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
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On Sale
S&S CYCLE Forged Standard Rocker Arm 900-4119FA
S&S CYCLE
MSRP: $84.95Now: $78.15Was: $84.95If you're rebuilding a stock or mildly modified engine, you need rocker arms that won't compromise reliability—and the S&S Cycle Forged Standard delivers exactly that. These 8620 steel forgings...09270032- SKU:
- 09270032
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MOUNTING POSITION:
- FRONT INTAKE
- PRODUCT NAME:
- ROCKER ARM
- MATERIAL:
- 8620 STEEL
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR EXHAUST
- UNITS:
- EACH
MSRP: $84.95Now: $78.15Was: $84.95 -
On Sale
S&S CYCLE Forged Standard Rocker Arm 900-4119RA
S&S CYCLE
MSRP: $84.95Now: $78.15Was: $84.95If you're rebuilding a stock engine or planning mild performance upgrades, you need rocker arms that won't compromise reliability or force you into unnecessary spending. The S&S CYCLE Forged Standard...09270033- SKU:
- 09270033
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MOUNTING POSITION:
- REAR INTAKE
- PRODUCT NAME:
- ROCKER ARM
- MOUNTING POSITION:
- FRONT EXHAUST
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- 8620 STEEL
MSRP: $84.95Now: $78.15Was: $84.95Qty in Cart: 0Quantity:Price:MSRP: $84.95Now: $78.15Was: $84.95Subtotal: -
On Sale
S&S CYCLE Rocker Arm Rebuild Kit - M8 900-1087
S&S CYCLE
MSRP: $167.95Now: $154.51Was: $167.95If you're running M8 Harley power and want rocker arms that can handle aggressive cam profiles and sustained high RPMs, the S&S Cycle Rebuild Kit delivers the strength and precision you need. The...09270039- SKU:
- 09270039
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- ROCKER ARM
- UNITS:
- EACH
MSRP: $167.95Now: $154.51Was: $167.95 -
On Sale
S&S CYCLE Rocker Arm Shafts - M8 900-1090
S&S CYCLE
MSRP: $179.95Now: $165.55Was: $179.95S&S Cycle rocker arm shafts are precision-engineered components that directly impact valve train reliability and performance consistency in high-revving M8 engines. Proper rocker arm geometry ensures...09270041- SKU:
- 09270041
- Availability:
- Ships Same Business Day
- Weight:
- 1.71 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- ROCKER ARM
- UNITS:
- SET
MSRP: $179.95Now: $165.55Was: $179.95 -
On Sale
S&S CYCLE Rocker Arm Guardian Kit - M8 900-1092
S&S CYCLE
MSRP: $917.95Now: $844.51Was: $917.95Rocker arm wear is one of the most overlooked failure points in high-performance M8 engines, often leading to catastrophic valve train damage that sidelines your bike. The S&S CYCLE Rocker Arm...09270042- SKU:
- 09270042
- Availability:
- Ships Same Business Day
- Weight:
- 8.86 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- ROCKER ARM
MSRP: $917.95Now: $844.51Was: $917.95 -
On Sale
S&S CYCLE Quickee Pushrods - Twin Cam/XL 93-5122
S&S CYCLE
MSRP: $209.95Now: $193.15Was: $209.95Installing and adjusting pushrods shouldn't require you to disassemble half your engine. The S&S Cycle Quickee Pushrods eliminate the need to remove rocker covers, cutting installation time...09280002- SKU:
- 09280002
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- STYLE:
- ADJUSTABLE
- UNITS:
- SET OF 4
- MATERIAL:
- CHROMOLY STEEL
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- MODEL:
- QUICKEE
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- PUSHROD SET
MSRP: $209.95Now: $193.15Was: $209.95Qty in Cart: 0Quantity:Price:MSRP: $209.95Now: $193.15Was: $209.95Subtotal: -
On Sale
S&S CYCLE Quickee Pushrods - Big Twin 93-5123
S&S CYCLE
MSRP: $220.95Now: $203.27Was: $220.95If you're tired of removing rocker covers every time you need to adjust or service your pushrods, the S&S Cycle Quickee Pushrods eliminate that headache with a tool-free adjuster design that slides...09280004- SKU:
- 09280004
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- PUSHROD SET
- BASE COLOR:
- SILVER
- UNITS:
- SET OF 4
- MATERIAL:
- CHROMOLY STEEL
- MODEL:
- QUICKEE
- RIDING STYLE:
- STREET
- STYLE:
- ADJUSTABLE
MSRP: $220.95Now: $203.27Was: $220.95 -
On Sale
S&S CYCLE Cylinder Heads - Twin Cam 106-4270
S&S CYCLE
MSRP: $1,995.95Now: $1,836.27Was: $1,995.95If you're looking to unlock real performance gains from your Twin Cam engine, port flow is everything—and S&S Cycle cylinder heads deliver the flow characteristics that support both immediate power...09300068- SKU:
- 09300068
- Availability:
- Ships Same Business Day
- Weight:
- 27.95 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- DISPLACEMENT:
- 89 CC
- COLOR/FINISH:
- SILVER
- UNITS:
- PAIR
MSRP: $1,995.95Now: $1,836.27Was: $1,995.95Qty in Cart: 0Quantity:Price:MSRP: $1,995.95Now: $1,836.27Was: $1,995.95Subtotal: -
On Sale
S&S CYCLE Retro Top End Conversion Kit 106-1070
S&S CYCLE
MSRP: $3,995.95Now: $3,676.27Was: $3,995.95If you're running a Shovelhead and want the distinctive aesthetic of a classic Panhead without a complete engine overhaul, the S&S CYCLE Retro Top End Conversion Kit delivers authentic looks with...09300089- SKU:
- 09300089
- Availability:
- Ships Same Business Day
- Weight:
- 41.00 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER
- BORE SIZE IMPERIAL:
- STOCK BORE CYLINDER
- PRODUCT NAME:
- CONVERSION KIT
- UNITS:
- KIT
MSRP: $3,995.95Now: $3,676.27Was: $3,995.95Qty in Cart: 0Quantity:Price:MSRP: $3,995.95Now: $3,676.27Was: $3,995.95Subtotal: -
On Sale
S&S CYCLE Right Bearing - Red 31-4017
S&S CYCLE
MSRP: $50.95Now: $46.87Was: $50.95A worn or damaged crankcase main bearing directly compromises engine reliability, power delivery, and longevity. This OEM-quality replacement bearing restores proper crankshaft support and reduces...09240497- SKU:
- 09240497
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- APPLICATION:
- PINION SHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- SIZE:
- RED
MSRP: $50.95Now: $46.87Was: $50.95 -
On Sale
S&S CYCLE Right Bearing - Blue - XL 31-4055
S&S CYCLE
MSRP: $40.95Now: $37.67Was: $40.95Harley-Davidson big twin engines demand precision-engineered internal components to maintain reliability and performance under load. The S&S Cycle right bearing assembly is a direct replacement for...09240499- SKU:
- 09240499
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- PINION SHAFT
- SIZE:
- BLUE
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $40.95Now: $37.67Was: $40.95Qty in Cart: 0Quantity:Price:MSRP: $40.95Now: $37.67Was: $40.95Subtotal: -
On Sale
S&S CYCLE Right Bearing - Green - XL 31-4058
S&S CYCLE
MSRP: $40.95Now: $37.67Was: $40.95If your Harley's primary drive is showing signs of wear or you're rebuilding from the ground up, a quality OEM-equivalent main bearing is non-negotiable. The S&S Cycle right bearing assembly delivers...09240500- SKU:
- 09240500
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- APPLICATION:
- PINION SHAFT
- SIZE:
- GREEN
- PRODUCT NAME:
- BEARING
MSRP: $40.95Now: $37.67Was: $40.95 -
On Sale
S&S CYCLE Right Bearing - Red - XL 31-4056
S&S CYCLE
MSRP: $40.95Now: $37.67Was: $40.95The S&S Cycle right bearing assembly is a critical component for maintaining crankcase integrity and proper crankshaft support in your engine. Over time, factory bearings wear, causing increased...09240501- SKU:
- 09240501
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- SIZE:
- RED
- UNITS:
- EACH
- APPLICATION:
- PINION SHAFT
- PRODUCT NAME:
- BEARING
MSRP: $40.95Now: $37.67Was: $40.95Qty in Cart: 0Quantity:Price:MSRP: $40.95Now: $37.67Was: $40.95Subtotal: -
On Sale
S&S CYCLE Right Bearing - White - XL 31-4057
S&S CYCLE
MSRP: $40.95Now: $37.67Was: $40.95A worn or damaged crankcase bearing directly impacts engine reliability and performance—especially in high-RPM applications where precision is non-negotiable. S&S Cycle's right-side main bearing...09240502- SKU:
- 09240502
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- APPLICATION:
- PINION SHAFT
- SIZE:
- WHITE
- UNITS:
- EACH
MSRP: $40.95Now: $37.67Was: $40.95 -
On Sale
S&S CYCLE Cam Bushing - Big Twin 31-4019
S&S CYCLE
MSRP: $16.95Now: $15.59Was: $16.95The outer cam cover bushing is a high-wear component that directly impacts oil sealing integrity and overall engine reliability in Big Twin engines. A worn or damaged bushing allows oil seepage,...09240503- SKU:
- 09240503
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CAM COVER
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
MSRP: $16.95Now: $15.59Was: $16.95 -
On Sale
S&S CYCLE Shift Pin Bushing 31-4031
S&S CYCLE
MSRP: $16.95Now: $15.59Was: $16.95A worn or damaged shift pin bushing compromises your gear selection reliability and can lead to costly transmission damage if left unaddressed. The S&S CYCLE Shift Pin Bushing restores precise...09240504- SKU:
- 09240504
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- PINION SHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
MSRP: $16.95Now: $15.59Was: $16.95 -
On Sale
S&S CYCLE 510V Cam - Big Twin 33-5124
S&S CYCLE
MSRP: $255.95Now: $235.47Was: $255.95The S&S Cycle 510V Cam delivers measurable performance gains without requiring expensive engine modifications or custom machine work. Engineered for Big Twin platforms up to 96 cubic inches, this...09250076- SKU:
- 09250076
- Availability:
- Ships Same Business Day
- Weight:
- 2.06 LBS
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.187'
- APPLICATION:
- INTAKE
- EXHAUST LIFT IMPERIAL:
- 0.510'
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- UNITS:
- EACH
- INTAKE LIFT AT TDC IMPERIAL:
- 0.187'
- APPLICATION:
- EXHAUST
- GRIND:
- 510 SERIES
- INTAKE LIFT IMPERIAL:
- 0.510'
- PRODUCT NAME:
- CAM
MSRP: $255.95Now: $235.47Was: $255.95 -
On Sale
S&S CYCLE Over Size Pinion Gear 33-4160Z
S&S CYCLE
MSRP: $132.95Now: $122.31Was: $132.95If you're running a high-displacement or supercharged Harley-Davidson and experiencing pinion gear wear or slippage, the S&S Cycle Over Size Pinion Gear gives you the durability and engagement your...09250095- SKU:
- 09250095
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- SIZE:
- OVERSIZE
- TYPE:
- CAM
MSRP: $132.95Now: $122.31Was: $132.95 -
On Sale
S&S CYCLE 4 Gear Drive Kit - Twin Cam 33-4285
S&S CYCLE
MSRP: $634.95Now: $584.15Was: $634.95If you're running gear-driven cams on your Twin Cam engine, you need a complete four-gear set to ensure proper valve timing and reliable operation. The S&S Cycle 4 Gear Drive Kit supplies all...09250152- SKU:
- 09250152
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GEAR KIT
- SIZE:
- -
- TYPE:
- CAM
MSRP: $634.95Now: $584.15Was: $634.95 -
On Sale
S&S CYCLE Cam with Gears - 510G - Twin Cam 33-5266
S&S CYCLE
MSRP: $948.95Now: $873.03Was: $948.95Stock timing chains stretch and accumulate lash over time, robbing your Twin Cam engine of valve timing precision and limiting cam lift potential. S&S Cycle's gear drive system eliminates this slop...09250156- SKU:
- 09250156
- Availability:
- Ships Same Business Day
- Weight:
- 5.92 LBS
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.187'
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- GRIND:
- 510 SERIES
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- INTAKE LIFT IMPERIAL:
- 0.510'
- APPLICATION:
- INTAKE
- EXHAUST LIFT IMPERIAL:
- 0.510'
- INTAKE LIFT AT TDC IMPERIAL:
- 0.187'
- TYPE:
- GEAR
MSRP: $948.95Now: $873.03Was: $948.95
