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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DRAG SPECIALTIES Points Cover - Chrome/Gold/Black I30-0223GA
DRAG SPECIALTIES
$44.47A points cover serves as both a functional engine component and a statement piece on your motorcycle. This Drag Specialties cover protects your ignition points from moisture and debris while...09401646- SKU:
- 09401646
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- GOLD
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- STYLE:
- LIVE TO RIDE
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$44.47Qty in Cart: 0Quantity:Price:$44.47Subtotal: -
DRAG SPECIALTIES Motor Mount - Heavy Duty 72874
DRAG SPECIALTIES
$73.09Engine vibration and drivetrain shock wear down stock motor mounts quickly, compromising both drivability and longevity. The Drag Specialties Heavy Duty 72874 replaces that compromised OEM mount with...09330135- SKU:
- 09330135
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- PRODUCT NAME:
- MOUNT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- TYPE:
- MOTOR
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
$73.09Qty in Cart: 0Quantity:Price:$73.09Subtotal: -
On Sale
S&S CYCLE Valve Spring Kit - Big Twin 90-2053
S&S CYCLE
MSRP: $248.95Now: $229.03Was: $248.95Upgrading your Big Twin valve springs is essential for maximizing cam performance and preventing valve float at high RPMs. The S&S CYCLE Valve Spring Kit delivers the seat pressure and durability...DS199729- SKU:
- DS199729
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- COLLAR MATERIAL:
- ALUMINUM
- SPRING LIFT IMPERIAL:
- 0.550'
- SPRING LIFT:
- 0,550'
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- STREET
- SPRING SEAT PRESSURE:
- 140 LB
- UNITS:
- KIT
MSRP: $248.95Now: $229.03Was: $248.95 -
On Sale
S&S CYCLE Oil Pump O-Ring Kit - Twin Cam 500-0326
S&S CYCLE
MSRP: $11.95Now: $10.99Was: $11.95Oil pump o-ring degradation is a common failure point in Twin Cam engines, leading to loss of oil pressure, internal leaks, and potential engine damage. The S&S Cycle Oil Pump O-Ring Kit provides...09351015- SKU:
- 09351015
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- UNITS:
- KIT
- APPLICATION:
- OIL PUMP
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
MSRP: $11.95Now: $10.99Was: $11.95 -
On Sale
S&S CYCLE High Compression Piston Kit 920-0115
S&S CYCLE
MSRP: $521.95Now: $480.19Was: $521.95If you're serious about extracting every bit of performance from your engine without sacrificing low-end torque, a high-compression piston kit is one of the most direct upgrades available. The S&S...09103980- SKU:
- 09103980
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- TYPE:
- HIGH COMPRESSION
- BORE - OVERSIZE:
- +0,010'
- COMPRESSION RATIO IMPERIAL:
- 10.6:1
- DISPLACEMENT:
- 110'
- UNITS:
- KIT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 4.010'
- PISTON HEAD SHAPE:
- RAISED DOME
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
MSRP: $521.95Now: $480.19Was: $521.95Qty in Cart: 0Quantity:Price:MSRP: $521.95Now: $480.19Was: $521.95Subtotal: -
On Sale
S&S CYCLE Replacement Rings 94-1221X
S&S CYCLE
MSRP: $54.95Now: $50.55Was: $54.95Piston rings are the critical seal between your piston and cylinder wall—when they wear, compression drops, blow-by increases, and power suffers. S&S Cycle replacement rings restore that factory seal...09120598- SKU:
- 09120598
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
MSRP: $54.95Now: $50.55Was: $54.95Qty in Cart: 0Quantity:Price:MSRP: $54.95Now: $50.55Was: $54.95Subtotal: -
On Sale
S&S CYCLE Replacement Rings 94-2218X
S&S CYCLE
MSRP: $64.95Now: $59.75Was: $64.95Piston rings are critical wear items that directly impact compression, oil control, and engine efficiency. As your engine accumulates miles, ring wear compromises sealing and increases blow-by,...09120004- SKU:
- 09120004
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- PISTON SIZE IMPERIAL:
- +0.020'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.500'
MSRP: $64.95Now: $59.75Was: $64.95Qty in Cart: 0Quantity:Price:MSRP: $64.95Now: $59.75Was: $64.95Subtotal: -
On Sale
S&S CYCLE Replacement Rings 94-2203X
S&S CYCLE
MSRP: $64.95Now: $59.75Was: $64.95Piston rings are critical wear items that directly impact compression, oil control, and overall engine performance. Factory rings degrade over time, leading to blow-by, increased oil consumption, and...09120086- SKU:
- 09120086
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- PRODUCT NAME:
- PISTON RING
- BORE SIZE IMPERIAL:
- 3.4375'
- PISTON SIZE IMPERIAL:
- +0.030'
- UNITS:
- SET
MSRP: $64.95Now: $59.75Was: $64.95Qty in Cart: 0Quantity:Price:MSRP: $64.95Now: $59.75Was: $64.95Subtotal: -
On Sale
S&S CYCLE Replacement Rings 94-2207X
S&S CYCLE
MSRP: $64.95Now: $59.75Was: $64.95Worn or damaged piston rings directly compromise engine compression, power output, and fuel efficiency—issues that no amount of tuning can fully overcome. S&S Cycle Replacement Rings restore proper...09120090- SKU:
- 09120090
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PISTON SIZE IMPERIAL:
- +0.070'
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.4375'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
MSRP: $64.95Now: $59.75Was: $64.95Qty in Cart: 0Quantity:Price:MSRP: $64.95Now: $59.75Was: $64.95Subtotal: -
On Sale
S&S CYCLE CAM 350G M8 17- 330-0625
S&S CYCLE
MSRP: $458.95Now: $422.23Was: $458.95Eliminate the weak link in your M8 valvetrain. S&S Cycle's 350G gear drive cam replaces the stock chain and tensioner with a precision-machined gear system that maintains consistent valve timing...09251159- SKU:
- 09251159
- Availability:
- Ships Same Business Day
- Weight:
- 4.20 LBS
- EXHAUST LIFT IMPERIAL:
- 0.374'
- PRODUCT NAME:
- CAM
- APPLICATION:
- INTAKE
- INTAKE LIFT IMPERIAL:
- 0.350'
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- APPLICATION:
- EXHAUST
- UNITS:
- KIT
MSRP: $458.95Now: $422.23Was: $458.95Qty in Cart: 0Quantity:Price:MSRP: $458.95Now: $422.23Was: $458.95Subtotal: -
DRAG SPECIALTIES Braided Oil/Fuel Line - Stainless Steel - 5/16" - 6' 096616-HC9
DRAG SPECIALTIES
$50.83Braided stainless steel lines eliminate the risk of fuel and oil degradation from ethanol blends while providing superior durability under high-pressure applications. The reinforced construction...DS096616- SKU:
- DS096616
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- EACH
- COLOR/FINISH:
- STAINLESS STEEL
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- HOSE
- HOSE SIZE:
- -5
- INSIDE DIAMETER METRIC:
- 7.9 MM
- LENGTH IMPERIAL:
- 6'
- LENGTH METRIC:
- 183 CM
- TYPE:
- FUEL
- BASE FINISH:
- NATURAL
- INSIDE DIAMETER IMPERIAL:
- 5/16'
- STYLE:
- BRAIDED
$50.83Qty in Cart: 0Quantity:Price:$50.83Subtotal: -
DRAG SPECIALTIES Braided Hose - Black - 3/8" - 6' 096632-HC9
DRAG SPECIALTIES
$56.13Whether you're running fuel, coolant, oil, or other fluid systems, a quality braided hose with proven durability is non-negotiable in high-performance applications. This DRAG SPECIALTIES hose...DS096673- SKU:
- DS096673
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- LENGTH IMPERIAL:
- 6'
- LENGTH METRIC:
- 183 CM
- MATERIAL:
- NYLON
- INSIDE DIAMETER IMPERIAL:
- 3/8'
- STYLE:
- BRAIDED
- TYPE:
- FUEL
- COLOR/FINISH:
- BLACK
- HOSE SIZE:
- -6
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- BASE COLOR:
- BLACK
- INSIDE DIAMETER METRIC:
- 9.5 MM
- PRODUCT NAME:
- HOSE
- UNITS:
- EACH
$56.13 -
DRAG SPECIALTIES Braided Hose - Black - 3/8" - 25' 096635-HC9
DRAG SPECIALTIES
$209.83Reliable fluid transfer is non-negotiable in high-performance applications, and this braided hose delivers the durability your system demands. The black nylon braid provides abrasion resistance and a...DS096676- SKU:
- DS096676
- Availability:
- Ships Same Business Day
- Weight:
- 2.31 LBS
- HOSE SIZE:
- -6
- PRODUCT NAME:
- HOSE
- STYLE:
- BRAIDED
- INSIDE DIAMETER METRIC:
- 9.5 MM
- LENGTH IMPERIAL:
- 25'
- LENGTH METRIC:
- 7.62 M
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- INSIDE DIAMETER IMPERIAL:
- 3/8'
- BASE COLOR:
- BLACK
- MATERIAL:
- NYLON
- TYPE:
- FUEL
$209.83 -
DRAG SPECIALTIES Braided Oil/Fuel Line - Stainless Steel - 1/4" - 3' 096605-HC9
DRAG SPECIALTIES
$25.70Braided stainless steel lines eliminate the risk of fuel and oil seepage that plagues rubber hoses under high-performance conditions. Whether you're running a street machine or prepping for the...DS096605- SKU:
- DS096605
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- STAINLESS STEEL
- HOSE SIZE:
- -4
- LENGTH IMPERIAL:
- 3'
- INSIDE DIAMETER IMPERIAL:
- 1/4'
- STYLE:
- BRAIDED
- TYPE:
- FUEL
- BASE FINISH:
- NATURAL
- INSIDE DIAMETER METRIC:
- 6.4 MM
- LENGTH METRIC:
- 91 CM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- HOSE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$25.70Qty in Cart: 0Quantity:Price:$25.70Subtotal: -
DRAG SPECIALTIES Oil Tank - Chrome - Sportster 22-0055
DRAG SPECIALTIES
$330.67Whether you're restoring a vintage Sportster or replacing a damaged tank, a quality oil tank is critical to maintaining proper lubrication and engine health. This Drag Specialties chrome unit...DS310102- SKU:
- DS310102
- Availability:
- Ships Same Business Day
- Weight:
- 4.38 LBS
- CAPACITY IMPERIAL:
- 3 US QUART
- MATERIAL:
- STEEL
- PRODUCT NAME:
- OIL TANK
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- BASE COLOR:
- SILVER
- CAPACITY METRIC:
- 2.8 LITER
- UNITS:
- EACH
$330.67Qty in Cart: 0Quantity:Price:$330.67Subtotal: -
On Sale
S&S CYCLE Oil Pump Return Plug - Twin Cam 310-0564
S&S CYCLE
MSRP: $11.95Now: $10.99Was: $11.95If you're running an S&S oil pump system on your Twin Cam engine, a worn or damaged return plug can compromise your oil circulation and lead to costly internal damage. This OEM replacement plug...09320210- SKU:
- 09320210
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
MSRP: $11.95Now: $10.99Was: $11.95Qty in Cart: 0Quantity:Price:MSRP: $11.95Now: $10.99Was: $11.95Subtotal: -
On Sale
S&S CYCLE Cylinder Kit - M8 910-0733
S&S CYCLE
MSRP: $1,559.95Now: $1,435.15Was: $1,559.95If you're running an M8 and want measurable horsepower gains without splitting your cases, the S&S CYCLE Big Bore kit delivers straightforward performance. This bolt-on cylinder swap pairs seamlessly...09310876- SKU:
- 09310876
- Availability:
- Ships Same Business Day
- Weight:
- 28.80 LBS
- COLOR/FINISH:
- BLACK GRANITE
- MATERIAL:
- IRON
- DISPLACEMENT:
- 128'
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PRODUCT NAME:
- CYLINDER KIT
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- STYLE:
- BIG BORE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
MSRP: $1,559.95Now: $1,435.15Was: $1,559.95Qty in Cart: 0Quantity:Price:MSRP: $1,559.95Now: $1,435.15Was: $1,559.95Subtotal: -
On Sale
S&S CYCLE Replacement Rings 94-1291X
S&S CYCLE
MSRP: $61.95Now: $56.99Was: $61.95If you're running S&S pistons in your high-performance engine, keeping factory OEM replacement rings on hand ensures you can quickly restore compression and seal integrity without downtime. Quality...DS751312- SKU:
- DS751312
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- PISTON SIZE IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.875'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
MSRP: $61.95Now: $56.99Was: $61.95Qty in Cart: 0Quantity:Price:MSRP: $61.95Now: $56.99Was: $61.95Subtotal: -
On Sale
S&S CYCLE Easy Start Cam Kit - Twin Cam 106-5221
S&S CYCLE
MSRP: $1,070.95Now: $985.27Was: $1,070.95Harsh starter demands and drained batteries are common casualties of high-compression Harley engines—but they don't have to be. The S&S Cycle Easy Start Cam Kit solves this by reducing crank...09250449- SKU:
- 09250449
- Availability:
- Ships Same Business Day
- Weight:
- 6.10 LBS
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 250°
- EXHAUST OPEN IMPERIAL:
- 55°
- GRIND:
- 570 SERIES
- INTAKE LIFT IMPERIAL:
- 0.570'
- INTAKE OPEN IMPERIAL:
- 20°
- TYPE:
- GEAR
- APPLICATION:
- EXHAUST
- EXHAUST LIFT IMPERIAL:
- 0.570'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 107.5°
- FEATURES:
- INCLUDES INSTALLATION KIT
- INTAKE LOBE CENTERLINE IMPERIAL:
- 100°
- MODEL:
- EASY START
- EXHAUST CLOSE IMPERIAL:
- 20°
- INTAKE CLOSE IMPERIAL:
- 40°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.187'
- UNITS:
- KIT
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.179'
- INTAKE DURATION IMPERIAL:
- 240°
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
MSRP: $1,070.95Now: $985.27Was: $1,070.95Qty in Cart: 0Quantity:Price:MSRP: $1,070.95Now: $985.27Was: $1,070.95Subtotal: -
On Sale
S&S CYCLE Oil Pump Supply Rotor - TC3 310-0561
S&S CYCLE
MSRP: $61.95Now: $56.99Was: $61.95A properly functioning oil pump is non-negotiable for Twin Cam engine reliability. The S&S Cycle Oil Pump Supply Rotor ensures consistent oil delivery under demanding conditions, protecting critical...09210561- SKU:
- 09210561
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- ROTOR
- UNITS:
- KIT
- MODEL:
- TC3
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
MSRP: $61.95Now: $56.99Was: $61.95Qty in Cart: 0Quantity:Price:MSRP: $61.95Now: $56.99Was: $61.95Subtotal:
