $716.36
    Was: $795.95
    Subtotal:
  • On Sale
    S&S CYCLE Accelerator Pump Pushrods - Super E/G Carburetor - 5-Pack 11-2393

    S&S CYCLE Accelerator Pump Pushrods - Super E/G Carburetor - 5-Pack 11-2393

    S&S CYCLE

    MSRP: $40.95
    Now: $36.86
    Was: $40.95
    The accelerator pump is critical to consistent throttle response and smooth power delivery in any carbureted engine. S&S Cycle's pushrods ensure precise fuel metering during acceleration, eliminating...
    10030049
    SKU:
    10030049
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    MSRP: $40.95
    Now: $36.86
    Was: $40.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $40.95
    Now: $36.86
    Was: $40.95
    Subtotal:
  • On Sale
    S&S CYCLE 2-into-1 Grand National Exhaust System - Black - Race Only 4111-266-R S&S CYCLE 2-into-1 Grand National Exhaust System - Black - Race Only 4111-266-R

    S&S CYCLE 2-into-1 Grand National Exhaust System - Black - Race Only 4111-266-R

    S&S CYCLE

    MSRP: $1,235.95
    Now: $1,112.36
    Was: $1,235.95
    If you're serious about extracting maximum horsepower from your cruiser while commanding attention on the street, the S&S Cycle 2-into-1 Grand National demands consideration. This system consolidates...
    18103127
    SKU:
    18103127
    Availability:
    Ships Same Business Day
    Weight:
    30.20 LBS
    MSRP: $1,235.95
    Now: $1,112.36
    Was: $1,235.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,235.95
    Now: $1,112.36
    Was: $1,235.95
    Subtotal:
  • On Sale
    S&S CYCLE 2-into-1 Grand National Exhaust System - Black - 50-State 4111-266 S&S CYCLE 2-into-1 Grand National Exhaust System - Black - 50-State 4111-266

    S&S CYCLE 2-into-1 Grand National Exhaust System - Black - 50-State 4111-266

    S&S CYCLE

    MSRP: $1,540.95
    Now: $1,386.86
    Was: $1,540.95
    If you're running a Big Twin Harley and want real power gains without chasing a tune-up afterward, the S&S Cycle 2-into-1 Grand National delivers. This stainless steel system merges cylinder...
    18103126
    SKU:
    18103126
    Availability:
    Ships Same Business Day
    Weight:
    30.60 LBS
    MSRP: $1,540.95
    Now: $1,386.86
    Was: $1,540.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,540.95
    Now: $1,386.86
    Was: $1,540.95
    Subtotal:
  • On Sale
    S&S CYCLE Turbocharger Conversion Kit 560-0340 S&S CYCLE Turbocharger Conversion Kit 560-0340

    S&S CYCLE Turbocharger Conversion Kit 560-0340

    S&S CYCLE

    MSRP: $6,999.95
    Now: $6,299.96
    Was: $6,999.95
    If you're running closed-course competition and need a measurable power increase without compromise, the S&S CYCLE Turbocharger Conversion Kit delivers 50%+ horsepower gains with a tuned 10 psi boost...
    18300658
    SKU:
    18300658
    Availability:
    Ships Same Business Day
    Weight:
    136.00 LBS
    MSRP: $6,999.95
    Now: $6,299.96
    Was: $6,999.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $6,999.95
    Now: $6,299.96
    Was: $6,999.95
    Subtotal:
  • On Sale
    S&S CYCLE CNC-Ported Intake Manifold - M8 - 55 mm - Black 160-0276 S&S CYCLE CNC-Ported Intake Manifold - M8 - 55 mm - Black 160-0276

    S&S CYCLE CNC-Ported Intake Manifold - M8 - 55 mm - Black 160-0276

    S&S CYCLE

    MSRP: $399.95
    Now: $359.96
    Was: $399.95
    A properly ported intake manifold is fundamental to maximizing fuel atomization and flow efficiency in any M8 build. This S&S Cycle CNC-ported manifold eliminates restrictive stock geometry while...
    10500472
    SKU:
    10500472
    Availability:
    Ships Same Business Day
    Weight:
    1.15 LBS
    MSRP: $399.95
    Now: $359.96
    Was: $399.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $399.95
    Now: $359.96
    Was: $399.95
    Subtotal:
  • On Sale
    S&S CYCLE Stealth Teardrop Air Cleaner Cover - M8 - Lava Chrome 170-0779 S&S CYCLE Stealth Teardrop Air Cleaner Cover - M8 - Lava Chrome 170-0779

    S&S CYCLE Stealth Teardrop Air Cleaner Cover - M8 - Lava Chrome 170-0779

    S&S CYCLE

    MSRP: $195.95
    Now: $176.36
    Was: $195.95
    The S&S Cycle Stealth Teardrop Air Cleaner Cover elevates your M8's intake aesthetic while protecting your engine from debris. This lava chrome finish delivers the visual impact of traditional...
    10140370
    SKU:
    10140370
    Availability:
    Ships Same Business Day
    Weight:
    1.55 LBS
    MSRP: $195.95
    Now: $176.36
    Was: $195.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $195.95
    Now: $176.36
    Was: $195.95
    Subtotal:
  • On Sale
    S&S CYCLE Stealth Mini Teardrop Air Cleaner Cover - M8 - Lava Chrome 170-0780

    S&S CYCLE Stealth Mini Teardrop Air Cleaner Cover - M8 - Lava Chrome 170-0780

    S&S CYCLE

    MSRP: $249.95
    Now: $224.96
    Was: $249.95
    The S&S Cycle Stealth Mini Teardrop Air Cleaner Cover delivers a refined aesthetic upgrade while protecting your M8's intake system from debris and moisture. Its lava chrome finish provides the...
    10140371
    SKU:
    10140371
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    MSRP: $249.95
    Now: $224.96
    Was: $249.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $249.95
    Now: $224.96
    Was: $249.95
    Subtotal:
  • On Sale
    S&S CYCLE Stealth Mini Teardrop Air Cleaner - M8 - Lava Chrome 170-0782 S&S CYCLE Stealth Mini Teardrop Air Cleaner - M8 - Lava Chrome 170-0782

    S&S CYCLE Stealth Mini Teardrop Air Cleaner - M8 - Lava Chrome 170-0782

    S&S CYCLE

    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    An efficient air intake system is fundamental to maximizing engine performance, and the S&S Cycle Stealth Mini Teardrop Air Cleaner delivers measurable gains in both airflow and combustion efficiency...
    10103176
    SKU:
    10103176
    Availability:
    Ships Same Business Day
    Weight:
    1.40 LBS
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Subtotal:
  • On Sale
    S&S CYCLE Stealth Teardrop Air Cleaner - M8 - Lava Chrome 170-0781 S&S CYCLE Stealth Teardrop Air Cleaner - M8 - Lava Chrome 170-0781

    S&S CYCLE Stealth Teardrop Air Cleaner - M8 - Lava Chrome 170-0781

    S&S CYCLE

    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Cold, dense air is the foundation of efficient combustion—and this S&S Cycle Stealth Teardrop Air Cleaner delivers exactly that. The high-strength synthetic polymer backplate actively reduces heat...
    10103175
    SKU:
    10103175
    Availability:
    Ships Same Business Day
    Weight:
    2.85 LBS
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $395.95
    Now: $356.36
    Was: $395.95
    Subtotal:
  • On Sale
    S&S CYCLE 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1225 S&S CYCLE 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1225

    S&S CYCLE 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1225

    S&S CYCLE

    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    If you're running a 107" M8 oil-cooled engine and want measurable power gains without extensive machine work, this 129" kit delivers the displacement and efficiency upgrades you need. The matched...
    09040101
    SKU:
    09040101
    Availability:
    Ships Same Business Day
    Weight:
    43.70 LBS
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Subtotal:
  • On Sale
    S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1231 S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1231

    S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1231

    S&S CYCLE

    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    If you're running a 114" or 117" M8 and want measurable power gains without compromising reliability, the S&S Cycle 132" Power Package delivers the displacement increase you need. This kit transforms...
    09040104
    SKU:
    09040104
    Availability:
    Ships Same Business Day
    Weight:
    73.75 LBS
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Subtotal:
  • On Sale
    S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1237 S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1237

    S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1237

    S&S CYCLE

    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    If you're running a 114" or 117" M8 and want genuine power gains without a complete engine rebuild, the S&S Cycle 132" Power Package delivers displacement increase, optimized breathing, and reliable...
    09040105
    SKU:
    09040105
    Availability:
    Ships Same Business Day
    Weight:
    44.00 LBS
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Subtotal:
  • On Sale
    S&S CYCLE 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Non-Highlighted Fins - M8 310-1226 S&S CYCLE 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Non-Highlighted Fins - M8 310-1226

    S&S CYCLE 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Non-Highlighted Fins - M8 310-1226

    S&S CYCLE

    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    If you're running an M8 with 107 cubic inches, you're leaving serious power on the table. The S&S Cycle 129" Power Package transforms your engine into a genuine big-displacement performer without...
    09040106
    SKU:
    09040106
    Availability:
    Ships Same Business Day
    Weight:
    43.55 LBS
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Subtotal:
  • On Sale
    S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Water Cooled - Highlighted Fins - M8 310-1236 S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Water Cooled - Highlighted Fins - M8 310-1236

    S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Water Cooled - Highlighted Fins - M8 310-1236

    S&S CYCLE

    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    If you're running a 114" or 117" M8 and want meaningful power gains without a complete engine overhaul, the S&S Cycle 132" Power Package delivers significant displacement and performance in a bolt-on...
    09040110
    SKU:
    09040110
    Availability:
    Ships Same Business Day
    Weight:
    45.70 LBS
    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    Subtotal:
  • On Sale
    S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Oil Cooled - Highlighted Fins - M8 310-1232 S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Oil Cooled - Highlighted Fins - M8 310-1232

    S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Oil Cooled - Highlighted Fins - M8 310-1232

    S&S CYCLE

    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    If you're running a 114" or 117" M8 and want genuine performance gains without compromise, the S&S Cycle 132" Power Package delivers the displacement increase that translates to more power across the...
    09040111
    SKU:
    09040111
    Availability:
    Ships Same Business Day
    Weight:
    45.05 LBS
    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    Subtotal:
  • On Sale
    S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1238 S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1238

    S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 310-1238

    S&S CYCLE

    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    If you're running a 114" or 117" M8 and want to unlock serious power without a complete engine swap, the S&S Cycle 132" Power Package delivers a straightforward path to significantly higher...
    09040112
    SKU:
    09040112
    Availability:
    Ships Same Business Day
    Weight:
    48.20 LBS
    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,559.95
    Now: $3,203.96
    Was: $3,559.95
    Subtotal:
  • On Sale
    S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Water Cooled - Highlighted Fins - M8 310-1229 S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Water Cooled - Highlighted Fins - M8 310-1229

    S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Water Cooled - Highlighted Fins - M8 310-1229

    S&S CYCLE

    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    If you're running a 114" or 117" M8, this kit delivers the displacement and flow characteristics serious builders demand. The 132" platform transforms your engine into a genuine performance...
    09040099
    SKU:
    09040099
    Availability:
    Ships Same Business Day
    Weight:
    43.80 LBS
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,359.95
    Now: $3,023.96
    Was: $3,359.95
    Subtotal:
  • Total: items /

Adding your products to cart

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.

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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