Harley Engine
Harley Bike Engine Parts at JJ Motorsports
Rebuild and boost your Harley's engine with premium parts from JJ Motorsports. Our inventory features complete gasket sets, piston kits, oil filters, pushrod tubes, and coolers designed for maximum strength, leak-free sealing, and high-performance in extreme conditions. Compatible with Big Twins, Softail, Touring, and more, these components support top-end overhauls, oil management, and durability for street rides or custom builds.
Shop trusted brands like Drag Specialties for magnetic filters and Wiseco for forged pistons. Explore related categories such as Harley air and fuel for carb tuning or Harley drivetrain for transmission upgrades.
Top Harley Engine Products
- DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 140003HP-BX18 – Captures metal particles with pressure relief.
- WISECO Piston Kit .010 .883 XL K1656 – Forged aluminum with rings, pins, and circlips for rebuilds.
- DRAG SPECIALTIES Pushrod Tube Kit Big Twin 75711 – Includes tubes, clips, cups, and springs for complete engine.
- ULTRACOOL Below Regulator Mount Oil Cooler Stainless Steel RF-2CSS – Fits S&S 111/124/143 engines with machined adapter.
- PAUGHCO Ribbed Teardrop Air Cleaner 701-200 – Chrome-plated aluminum with mini filter.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
On Sale
S&S CYCLE Lower End Gasket Kit 31-2066
S&S CYCLE
MSRP: $71.95Now: $64.76Was: $71.95A reliable lower end gasket kit is foundational to engine longevity and peak performance. S&S Cycle's 31-2066 kit delivers OEM-quality sealing that prevents oil leakage and maintains compression integrity across the entire power band. Whether you're...312066- SKU:
- 312066
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- TYPE:
- LOWER END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- FEATURES:
- FOR S&S SUPER STOCK '70 - '91 BIG TWIN
- RIDING STYLE:
- STREET
MSRP: $71.95Now: $64.76Was: $71.95Qty in Cart: 0Quantity:Price:MSRP: $71.95Now: $64.76Was: $71.95Subtotal: -
On Sale
S&S CYCLE Lower End Gasket Kit - Super Side Winder Plus 31-2068
S&S CYCLE
MSRP: $63.95Now: $57.56Was: $63.95A leaking lower end gasket kit will compromise your engine's integrity and cost you performance on the track or trail. The S&S Cycle Lower End Gasket Kit delivers OEM-quality sealing with premium materials engineered to withstand extreme combustion...312068- SKU:
- 312068
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- TYPE:
- LOWER END
- BORE SIZE IMPERIAL:
- 4.125'
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- BORE SIZE:
- 4,125'
- UNITS:
- KIT
MSRP: $63.95Now: $57.56Was: $63.95 -
On Sale
S&S CYCLE Cam - 583 Series - Chain Drive - Twin Cam 330-0106
S&S CYCLE
MSRP: $399.95Now: $359.96Was: $399.95Timing chain lash directly degrades valve event accuracy, robbing your engine of peak performance and reliability. The S&S Cycle 583 Series Cam eliminates this inconsistency by replacing loose stock chain drive geometry with a precision gear drive system...09250745- SKU:
- 09250745
- Availability:
- Ships Same Business Day
- Weight:
- 4.05 LBS
- EXHAUST DURATION IMPERIAL:
- 262°
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 107°
- EXHAUST OPEN IMPERIAL:
- 58°
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 24°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 96.5°
- INTAKE OPEN IMPERIAL:
- 5°
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.206'
- INTAKE LIFT IMPERIAL:
- 0.583'
- TYPE:
- CHAIN
- EXHAUST LIFT IMPERIAL:
- 0.583'
- GRIND:
- 583 SERIES
- INTAKE CLOSE IMPERIAL:
- 18°
- INTAKE DURATION IMPERIAL:
- 203°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.113'
- UNITS:
- KIT
MSRP: $399.95Now: $359.96Was: $399.95 -
On Sale
S&S CYCLE Easy Start Cam Kit - Twin Cam 106-4840
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95Cold starts on high-compression big-twins demand serious starter demand and battery drain—the S&S Easy Start Cam Kit eliminates this struggle by reducing initial crank compression until ignition, then automatically engaging full power once running...09250747- SKU:
- 09250747
- Availability:
- Ships Same Business Day
- Weight:
- 5.95 LBS
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 270°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.214'
- EXHAUST OPEN IMPERIAL:
- 65°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 107.5°
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- EXHAUST LIFT IMPERIAL:
- 0.640'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 110°
- FEATURES:
- INCLUDES INSTALLATION KIT
- INTAKE LIFT IMPERIAL:
- 0.640'
- EXHAUST CLOSE IMPERIAL:
- 25°
- GRIND:
- 640 SERIES
- INTAKE CLOSE IMPERIAL:
- 60°
- INTAKE DURATION IMPERIAL:
- 265°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.228'
- INTAKE OPEN IMPERIAL:
- 25°
- MODEL:
- EASY START
- UNITS:
- KIT
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Easy Start Cam Kit - Twin Cam 330-0299
S&S CYCLE
MSRP: $540.95Now: $486.86Was: $540.95Cold starts on high-compression Twin Cam engines can drain your battery and wear out your starter prematurely. The S&S Cycle Easy Start Cam Kit solves this problem by temporarily reducing crank compression during startup, allowing your stock starter to...09250829- SKU:
- 09250829
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- APPLICATION:
- INTAKE
- INTAKE CLOSE IMPERIAL:
- 33°
- INTAKE DURATION IMPERIAL:
- 226°
- INTAKE OPEN IMPERIAL:
- 13°
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 252°
- MODEL:
- EASY START
- TYPE:
- CHAIN
- EXHAUST LIFT IMPERIAL:
- 0.585'
- EXHAUST OPEN IMPERIAL:
- 50°
- GRIND:
- MR103
- UNITS:
- KIT
- EXHAUST CLOSE IMPERIAL:
- 22°
- FEATURES:
- INCLUDES INSTALLATION KIT
- INTAKE LIFT IMPERIAL:
- 0.585'
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
MSRP: $540.95Now: $486.86Was: $540.95 -
On Sale
S&S CYCLE Easy Start Cam Kit - Twin Cam 330-0303
S&S CYCLE
MSRP: $1,070.95Now: $963.86Was: $1,070.95Cold starts on high-compression big-twin engines demand more from your starter and battery than they should have to give. The S&S Cycle Easy Start Cam Kit solves this by temporarily reducing crank compression during initial ignition, allowing your stock...09250832- SKU:
- 09250832
- Availability:
- Ships Same Business Day
- Weight:
- 6.00 LBS
- APPLICATION:
- EXHAUST
- EXHAUST LIFT IMPERIAL:
- 0.585'
- EXHAUST OPEN IMPERIAL:
- 50°
- INTAKE CLOSE IMPERIAL:
- 33°
- EXHAUST CLOSE IMPERIAL:
- 22°
- INTAKE OPEN IMPERIAL:
- 13°
- APPLICATION:
- INTAKE
- INTAKE DURATION IMPERIAL:
- 226°
- INTAKE LIFT IMPERIAL:
- 0.585'
- PRODUCT NAME:
- CAM KIT
- TYPE:
- GEAR
- EXHAUST DURATION IMPERIAL:
- 252°
- FEATURES:
- INCLUDES INSTALLATION KIT
- GRIND:
- MR103
- MODEL:
- EASY START
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $1,070.95Now: $963.86Was: $1,070.95 -
On Sale
S&S CYCLE Easy Start Cam Kit - Twin Cam 330-0339
S&S CYCLE
MSRP: $1,070.95Now: $963.86Was: $1,070.95Cold starts on high-compression big-displacement engines can drain your battery and wear out your starter prematurely—the S&S Cycle Easy Start Cam Kit solves this by temporarily reducing crank compression during startup, then automatically returning to...09250834- SKU:
- 09250834
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- APPLICATION:
- INTAKE
- EXHAUST LIFT IMPERIAL:
- 0.635'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 100.5°
- INTAKE CLOSE IMPERIAL:
- 43.5°
- INTAKE DURATION IMPERIAL:
- 243°
- TYPE:
- GEAR
- EXHAUST CLOSE IMPERIAL:
- 37.5°
- INTAKE LIFT IMPERIAL:
- 0.635'
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- GRIND:
- 635 SERIES
- INTAKE LIFT AT TDC IMPERIAL:
- 0.115'
- MODEL:
- EASY START
- EXHAUST DURATION IMPERIAL:
- 276°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.175'
- EXHAUST OPEN IMPERIAL:
- 58.5°
- FEATURES:
- INCLUDES INSTALLATION KIT
- INTAKE LOBE CENTERLINE IMPERIAL:
- 102°
- INTAKE OPEN IMPERIAL:
- 19.5°
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
MSRP: $1,070.95Now: $963.86Was: $1,070.95 -
On Sale
S&S CYCLE Cams - HP103 - Chain Drive 330-0343
S&S CYCLE
MSRP: $418.95Now: $377.06Was: $418.95If you're running a Big Twin and tired of timing chain slop killing your valve timing accuracy, the S&S Cycle HP103 gear drive kit eliminates that problem entirely. By replacing chain drive with precision gears, you gain tighter valve control, unlock...09250835- SKU:
- 09250835
- Availability:
- Ships Same Business Day
- Weight:
- 4.05 LBS
- APPLICATION:
- INTAKE
- EXHAUST LIFT IMPERIAL:
- 0.575'
- EXHAUST OPEN IMPERIAL:
- 45°
- INTAKE DURATION IMPERIAL:
- 249°
- INTAKE OPEN IMPERIAL:
- 20°
- TYPE:
- CHAIN
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 26°
- INTAKE LIFT IMPERIAL:
- 0.575'
- GRIND:
- HP103
- INTAKE CLOSE IMPERIAL:
- 49°
- UNITS:
- KIT
- EXHAUST DURATION IMPERIAL:
- 251°
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
MSRP: $418.95Now: $377.06Was: $418.95 -
On Sale
S&S CYCLE Back Plate Gasket - E/G 106-1724
S&S CYCLE
MSRP: $8.95Now: $8.06Was: $8.95A quality back plate gasket is critical for maintaining a reliable seal between your engine's back plate and block—any leakage here compromises oil retention and can lead to costly internal damage. The S&S Cycle Back Plate Gasket is engineered to OEM...10101735- SKU:
- 10101735
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,0625'
- STYLE:
- SUPER G
- TYPE:
- BACKPLATE
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- STYLE:
- SUPER E
- THICKNESS:
- 1,59 MM (0,0625')
- THICKNESS METRIC:
- 1.59 MM
MSRP: $8.95Now: $8.06Was: $8.95 -
On Sale
S&S CYCLE Cylinder Kit - Twin Cam 910-0221
S&S CYCLE
MSRP: $1,643.95Now: $1,479.56Was: $1,643.95If you're serious about extracting more power from your Twin Cam engine, a big bore kit is one of the most direct paths to increased displacement and performance. The S&S Cycle 910-0221 delivers measurable gains while keeping installation...09310539- SKU:
- 09310539
- Availability:
- Ships Same Business Day
- Weight:
- 24.10 LBS
- BORE SIZE IMPERIAL:
- 4.125'
- COMPRESSION RATIO IMPERIAL:
- 10.9:1
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
- DISPLACEMENT:
- 117'
MSRP: $1,643.95Now: $1,479.56Was: $1,643.95 -
On Sale
S&S CYCLE TC3 OIl Pump - BT 310-0641
S&S CYCLE
MSRP: $495.95Now: $446.36Was: $495.95A reliable oil pump is the backbone of engine longevity—especially in high-performance applications where pressure consistency and scavenging efficiency directly impact reliability and power delivery. The S&S Cycle TC3 delivers three-stage pressure...09320106- SKU:
- 09320106
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- MODEL:
- TC3
- BASE COLOR:
- BLUE
- PRODUCT NAME:
- PUMP
- RIDING STYLE:
- STREET
- TYPE:
- OIL
MSRP: $495.95Now: $446.36Was: $495.95 -
On Sale
S&S CYCLE Top End Gasket - 4-1/8" - Evo 90-9506
S&S CYCLE
MSRP: $116.95Now: $105.26Was: $116.95A quality top-end gasket is critical to maintaining cylinder head sealing and preventing costly oil or coolant leaks that compromise engine performance. This S&S Cycle gasket is engineered to the exacting tolerances required for Evo big-twin engines,...909506- SKU:
- 909506
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE SIZE IMPERIAL:
- 4.125'
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
MSRP: $116.95Now: $105.26Was: $116.95 -
On Sale
S&S CYCLE Oil Filter - Chrome 31-4102A
S&S CYCLE
MSRP: $23.95Now: $21.56Was: $23.95Engine cleanliness directly impacts performance and longevity—stock filters often allow contaminants to bypass into your oil system, compromising protection during critical moments. The S&S Cycle 31-4102A redesigns this fundamental flaw with a direct...07120539- SKU:
- 07120539
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- CANISTER
- PRODUCT NAME:
- OIL FILTER
- MATERIAL:
- STEEL
- UNITS:
- EACH
- BASE FINISH:
- CHROME
MSRP: $23.95Now: $21.56Was: $23.95 -
On Sale
S&S CYCLE Oil Filter - Chrome 31-4104A
S&S CYCLE
MSRP: $23.95Now: $21.56Was: $23.95A quality oil filter directly impacts engine longevity and performance by removing contaminants before they cause wear. The S&S Cycle 31-4104A improves on stock designs with superior filtration efficiency and a direct bypass valve that keeps unfiltered...07120541- SKU:
- 07120541
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- OIL FILTER
- FEATURES:
- ANTI-DRAIN BACK VALVE
- TYPE:
- CANISTER
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
MSRP: $23.95Now: $21.56Was: $23.95 -
On Sale
S&S CYCLE Quickee Pushrods - Black - M8 930-0137
S&S CYCLE
MSRP: $334.95Now: $301.46Was: $334.95If you're running Evolution or Twin Cam hydraulic tappets, S&S Cycle Quickee Pushrods eliminate the frustration of rocker cover removal during installation and adjustment. Their threaded adjuster design lets you fine-tune valve clearance quickly and lock...09280096- SKU:
- 09280096
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- MATERIAL:
- CHROMOLY STEEL
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GLOSS BLACK
- STYLE:
- ADJUSTABLE
- BASE COLOR:
- BLACK
- MODEL:
- QUICKEE
- STYLE:
- QUICKEE
- BASE FINISH:
- GLOSS
- PRODUCT NAME:
- PUSHROD KIT
- UNITS:
- KIT
MSRP: $334.95Now: $301.46Was: $334.95 -
On Sale
S&S CYCLE Oil Filter - Chrome - 12-Pack 310-0242
S&S CYCLE
MSRP: $288.95Now: $260.06Was: $288.95Stock oil filters compromise engine protection by allowing unfiltered bypass oil to circulate during cold starts and high-flow conditions. The S&S Cycle Oil Filter eliminates this vulnerability with a direct bypass valve that captures smaller...07120495- SKU:
- 07120495
- Availability:
- Ships Same Business Day
- Weight:
- 8.50 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- FEATURES:
- ANTI-DRAIN BACK VALVE
- MATERIAL:
- STEEL
- TYPE:
- CANISTER
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- OIL FILTER
- UNITS:
- 12 PACK
MSRP: $288.95Now: $260.06Was: $288.95 -
On Sale
S&S CYCLE Oil Filter - Chrome - 12-Pack 310-0240
S&S CYCLE
MSRP: $288.95Now: $260.06Was: $288.95Engine protection starts with filtration. The S&S Cycle Oil Filter reduces contaminant carryover with a direct bypass valve design that captures smaller particles while maintaining stock-level flow resistance. Choose the chrome finish that matches your...07120497- SKU:
- 07120497
- Availability:
- Ships Same Business Day
- Weight:
- 8.30 LBS
- TYPE:
- CANISTER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- STEEL
- BASE FINISH:
- CHROME
- UNITS:
- 12 PACK
MSRP: $288.95Now: $260.06Was: $288.95 -
On Sale
S&S CYCLE Cylinder Kit - 110" - Black 910-0651
S&S CYCLE
MSRP: $1,540.95Now: $1,386.86Was: $1,540.95If you're running an 88", 96", or 103" big twin and want genuine displacement gains without engine teardown, the S&S Cycle 110" Cylinder Kit delivers a straightforward bolt-in solution. This kit boosts your engine's cubic inches while maintaining...09310742- SKU:
- 09310742
- Availability:
- Ships Same Business Day
- Weight:
- 26.91 LBS
- COLOR/FINISH:
- BLACK
- DISPLACEMENT:
- 110'
- MODEL:
- SIDEWINDER
- PRODUCT NAME:
- CYLINDER AND PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- BORE SIZE IMPERIAL:
- 4.000'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- RIDING STYLE:
- STREET
- TYPE:
- BIG BORE
- UNITS:
- KIT
MSRP: $1,540.95Now: $1,386.86Was: $1,540.95 -
On Sale
S&S CYCLE Cylinder Kit - M8 910-0685
S&S CYCLE
MSRP: $1,561.95Now: $1,405.76Was: $1,561.95If you're running a stock M8 and looking to unlock measurable horsepower and torque gains without splitting cases, the S&S CYCLE Big Bore kit delivers straightforward power. Premium cast-iron lined aluminum cylinders paired with matched pistons and rings...09310835- SKU:
- 09310835
- Availability:
- Ships Same Business Day
- Weight:
- 29.01 LBS
- DISPLACEMENT:
- 128'
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- MATERIAL:
- IRON
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- STYLE:
- BIG BORE
- UNITS:
- KIT
MSRP: $1,561.95Now: $1,405.76Was: $1,561.95Qty in Cart: 0Quantity:Price:MSRP: $1,561.95Now: $1,405.76Was: $1,561.95Subtotal: -
On Sale
S&S CYCLE Cylinder Heads 900-0349
S&S CYCLE
MSRP: $1,795.95Now: $1,616.36Was: $1,795.95S&S Cycle cylinder heads deliver measurable flow improvements that unlock performance gains whether you're running stock displacement or building toward future upgrades. The fully assembled design with springs and valves gets you on the road faster,...09031292- SKU:
- 09031292
- Availability:
- Ships Same Business Day
- Weight:
- 30.20 LBS
- COLOR/FINISH:
- POWDER-COATED
- COLOR/FINISH:
- WRINKLE BLACK
- DISPLACEMENT:
- 91 CC
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
MSRP: $1,795.95Now: $1,616.36Was: $1,795.95
