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 Return Drive Gear 31-6013
S&S CYCLE
MSRP: $33.95Now: $30.56Was: $33.95A properly functioning oil pump is the lifeblood of any Big Twin engine, and the S&S Cycle Return Drive Gear ensures consistent oil delivery and pressure stability throughout your ride. This...09320201- SKU:
- 09320201
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- DRIVE
- TYPE:
- OIL PUMP
- TYPE:
- RETURN
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $33.95Now: $30.56Was: $33.95 -
On Sale
S&S CYCLE Return Idler Gear 31-6014
S&S CYCLE
MSRP: $32.95Now: $29.66Was: $32.95A properly functioning oil pump is the lifeblood of your Big Twin engine, and the idler gear is critical to that operation. The S&S Cycle Return Idler Gear (31-6014) is engineered to OEM...09320202- SKU:
- 09320202
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- TYPE:
- IDLER
- TYPE:
- OIL PUMP
- TYPE:
- RETURN
- UNITS:
- EACH
MSRP: $32.95Now: $29.66Was: $32.95 -
On Sale
S&S CYCLE Supply Drive Gear 31-6015
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95A properly functioning oil pump is critical to engine longevity, and the S&S Cycle Supply Drive Gear 31-6015 ensures reliable oil circulation in your Big Twin. This CNC-machined gear maintains...09320203- SKU:
- 09320203
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- DRIVE
- TYPE:
- SUPPLY
- TYPE:
- OIL PUMP
- UNITS:
- EACH
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE Oil Pump Drive Shaft 31-6011
S&S CYCLE
MSRP: $29.95Now: $26.96Was: $29.95A properly functioning oil pump drive shaft is critical to maintaining consistent lubrication and engine longevity on Big Twin models. The S&S Cycle 31-6011 is engineered to OEM specifications,...09320204- SKU:
- 09320204
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHAFT
- UNITS:
- EACH
- TYPE:
- OIL PUMP
MSRP: $29.95Now: $26.96Was: $29.95 -
On Sale
S&S CYCLE Idler Shaft - Big Twin 31-6004
S&S CYCLE
MSRP: $15.95Now: $14.36Was: $15.95A properly functioning oil pump is critical to Big Twin engine longevity—and the idler shaft is its mechanical backbone. S&S Cycle's OEM-quality replacement ensures consistent oil delivery under all...09320205- SKU:
- 09320205
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SHAFT
- TYPE:
- IDLER
MSRP: $15.95Now: $14.36Was: $15.95Qty in Cart: 0Quantity:Price:MSRP: $15.95Now: $14.36Was: $15.95Subtotal: -
On Sale
S&S CYCLE Cylinder Kit 910-0690
S&S CYCLE
MSRP: $1,077.95Now: $970.16Was: $1,077.95If you're building a high-displacement Harley engine and need reliable, precision-engineered internals, the S&S Cycle 1250cc Cylinder Kit delivers the bore and piston combination that serious...09310529- SKU:
- 09310529
- Availability:
- Ships Same Business Day
- Weight:
- 22.95 LBS
- COLOR/FINISH:
- SILVER
- COMPRESSION RATIO IMPERIAL:
- 11.2:1
- MATERIAL:
- ALUMINUM
- MATERIAL:
- IRON
- STYLE:
- BIG BORE
- BORE SIZE IMPERIAL:
- 3.562'
- DISPLACEMENT:
- 1250 CC
- MATERIAL:
- CAST
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- PRODUCT NAME:
- CYLINDER KIT
- TYPE:
- DOMED
- UNITS:
- KIT
MSRP: $1,077.95Now: $970.16Was: $1,077.95Qty in Cart: 0Quantity:Price:MSRP: $1,077.95Now: $970.16Was: $1,077.95Subtotal: -
On Sale
S&S CYCLE Hydraulic Tappets - Big Twin 33-5352
S&S CYCLE
MSRP: $381.95Now: $343.76Was: $381.95Stock hydraulic tappets can't handle the demands of high-performance valve springs and aggressive cam profiles—they starve for oil under load and wear prematurely. S&S Cycle's redesigned hydraulic...09290004- SKU:
- 09290004
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- UNITS:
- SET OF 4
- PRODUCT NAME:
- TAPPET
- RIDING STYLE:
- STREET
- STYLE:
- HYDRAULIC
MSRP: $381.95Now: $343.76Was: $381.95 -
On Sale
S&S CYCLE 4 Gear Drive Cam Kit 33-4275
S&S CYCLE
MSRP: $669.95Now: $602.96Was: $669.95If you're running S&S gear-driven cams on your Harley, you need a complete four-gear set to ensure proper valve train operation and longevity. This kit supplies all secondary and primary gears, plus...DS199532- SKU:
- DS199532
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- UNITS:
- KIT
- TYPE:
- CAM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GEAR KIT
- SIZE:
- -
MSRP: $669.95Now: $602.96Was: $669.95 -
On Sale
S&S CYCLE Pushrod Cover Keeper Set - 2.4" 93-4070
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95When you're building a custom engine or modifying beyond stock specifications, standard pushrod covers often won't clear your upgraded components. S&S Cycle's Pushrod Cover Keeper Set provides...09280094- SKU:
- 09280094
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- LENGTH:
- 2,40'
- LENGTH IMPERIAL:
- 2.40'
- PRODUCT NAME:
- KEEPER
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- SET
- MATERIAL:
- STEEL
- TYPE:
- PUSHROD COVER
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE Quickee Pushrod Kit - XL 930-0023
S&S CYCLE
MSRP: $326.95Now: $294.26Was: $326.95Maintaining precise valve timing is critical to engine reliability and performance, especially in high-RPM applications where pushrod wear directly impacts combustion efficiency. The S&S Cycle...09280036- SKU:
- 09280036
- Availability:
- Ships Same Business Day
- Weight:
- 1.91 LBS
- COLOR/FINISH:
- CHROME
- BASE FINISH:
- CHROME
- MATERIAL:
- CHROMOLY STEEL
- RIDING STYLE:
- STREET
- MODEL:
- QUICKEE
- STYLE:
- QUICKEE
- PRODUCT NAME:
- PUSHROD KIT
- UNITS:
- KIT
MSRP: $326.95Now: $294.26Was: $326.95 -
On Sale
S&S CYCLE Breather Gear - +.03" 33-4242
S&S CYCLE
MSRP: $199.95Now: $179.96Was: $199.95Crankcase pressure management directly impacts engine reliability and performance—excessive blow-by reduces seal integrity and contaminates your oil. The S&S Cycle Breather Gear delivers superior...09320125- SKU:
- 09320125
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- PRODUCT NAME:
- GEAR
- FEATURES:
- OVERSIZED (+.03')
- TYPE:
- BREATHER
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- UNITS:
- EACH
MSRP: $199.95Now: $179.96Was: $199.95 -
On Sale
S&S CYCLE Oil Pump with Cam Plate - M8/Twin Cooled 310-0997B
S&S CYCLE
MSRP: $887.17Now: $798.45Was: $887.17Reliable oil circulation is the foundation of engine longevity, especially in high-performance applications where inadequate lubrication leads to catastrophic failure. The S&S Cycle Oil Pump with Cam...09320250- SKU:
- 09320250
- Availability:
- Ships Same Business Day
- Weight:
- 5.60 LBS
- TYPE:
- CAM SUPPORT
- COLOR/FINISH:
- BLUE
- UNITS:
- KIT
- BASE COLOR:
- BLUE
- PRODUCT NAME:
- PUMP
- RIDING STYLE:
- STREET
- TYPE:
- OIL
MSRP: $887.17Now: $798.45Was: $887.17Qty in Cart: 0Quantity:Price:MSRP: $887.17Now: $798.45Was: $887.17Subtotal: -
On Sale
S&S CYCLE Oil Cooled Oil Pump - M8 310-0959A
S&S CYCLE
MSRP: $495.95Now: $446.36Was: $495.95The S&S Cycle Oil Cooled Oil Pump is engineered to manage higher oil volumes and maintain optimal viscosity in M8 engines operating under sustained high-performance conditions. Factory oil pumps...09320267- SKU:
- 09320267
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- UNITS:
- EACH
- BASE COLOR:
- BLUE
- PRODUCT NAME:
- PUMP
- RIDING STYLE:
- STREET
- TYPE:
- OIL
MSRP: $495.95Now: $446.36Was: $495.95 -
On Sale
S&S CYCLE Cylinders - 4.25" - M8 - Black 910-0683
S&S CYCLE
MSRP: $929.95Now: $836.96Was: $929.95If you're running a 4.375" stroke big-twin, displacement is everything—and these S&S Cycle cylinders deliver the bore you need for serious power gains. A bolt-on solution that transforms your...09310837- SKU:
- 09310837
- Availability:
- Ships Same Business Day
- Weight:
- 26.61 LBS
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- NON-HIGHLIGHTED FINS
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- WRINKLE BLACK
- STYLE:
- BIG BORE
- UNITS:
- PAIR
MSRP: $929.95Now: $836.96Was: $929.95Qty in Cart: 0Quantity:Price:MSRP: $929.95Now: $836.96Was: $929.95Subtotal: -
On Sale
S&S CYCLE Cylinders and Pistons - 80" - Low Compression 91-9024
S&S CYCLE
MSRP: $1,995.95Now: $1,796.36Was: $1,995.95If you're rebuilding a 80" Shovelhead and need to maintain reliable stock compression without sacrificing durability, S&S Cycle's cylinder and piston kit delivers the precision engineering your...09310688- SKU:
- 09310688
- Availability:
- Ships Same Business Day
- Weight:
- 33.00 LBS
- MATERIAL:
- CAST IRON
- PRODUCT NAME:
- CYLINDER AND PISTON KIT
- COLOR/FINISH:
- POWDER-COATED
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- BORE SIZE IMPERIAL:
- 3.500'
- COMPRESSION RATIO IMPERIAL:
- 8.0:1
- STYLE:
- STOCK
- UNITS:
- KIT
- DISPLACEMENT:
- 80'
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
MSRP: $1,995.95Now: $1,796.36Was: $1,995.95 -
On Sale
S&S CYCLE Cylinder/Piston Kit - Natural 910-0179
S&S CYCLE
MSRP: $1,155.95Now: $1,040.36Was: $1,155.95S&S Cycle cylinder and piston kits deliver the displacement increase your engine needs to unlock serious power gains without requiring a complete engine rebuild. The 3-1/2" bore design is engineered...09310737- SKU:
- 09310737
- Availability:
- Ships Same Business Day
- Weight:
- 27.65 LBS
- STROKE LENGTH IMPERIAL:
- 4.250'
- PRODUCT NAME:
- CYLINDER AND PISTON KIT
- COMPRESSION RATIO IMPERIAL:
- 8.8:1
- DISPLACEMENT:
- 80'
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.500'
- COLOR/FINISH:
- NATURAL ALUMINUM
- UNITS:
- KIT
MSRP: $1,155.95Now: $1,040.36Was: $1,155.95Qty in Cart: 0Quantity:Price:MSRP: $1,155.95Now: $1,040.36Was: $1,155.95Subtotal: -
On Sale
S&S CYCLE Cylinder/Piston Kit - Black 910-0182
S&S CYCLE
MSRP: $1,231.95Now: $1,108.76Was: $1,231.95If you're serious about big-inch performance on a Harley platform, you need a cylinder and piston kit engineered for reliability at elevation. The S&S CYCLE 80" kit delivers the displacement and...09310738- SKU:
- 09310738
- Availability:
- Ships Same Business Day
- Weight:
- 27.71 LBS
- PRODUCT NAME:
- CYLINDER AND PISTON KIT
- BORE SIZE IMPERIAL:
- 3.500'
- COLOR/FINISH:
- WRINKLE BLACK
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 8.8:1
- DISPLACEMENT:
- 80'
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4.250'
MSRP: $1,231.95Now: $1,108.76Was: $1,231.95 -
On Sale
S&S CYCLE Rocker Box Gasket Set - Shovelhead 90-4311
S&S CYCLE
MSRP: $61.95Now: $55.76Was: $61.95A leaking rocker box gasket will compromise your Shovelhead's oil integrity and engine reliability faster than you'd expect. This S&S Cycle complete gasket set eliminates guesswork by delivering...09341571- SKU:
- 09341571
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- FEATURES:
- FOR '66 - '84 SHOVELHEAD
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER COVER
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
MSRP: $61.95Now: $55.76Was: $61.95 -
On Sale
S&S CYCLE U-Ring - 44-45 mm 16-0241
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95A properly sealed intake manifold is critical for consistent air delivery and maximum performance in forced-induction applications. The S&S CYCLE U-Ring ensures a reliable seal between your manifold...09340665- SKU:
- 09340665
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- THICKNESS METRIC:
- 44 MM - 45 MM
- TYPE:
- INTAKE
- THICKNESS:
- 44 MM - 45 MM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- INTAKE MANIFOLD
- UNITS:
- EACH
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE Base/Head Gaskets - Big Twin 90-1917
S&S CYCLE
MSRP: $112.95Now: $101.66Was: $112.95Big Twin engines demand gaskets that can withstand extreme combustion pressures and temperature cycling without compromise. S&S Cycle's base and head gaskets are engineered with premium materials and...09342105- SKU:
- 09342105
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BORE SIZE:
- 3,500'
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- BORE SIZE IMPERIAL:
- 3.500'
- TYPE:
- CYLINDER BASE
- UNITS:
- KIT
- MATERIAL:
- COPPER
- PRODUCT NAME:
- GASKET KIT
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- CYLINDER HEAD
MSRP: $112.95Now: $101.66Was: $112.95Qty in Cart: 0Quantity:Price:MSRP: $112.95Now: $101.66Was: $112.95Subtotal:
