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 Cam - 508 Series - Big Twin 330-0093
S&S CYCLE
MSRP: $255.95Now: $230.36Was: $255.95If you're running a Big Twin and want reliable low-to-mid-range power without the headaches of extensive tuning, the S&S 508 Series Cam delivers. This bolt-on cam has been dyno-tested and proven on...09251017- SKU:
- 09251017
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- EXHAUST LIFT IMPERIAL:
- 0.508'
- TYPE:
- GEAR
- APPLICATION:
- EXHAUST
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.110'
- APPLICATION:
- INTAKE
- INTAKE LIFT IMPERIAL:
- 0.508'
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
- GRIND:
- 508 SERIES
- INTAKE LIFT AT TDC IMPERIAL:
- 0.141'
- RIDING STYLE:
- STREET
MSRP: $255.95Now: $230.36Was: $255.95 -
On Sale
S&S CYCLE 640 Cam - Evolution 33-5108
S&S CYCLE
MSRP: $255.95Now: $230.36Was: $255.95The S&S Cycle 640 Cam delivers the cylinder pressure and rpm range serious builders demand from big-displacement Evolution engines. Engineered through hundreds of dyno and track hours, this cam...09250044- SKU:
- 09250044
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- EXHAUST DURATION IMPERIAL:
- 265°
- APPLICATION:
- EXHAUST
- EXHAUST LIFT IMPERIAL:
- 0.640'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 112.5'
- EXHAUST OPEN IMPERIAL:
- 65°
- EXHAUST CLOSE IMPERIAL:
- 20°
- GRIND:
- 640 SERIES
- INTAKE DURATION IMPERIAL:
- 265°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 107.5°
- INTAKE OPEN IMPERIAL:
- 25°
- PRODUCT NAME:
- CAM
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.192'
- INTAKE CLOSE IMPERIAL:
- 60°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.222'
- INTAKE LIFT IMPERIAL:
- 0.640'
- TYPE:
- GEAR
- UNITS:
- EACH
MSRP: $255.95Now: $230.36Was: $255.95 -
On Sale
S&S CYCLE Right Bearing - Blue 31-4018
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95When your engine's crankcase main bearing starts showing wear, power delivery suffers and catastrophic failure becomes a real risk. The S&S Cycle Right Bearing is a precision-engineered replacement...09240495- SKU:
- 09240495
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- UNITS:
- EACH
- APPLICATION:
- PINION SHAFT
- SIZE:
- BLUE
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
MSRP: $50.95Now: $45.86Was: $50.95 -
On Sale
S&S CYCLE Oil Pump with Cam - Plate Twin Cam 310-0732
S&S CYCLE
MSRP: $836.95Now: $753.26Was: $836.95Stock oil pumps fail catastrophically under high-RPM demand, leaving you stranded or facing engine damage. The S&S Cycle oil pump delivers superior scavenging efficiency and structural integrity...09320111- SKU:
- 09320111
- Availability:
- Ships Same Business Day
- Weight:
- 5.21 LBS
- UNITS:
- KIT
- BASE COLOR:
- BLUE
- MATERIAL:
- ALUMINUM
- MODEL:
- TC3
- PRODUCT NAME:
- PLATE
- RIDING STYLE:
- STREET
- TYPE:
- CAM SUPPORT
- TYPE:
- OIL PUMP
- COLOR/FINISH:
- BLUE
MSRP: $836.95Now: $753.26Was: $836.95 -
On Sale
S&S CYCLE Cam Chest Kit - 475C - M8 310-1004B
S&S CYCLE
MSRP: $1,721.95Now: $1,549.76Was: $1,721.95If you're running high-RPM applications on an M8 platform, oil management directly impacts reliability and longevity. The S&S Cycle 475C Cam Chest Kit delivers independent scavenging,...09251356- SKU:
- 09251356
- Availability:
- Ships Same Business Day
- Weight:
- 10.85 LBS
- FEATURES:
- OIL COOLED
- TYPE:
- CHAIN
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- GRIND:
- 475C
- PRODUCT NAME:
- CAMCHEST KIT
- UNITS:
- KIT
MSRP: $1,721.95Now: $1,549.76Was: $1,721.95Qty in Cart: 0Quantity:Price:MSRP: $1,721.95Now: $1,549.76Was: $1,721.95Subtotal: -
On Sale
S&S CYCLE Cam Chest Kit - 475C - M8 310-1012B
S&S CYCLE
MSRP: $1,721.95Now: $1,549.76Was: $1,721.95The S&S Cycle 475C Cam Chest Kit is engineered for riders who demand reliable oil management under extreme engine stress. This billet aluminum assembly eliminates the flow restrictions and debris...09251360- SKU:
- 09251360
- Availability:
- Ships Same Business Day
- Weight:
- 11.30 LBS
- FEATURES:
- OIL COOLED
- TYPE:
- CHAIN
- COLOR/FINISH:
- BLACK
- GRIND:
- 475C
- PRODUCT NAME:
- CAMCHEST KIT
- COLOR/FINISH:
- GLOSS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $1,721.95Now: $1,549.76Was: $1,721.95Qty in Cart: 0Quantity:Price:MSRP: $1,721.95Now: $1,549.76Was: $1,721.95Subtotal: -
On Sale
S&S CYCLE Pinion Gear 33-4145
S&S CYCLE
MSRP: $112.95Now: $101.66Was: $112.95A precision pinion gear is fundamental to reliable drivetrain performance, and this S&S Cycle unit delivers the consistency that separates dependable builds from frequent failures. Heat-treated and...DS194249- SKU:
- DS194249
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GEAR
- TYPE:
- PINION
- SIZE IMPERIAL:
- 1.4721' - 1.4729'
- UNITS:
- EACH
MSRP: $112.95Now: $101.66Was: $112.95 -
On Sale
S&S CYCLE Adjustable Pushrods 930-0051
S&S CYCLE
MSRP: $215.95Now: $194.36Was: $215.95Stock pushrods limit your engine's potential, introducing deflection and geometric inconsistencies that rob you of horsepower and reliable valve timing. S&S Cycle's adjustable pushrods restore...09280049- SKU:
- 09280049
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- PRODUCT NAME:
- PUSHROD SET
- UNITS:
- 4 PACK
- MATERIAL:
- CHROMOLY STEEL
- RIDING STYLE:
- STREET
- STYLE:
- ADJUSTABLE
MSRP: $215.95Now: $194.36Was: $215.95 -
On Sale
S&S CYCLE 514 Series Cam - Big Twin 33-5051
S&S CYCLE
MSRP: $254.95Now: $229.46Was: $254.95The S&S Cycle 514 Series Cam delivers predictable, dyno-tested performance across the RPM range where your Big Twin engine spends most of its time. Engineered for serious builders who demand...DS199187- SKU:
- DS199187
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- APPLICATION:
- INTAKE
- INTAKE LIFT IMPERIAL:
- 0.514'
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.169'
- RIDING STYLE:
- STREET
- EXHAUST LIFT IMPERIAL:
- 0.514'
- GRIND:
- 514 SERIES
- INTAKE LIFT AT TDC IMPERIAL:
- 0.169'
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
MSRP: $254.95Now: $229.46Was: $254.95Qty in Cart: 0Quantity:Price:MSRP: $254.95Now: $229.46Was: $254.95Subtotal: -
On Sale
S&S CYCLE 514 Series Cam - Big Twin 33-5052
S&S CYCLE
MSRP: $254.95Now: $229.46Was: $254.95The S&S Cycle 514 Series Cam delivers the broad powerband and reliability you need when you're serious about Big Twin performance. Dyno-tested and track-proven across hundreds of hours, this cam...DS199188- SKU:
- DS199188
- Availability:
- Ships Same Business Day
- Weight:
- 1.94 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- CAM
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.169'
- GRIND:
- 514 SERIES
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- EXHAUST LIFT IMPERIAL:
- 0.514'
- INTAKE LIFT AT TDC IMPERIAL:
- 0.169'
- INTAKE LIFT IMPERIAL:
- 0.514'
- UNITS:
- EACH
MSRP: $254.95Now: $229.46Was: $254.95 -
On Sale
S&S CYCLE 560S Cam - Big Twin 33-5060
S&S CYCLE
MSRP: $255.95Now: $230.36Was: $255.95The S&S Cycle 560S cam is engineered for Big Twin engines that demand measurable power gains in the mid-to-high RPM range. If you're running 10:1+ compression and want a cam with proven dyno, street,...DS199190- SKU:
- DS199190
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- APPLICATION:
- INTAKE
- GRIND:
- 560 SERIES
- EXHAUST LIFT IMPERIAL:
- 0.560'
- RIDING STYLE:
- STREET
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.172'
- INTAKE LIFT AT TDC IMPERIAL:
- 0.176'
- INTAKE LIFT IMPERIAL:
- 0.560'
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
MSRP: $255.95Now: $230.36Was: $255.95 -
On Sale
S&S CYCLE Pushrod Cover Keeper Set - 3.33" 93-4106
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95Stock pushrod keepers often fall short in custom engine builds where non-standard configurations demand precision fitment. The S&S Cycle Pushrod Cover Keeper Set delivers the clearance and durability...09280058- SKU:
- 09280058
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- COLOR/FINISH:
- CHROME
- LENGTH IMPERIAL:
- 3.330'
- PRODUCT NAME:
- KEEPER
- TYPE:
- PUSHROD COVER
- RIDING STYLE:
- STREET
- UNITS:
- SET
- LENGTH:
- 3,330'
- MATERIAL:
- STEEL
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE Pushrod Cover Keeper Set - 2.8" 93-4115
S&S CYCLE
MSRP: $40.95Now: $36.86Was: $40.95When building a custom engine or running non-standard pushrod configurations, stock keepers often fall short—leaving critical components unsecured. The S&S CYCLE Pushrod Cover Keeper Set ensures...09280078- SKU:
- 09280078
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- STEEL
- UNITS:
- SET
- COLOR/FINISH:
- CHROME
- LENGTH:
- 2,80'
- LENGTH IMPERIAL:
- 2.80'
- PRODUCT NAME:
- KEEPER
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD COVER
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
S&S CYCLE Pushrod Cover O-Ring Kit 93-4022
S&S CYCLE
MSRP: $12.95Now: $11.66Was: $12.95Pushrod cover O-rings wear out with heat cycles and engine vibration, leading to oil seepage and potential engine damage if left unaddressed. This complete S&S Cycle kit eliminates guesswork by...09280081- SKU:
- 09280081
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- O-RING KIT
- TYPE:
- PUSHROD COVER
- RIDING STYLE:
- STREET
MSRP: $12.95Now: $11.66Was: $12.95 -
On Sale
S&S CYCLE Rocker Arm Rebuild Kit 90-4104
S&S CYCLE
MSRP: $163.95Now: $147.56Was: $163.95If you're running an XL or Buell and want to maximize valve train reliability under high RPM conditions, the S&S CYCLE Rocker Arm Rebuild Kit 90-4104 delivers the precision engineering your engine...09270001- SKU:
- 09270001
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- REBUILD KIT
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- FRONT
- TYPE:
- ROCKER ARM
- UNITS:
- KIT
MSRP: $163.95Now: $147.56Was: $163.95 -
On Sale
S&S CYCLE Roller Rocker Arms 900-4098A
S&S CYCLE
MSRP: $695.95Now: $626.36Was: $695.95Stock rocker arms are the weak link in high-revving Shovelhead engines—they flex under load, lose valve timing precision, and wear prematurely. S&S Cycle's Roller Rocker Arms replace that compromise...09270028- SKU:
- 09270028
- Availability:
- Ships Same Business Day
- Weight:
- 2.86 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- ROCKER ARM
- STYLE:
- FORGED
- MATERIAL:
- 8620 STEEL
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- MOUNTING POSITION:
- REAR
MSRP: $695.95Now: $626.36Was: $695.95 -
On Sale
S&S CYCLE Rocker Arm Shaft - Twin Cam/XL 90-4006
S&S CYCLE
MSRP: $16.95Now: $15.26Was: $16.95A worn or damaged rocker arm shaft compromises valve train precision and can lead to catastrophic engine failure. The S&S Cycle rocker arm shaft restores OEM-spec alignment and clearances, ensuring...09270029- SKU:
- 09270029
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- SHAFT
- TYPE:
- ROCKER ARM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $16.95Now: $15.26Was: $16.95Qty in Cart: 0Quantity:Price:MSRP: $16.95Now: $15.26Was: $16.95Subtotal: -
On Sale
S&S CYCLE Rocker Arm Bushing 90-4014
S&S CYCLE
MSRP: $14.95Now: $13.46Was: $14.95Rocker arm bushings are critical wear items that directly impact valve actuation precision and engine reliability. A worn bushing creates unwanted slack in your valve train, leading to inconsistent...09270030- SKU:
- 09270030
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- FRONT
- TYPE:
- ROCKER ARM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $14.95Now: $13.46Was: $14.95Qty in Cart: 0Quantity:Price:MSRP: $14.95Now: $13.46Was: $14.95Subtotal: -
On Sale
S&S CYCLE Non-Roller Rocker Arms 900-4119A
S&S CYCLE
MSRP: $334.95Now: $301.46Was: $334.95If you're rebuilding a stock engine or planning modest performance gains, S&S Cycle's Non-Roller Rocker Arms deliver the durability and reliability you need without the complexity of needle bearings...09270014- SKU:
- 09270014
- Availability:
- Ships Same Business Day
- Weight:
- 2.76 LBS
- RIDING STYLE:
- STREET
- TYPE:
- STANDARD
- MATERIAL:
- STEEL
- APPLICATION:
- EXHAUST
- MATERIAL:
- FORGED
- PRODUCT NAME:
- ROCKER ARM
- STYLE:
- FORGED
- UNITS:
- SET OF 4
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
MSRP: $334.95Now: $301.46Was: $334.95 -
On Sale
S&S CYCLE Roller Rocker Arms 900-4320A
S&S CYCLE
MSRP: $649.95Now: $584.96Was: $649.95Stock rocker arms limit your engine's potential, introducing flex and wear under high RPM stress. S&S Cycle's roller rocker arms deliver superior load distribution and durability through a .750"...09270016- SKU:
- 09270016
- Availability:
- Ships Same Business Day
- Weight:
- 2.61 LBS
- MATERIAL:
- 4140 STEEL
- TYPE:
- ROLLER
- MOUNTING POSITION:
- FRONT
- UNITS:
- 4 PACK
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
- STYLE:
- FORGED
MSRP: $649.95Now: $584.96Was: $649.95
