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
ANDREWS TW9 Grind Cams - Twin Cam 216309
ANDREWS
MSRP: $415.95Now: $374.36Was: $415.95The Andrews TW9 Grind Cams unlock measurable power gains across your Twin Cam's entire operating range, from low-rpm grunt to high-rpm pull. Computer-aided design and premium alloy steel construction...09250597- SKU:
- 09250597
- Availability:
- Ships Same Business Day
- Weight:
- 2.86 LBS
- INTAKE OPEN IMPERIAL:
- 2°
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 8°
- EXHAUST DURATION IMPERIAL:
- 252°
- EXHAUST LIFT IMPERIAL:
- 0.486'
- EXHAUST OPEN IMPERIAL:
- 40°
- GRIND:
- 9 SERIES
- INTAKE CLOSE IMPERIAL:
- 28°
- PRODUCT NAME:
- CAM KIT
- APPLICATION:
- EXHAUST
- INTAKE DURATION IMPERIAL:
- 242°
- INTAKE LIFT IMPERIAL:
- 0.492'
MSRP: $415.95Now: $374.36Was: $415.95 -
On Sale
ANDREWS Cams - 48 Series - 2006 Dyna - 2007-2017 Twin Cam 216348
ANDREWS
MSRP: $415.95Now: $374.36Was: $415.95If you're running a stock-displacement bagger and want to unlock low-end grunt without chasing high RPM thrills, the ANDREWS 48 Series cams deliver where it matters most. These broad-tip designs...09250598- SKU:
- 09250598
- Availability:
- Ships Same Business Day
- Weight:
- 3.21 LBS
- INTAKE DURATION IMPERIAL:
- 222°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.153'
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- INTAKE CLOSE IMPERIAL:
- 29°
- INTAKE LIFT IMPERIAL:
- 0.548'
- APPLICATION:
- INTAKE
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.163'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 104°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 98°
- PRODUCT NAME:
- CAM KIT
- TYPE:
- CHAIN
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 15°
- EXHAUST DURATION IMPERIAL:
- 238°
- EXHAUST LIFT IMPERIAL:
- 0.548'
- EXHAUST OPEN IMPERIAL:
- 43°
- GRIND:
- 48 SERIES
- INTAKE OPEN IMPERIAL:
- 13°
MSRP: $415.95Now: $374.36Was: $415.95Qty in Cart: 0Quantity:Price:MSRP: $415.95Now: $374.36Was: $415.95Subtotal: -
On Sale
ANDREWS Cams - PB+ - XL 214045
ANDREWS
MSRP: $633.95Now: $570.56Was: $633.95The ANDREWS Cams PB+ XL 214045 delivers measurable horsepower and torque gains without requiring expensive cylinder head modifications, making it an ideal bolt-in upgrade for builders seeking...09250591- SKU:
- 09250591
- Availability:
- Ships Same Business Day
- Weight:
- 4.66 LBS
- APPLICATION:
- INTAKE
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.208'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 96°
- EXHAUST CLOSE IMPERIAL:
- 31°
- EXHAUST DURATION IMPERIAL:
- 254°
- GRIND:
- PB+
- INTAKE CLOSE IMPERIAL:
- 40°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.208'
- INTAKE LIFT IMPERIAL:
- 0.400'
- INTAKE OPEN IMPERIAL:
- 34°
- APPLICATION:
- EXHAUST
- EXHAUST OPEN IMPERIAL:
- 43°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 93°
- EXHAUST LIFT IMPERIAL:
- 0.410'
- INTAKE DURATION IMPERIAL:
- 254°
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- UNITS:
- SET
MSRP: $633.95Now: $570.56Was: $633.95 -
On Sale
EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer A-24009-06
EASTERN MOTORCYCLE PARTS
MSRP: $38.95Now: $35.44Was: $38.95Precise sprocket alignment is non-negotiable in high-performance drivetrain systems—even minor misalignment leads to accelerated wear, noise, and power loss. The EASTERN MOTORCYCLE PARTS Sprocket...09500358- SKU:
- 09500358
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHAFT SPACER
- TYPE:
- SPROCKET
- UNITS:
- EACH
MSRP: $38.95Now: $35.44Was: $38.95 -
On Sale
COMETIC Head Gasket - 3 5/8" - .040" C9985
COMETIC
MSRP: $61.90Now: $55.71Was: $61.90A quality head gasket is the foundation of reliable engine sealing—without it, you're risking compression loss, coolant leaks, and catastrophic engine failure. The COMETIC C9985 uses multi-layer...09340797- SKU:
- 09340797
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
- BORE SIZE:
- 3,625'
- BORE SIZE IMPERIAL:
- 3.625'
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
- THICKNESS:
- 1,02 MM (0,040')
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
MSRP: $61.90Now: $55.71Was: $61.90 -
On Sale
COMETIC Complete Gasket Kit - 1200 XL C9758F
COMETIC
MSRP: $279.25Now: $251.33Was: $279.25A complete gasket kit eliminates the guesswork when rebuilding or refreshing your 1200 XL engine—one order covers every critical seal without hunting for individual components. Cometic's multi-layer...09340806- SKU:
- 09340806
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- BORE SIZE:
- 3,500'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,040'
- BORE SIZE IMPERIAL:
- 3.500'
- THICKNESS METRIC:
- 1.02 MM
- UNITS:
- KIT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
MSRP: $279.25Now: $251.33Was: $279.25 -
On Sale
COMETIC Complete Gasket Kit - 1550 - .040 C9920
COMETIC
MSRP: $209.95Now: $188.96Was: $209.95A complete gasket kit eliminates the guesswork and potential for leaks when you're doing a full engine rebuild or major overhaul. Rather than chasing down individual gaskets from multiple suppliers,...09340807- SKU:
- 09340807
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
- THICKNESS METRIC:
- 1.02 MM
- TYPE:
- COMPLETE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,040'
- BORE SIZE:
- 3,875'
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
MSRP: $209.95Now: $188.96Was: $209.95Qty in Cart: 0Quantity:Price:MSRP: $209.95Now: $188.96Was: $209.95Subtotal: -
On Sale
COMETIC Complete Gasket Kit - 4 Speed C9964
COMETIC
MSRP: $190.00Now: $171.00Was: $190.00A complete gasket kit is the foundation of a reliable engine assembly—sealing failures lead to oil leaks, coolant loss, and catastrophic engine damage. The COMETIC C9964 eliminates guesswork by...09340809- SKU:
- 09340809
- Availability:
- Ships Same Business Day
- Weight:
- 1.76 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- BORE SIZE:
- 3,500'
- BORE SIZE IMPERIAL:
- 3.500'
- UNITS:
- KIT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
MSRP: $190.00Now: $171.00Was: $190.00 -
On Sale
COMETIC Complete Gasket Kit - 5 Speed C9965
COMETIC
MSRP: $274.00Now: $246.60Was: $274.00A complete gasket failure can compromise your entire engine's integrity and cost you a race or thousands in repairs. The COMETIC C9965 Complete Gasket Kit eliminates the guesswork by pairing...09340811- SKU:
- 09340811
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- BORE SIZE:
- 3,500'
- BORE SIZE IMPERIAL:
- 3.500'
- UNITS:
- KIT
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
MSRP: $274.00Now: $246.60Was: $274.00 -
On Sale
COMETIC Complete Gasket Kit - 74" - FL C9900
COMETIC
MSRP: $222.55Now: $200.30Was: $222.55A complete gasket kit is your insurance policy against oil seepage, coolant leaks, and catastrophic failures that sideline your bike. COMETIC's 74" FL gasket kit uses application-specific...09340812- SKU:
- 09340812
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- BORE SIZE:
- 3,437'
- MATERIAL:
- STEEL
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE IMPERIAL:
- 3.437'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
MSRP: $222.55Now: $200.30Was: $222.55Qty in Cart: 0Quantity:Price:MSRP: $222.55Now: $200.30Was: $222.55Subtotal: -
On Sale
COMETIC Head Gasket - .040" - MLS C9205
COMETIC
MSRP: $61.90Now: $55.71Was: $61.90A head gasket failure can cost you a race, a season, or worse—your engine. The COMETIC C9205 MLS head gasket delivers the reliable sealing and durability demanded by serious racers and high-output...09341402- SKU:
- 09341402
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- BORE SIZE:
- 3,000'
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
- THICKNESS:
- 1,02 MM (0,040')
- BORE SIZE IMPERIAL:
- 3.000'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
MSRP: $61.90Now: $55.71Was: $61.90Qty in Cart: 0Quantity:Price:MSRP: $61.90Now: $55.71Was: $61.90Subtotal: -
On Sale
COMETIC Main Drive Gear Seal C9362
COMETIC
Now: $7.56Was: $8.40A leaking main drive gear seal compromises engine efficiency and risks catastrophic damage to internal components. The COMETIC C9362 is engineered to maintain a reliable barrier against oil seepage,...09341403- SKU:
- 09341403
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- SPROCKET SHAFT
- RIDING STYLE:
- STREET
- MATERIAL:
- VITON
- UNITS:
- 5 PACK
Now: $7.56Was: $8.40Qty in Cart: 0Quantity:Price:Now: $7.56Was: $8.40Subtotal: -
On Sale
COMETIC Gasket Kit - EVO/Big Twin C9130
COMETIC
MSRP: $110.20Now: $99.18Was: $110.20Gasket failure on your EVO or Big Twin isn't just an inconvenience—it's catastrophic. Hot spots in the combustion chamber and uneven heat dissipation are the primary culprits behind blown gaskets and...09341203- SKU:
- 09341203
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- RUBBER
- BORE SIZE:
- 3,500'
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- MATERIAL:
- STAINLESS STEEL
- TYPE:
- TOP END
MSRP: $110.20Now: $99.18Was: $110.20 -
On Sale
COMETIC Complete Gasket Kit - 1200 EVO - .040" C9133
COMETIC
MSRP: $202.60Now: $182.34Was: $202.60A complete gasket failure can sideline your 1200 EVO and cost you critical track time or riding season. This COMETIC kit eliminates guesswork by providing OEM-quality gaskets for every critical seal...09341204- SKU:
- 09341204
- Availability:
- Ships Same Business Day
- Weight:
- 1.74 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MATERIAL:
- STEEL
- THICKNESS METRIC:
- 1.02 MM
- THICKNESS IMPERIAL:
- 0,040'
- BORE SIZE:
- 3,8125'
- BORE SIZE IMPERIAL:
- 3.8125'
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
MSRP: $202.60Now: $182.34Was: $202.60Qty in Cart: 0Quantity:Price:MSRP: $202.60Now: $182.34Was: $202.60Subtotal: -
On Sale
COMETIC Top End Gasket - Twin Cam C9147
COMETIC
MSRP: $150.10Now: $135.09Was: $150.10A top-end rebuild demands gaskets engineered to handle extreme combustion pressures and thermal cycling without compromise. The COMETIC C9147 kit eliminates the guesswork—every seal you need to...09341207- SKU:
- 09341207
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.875'
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- DISPLACEMENT:
- 103'
- DISPLACEMENT:
- 95'
- MATERIAL:
- STAINLESS STEEL
- BORE SIZE:
- 3,875'
- MATERIAL:
- RUBBER
MSRP: $150.10Now: $135.09Was: $150.10 -
On Sale
COMETIC Complete Gasket Kit - FXD C9148
COMETIC
MSRP: $209.95Now: $188.96Was: $209.95A complete gasket failure can cost you a race—or worse, sideline your engine indefinitely. The COMETIC Complete Gasket Kit for FXD ensures a reliable seal across every critical junction in your...09341208- SKU:
- 09341208
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- RIDING STYLE:
- STREET
- BORE SIZE:
- 3,750'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.750'
- MATERIAL:
- VITON
- TYPE:
- COMPLETE
- MATERIAL:
- STEEL
MSRP: $209.95Now: $188.96Was: $209.95 -
On Sale
COMETIC Complete Gasket Kit - FXD C9149
COMETIC
MSRP: $209.95Now: $188.96Was: $209.95A complete gasket kit eliminates the guesswork when rebuilding or refreshing your FXD engine—one order covers everything from head gaskets to primary covers, so you're not chasing down individual...09341209- SKU:
- 09341209
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- BORE SIZE:
- 3,875'
- PRODUCT NAME:
- GASKET KIT
- THICKNESS IMPERIAL:
- 0,030'
- MATERIAL:
- STEEL
- TYPE:
- COMPLETE
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.875'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
- THICKNESS METRIC:
- 0.76 MM
- UNITS:
- KIT
MSRP: $209.95Now: $188.96Was: $209.95 -
On Sale
COMETIC Primary Gasket Kit C9150
COMETIC
MSRP: $121.75Now: $109.58Was: $121.75A primary gasket kit is only as good as its ability to seal consistently under extreme heat and pressure—and that's where Cometic's AFM material excels. If you're running a high-performance engine,...09341210- SKU:
- 09341210
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- TYPE:
- PRIMARY
- UNITS:
- KIT
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
MSRP: $121.75Now: $109.58Was: $121.75Qty in Cart: 0Quantity:Price:MSRP: $121.75Now: $109.58Was: $121.75Subtotal: -
On Sale
COMETIC Cam Cover Gasket - Big Twin C9302F5
COMETIC
Now: $21.15Was: $23.50A leaking cam cover gasket compromises engine sealing and can lead to oil seepage onto critical engine components. The COMETIC Cam Cover Gasket for Big Twin engines delivers reliable, long-lasting...20111497- SKU:
- 20111497
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- TYPE:
- CAM COVER
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
- UNITS:
- 5 PACK
- THICKNESS METRIC:
- 1.52 MM
- THICKNESS:
- 1,52 MM (0,060')
Now: $21.15Was: $23.50 -
On Sale
COMETIC Cam Cover Gasket - Big Twin C9334F5
COMETIC
Now: $39.60Was: $44.00A leaking cam cover gasket compromises engine cleanliness and can lead to oil seepage onto critical components. The COMETIC Cam Cover Gasket C9334F5 delivers factory-spec sealing performance with...20111499- SKU:
- 20111499
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.52 MM
- THICKNESS:
- 1,52 MM (0,060')
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
- TYPE:
- CAM COVER
Now: $39.60Was: $44.00
