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
COMETIC Primary Gasket Kit C9211
COMETIC
MSRP: $56.65Now: $50.99Was: $56.65A primary gasket failure can sideline your engine and derail race day. Cometic's C9211 kit eliminates guesswork with purpose-built AFM gaskets engineered for high-heat, high-load environments where...09344807- SKU:
- 09344807
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
MSRP: $56.65Now: $50.99Was: $56.65 -
On Sale
COMETIC Oil Pan Gasket - Twin Cam C9647F1
COMETIC
MSRP: $13.95Now: $12.56Was: $13.95A quality oil pan gasket is critical to preventing leaks that can compromise engine lubrication and lead to catastrophic damage. The COMETIC C9647F1 uses a proven aluminum Foamette design that...09344811- SKU:
- 09344811
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- UNITS:
- EACH
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
- TYPE:
- OIL PAN
MSRP: $13.95Now: $12.56Was: $13.95 -
On Sale
COMETIC Intake Manifold O-Ring Set C9453-KIT
COMETIC
MSRP: $5.95Now: $5.36Was: $5.95Intake manifold leaks compromise combustion efficiency and can lead to vacuum leaks that throw off your fuel mixture and ignition timing. COMETIC's O-ring set eliminates the guesswork by providing...09344705- SKU:
- 09344705
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- INTAKE MANIFOLD
- APPLICATION:
- CYLINDER
- RIDING STYLE:
- STREET
- UNITS:
- SET
- PRODUCT NAME:
- O-RING
MSRP: $5.95Now: $5.36Was: $5.95Qty in Cart: 0Quantity:Price:MSRP: $5.95Now: $5.36Was: $5.95Subtotal: -
On Sale
COMETIC Manifold Gaskets C9608-2
COMETIC
MSRP: $6.95Now: $6.26Was: $6.95A quality manifold gasket is critical to preventing exhaust leaks that rob power and create unwanted noise. COMETIC's precision-engineered gasket ensures a reliable seal under high heat and pressure...09344717- SKU:
- 09344717
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CYLINDER HEAD
- APPLICATION:
- INTAKE MANIFOLD
- MATERIAL:
- NITRILE RUBBER
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
MSRP: $6.95Now: $6.26Was: $6.95Qty in Cart: 0Quantity:Price:MSRP: $6.95Now: $6.26Was: $6.95Subtotal: -
On Sale
COMETIC Point Cover Gasket - Big Twin C9306F
COMETIC
Now: $8.01Was: $8.90A worn or deteriorating derby cover gasket compromises the seal on your Big Twin engine, leading to oil seepage, contamination, and potential engine damage over time. Cometic's point cover gasket...09341359- SKU:
- 09341359
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- POINT COVER
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- UNITS:
- 5 PACK
Now: $8.01Was: $8.90Qty in Cart: 0Quantity:Price:Now: $8.01Was: $8.90Subtotal: -
On Sale
COMETIC Head/Intake Seal - Big Twin C9299
COMETIC
Now: $9.54Was: $10.60A compromised head or intake seal will cost you power, reliability, and money. The COMETIC C9299 Head/Intake Seal eliminates guesswork with precision-engineered construction that maintains consistent...09341360- SKU:
- 09341360
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- THICKNESS:
- 0,79 MM (0,031')
- UNITS:
- 10 PACK
- THICKNESS IMPERIAL:
- 0,031'
- MATERIAL:
- VITON
- PRODUCT NAME:
- GASKET
- TYPE:
- INTAKE MANIFOLD
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
Now: $9.54Was: $10.60 -
On Sale
COMETIC Oil Pump Cover Paper Gasket C9382
COMETIC
Now: $5.76Was: $6.40A failing oil pump cover gasket compromises your engine's oil seal integrity, risking pressure loss and potential damage to critical internal components. The COMETIC C9382 is a precision paper gasket...09341363- SKU:
- 09341363
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- MATERIAL:
- VULCANIZED FIBER
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.25 MM
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
Now: $5.76Was: $6.40 -
On Sale
COMETIC Starter Bolt O-Ring - Big Twin C9436
COMETIC
Now: $4.77Was: $5.30Starter bolt seal failures are a common source of oil leaks on Big Twin engines, often going unnoticed until oil pooling becomes a real problem. This COMETIC O-ring provides a precision seal at the...09341367- SKU:
- 09341367
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- STARTER
- PRODUCT NAME:
- O-RING
- MATERIAL:
- NITRILE RUBBER
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
Now: $4.77Was: $5.30 -
On Sale
COMETIC Starter Cover Gasket C9507F
COMETIC
Now: $4.77Was: $5.30A leaking starter cover gasket compromises engine sealing and can lead to oil weeping that attracts debris and contaminates critical engine components. The COMETIC C9507F delivers OEM-equivalent...09341368- SKU:
- 09341368
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- UNITS:
- 10 PACK
- TYPE:
- STARTER HOUSING
Now: $4.77Was: $5.30 -
On Sale
COMETIC Starter Cover Gasket C9508F
COMETIC
Now: $9.99Was: $11.10A leaking starter cover gasket compromises engine sealing and invites oil contamination into critical starter components. The COMETIC C9508F delivers factory-grade reliability with precision...09341369- SKU:
- 09341369
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- STARTER HOUSING
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
Now: $9.99Was: $11.10 -
On Sale
COMETIC Rocker Gasket Kit - M8 C10226
COMETIC
MSRP: $77.65Now: $69.89Was: $77.65Rocker box gasket failure compromises engine sealing and can lead to oil leaks, contamination, and costly engine damage. The COMETIC Rocker Gasket Kit M8 C10226 delivers a complete seal solution with...09346315- SKU:
- 09346315
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- TYPE:
- ROCKER COVER
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
MSRP: $77.65Now: $69.89Was: $77.65 -
On Sale
COMETIC Head Gasket - .030" - Twin Cam C9725
COMETIC
MSRP: $61.90Now: $55.71Was: $61.90A quality head gasket is the foundation of reliable cylinder sealing—especially on high-performance Twin Cam engines where boost and sustained RPMs demand precision. The COMETIC C9725 uses proven MLS...09340002- SKU:
- 09340002
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,030'
- BORE SIZE:
- 4,000'
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
- THICKNESS:
- 0,76 MM (0,030')
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
MSRP: $61.90Now: $55.71Was: $61.90 -
On Sale
ANDREWS Y Grind Cams - XL 214080
ANDREWS
MSRP: $633.95Now: $570.56Was: $633.95If you're running a big-block Harley and want serious mid-range and top-end power without cracking open the head, the Andrews Y Grind Cams are your answer. This is the largest four-cam set available...DS199356- SKU:
- DS199356
- Availability:
- Ships Same Business Day
- Weight:
- 4.95 LBS
- INTAKE LOBE CENTERLINE IMPERIAL:
- 96°
- INTAKE OPEN IMPERIAL:
- 35°
- PRODUCT NAME:
- CAM KIT
- UNITS:
- SET
- APPLICATION:
- INTAKE
- INTAKE LIFT AT TDC IMPERIAL:
- 0.206'
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 29°
- EXHAUST DURATION IMPERIAL:
- 262°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.182'
- EXHAUST LIFT IMPERIAL:
- 0.425'
- INTAKE CLOSE IMPERIAL:
- 47°
- INTAKE LIFT IMPERIAL:
- 0.425'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 102°
- EXHAUST OPEN IMPERIAL:
- 53°
- GRIND:
- Y
- INTAKE DURATION IMPERIAL:
- 262°
- RIDING STYLE:
- STREET
MSRP: $633.95Now: $570.56Was: $633.95Qty in Cart: 0Quantity:Price:MSRP: $633.95Now: $570.56Was: $633.95Subtotal: -
COMP CAMS Race Tappet - Evolution 7391-1
COMP CAMS
$104.95Precision valve control is non-negotiable in high-performance racing engines, and the COMP CAMS Race Tappet Evolution 7391-1 delivers the reliability required when every millisecond counts. Built...09290078- SKU:
- 09290078
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- TAPPET
- COLOR/FINISH:
- BLACK OXIDE
$104.95Qty in Cart: 0Quantity:Price:$104.95Subtotal: -
COMP CAMS Race Tappets - Evolution 7391-4
COMP CAMS
$412.95Precision valve timing control separates competitive engines from the rest, and these COMP Cams race tappets deliver the repeatability that wins races. Built for high-RPM stability and consistent...09290079- SKU:
- 09290079
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- UNITS:
- SET OF 4
- COLOR/FINISH:
- BLACK OXIDE
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- TAPPET
$412.95Qty in Cart: 0Quantity:Price:$412.95Subtotal: -
COMP CAMS Thumper Cams TC-4102
COMP CAMS
$376.95If you're running extended racing sessions or high-mileage street applications, you need a cam that delivers serious power without sacrificing valve train longevity. The COMP CAMS Thumper TC-4102...09251095- SKU:
- 09251095
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- INTAKE CLOSE IMPERIAL:
- 39°
- EXHAUST LIFT IMPERIAL:
- 0.569'
- EXHAUST OPEN IMPERIAL:
- 57°
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 20°
- EXHAUST DURATION IMPERIAL:
- 257°
- INTAKE DURATION IMPERIAL:
- 243°
- INTAKE LIFT IMPERIAL:
- 0.569'
- INTAKE OPEN IMPERIAL:
- 24°
- TYPE:
- CHAIN
$376.95Qty in Cart: 0Quantity:Price:$376.95Subtotal: -
COMP CAMS Xtreme Energy¢â€žÂ¢ Cam EVL-5005
COMP CAMS
$317.95If you're running an Evolution engine and want to unlock measurable gains in throttle response and mid-range power without sacrificing high-RPM performance, the COMP CAMS Xtreme Energy cam is...09250038- SKU:
- 09250038
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- APPLICATION:
- INTAKE
- INTAKE CLOSE IMPERIAL:
- 33°
- PRODUCT NAME:
- CAM
- TYPE:
- GEAR
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- GRIND:
- EVL-5005
- INTAKE DURATION IMPERIAL:
- 236°
- EXHAUST LIFT IMPERIAL:
- 0.569'
- INTAKE LIFT IMPERIAL:
- 0.569'
- MODEL:
- XTREME ENERGY
- EXHAUST CLOSE IMPERIAL:
- 14°
- EXHAUST DURATION IMPERIAL:
- 236°
- EXHAUST OPEN IMPERIAL:
- 42°
- INTAKE OPEN IMPERIAL:
- 18°
- RIDING STYLE:
- STREET
$317.95Qty in Cart: 0Quantity:Price:$317.95Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Pinion Bushing A-25582-93
EASTERN MOTORCYCLE PARTS
MSRP: $39.95Now: $36.35Was: $39.95A properly functioning pinion bushing is critical to maintaining smooth power delivery and reducing drivetrain noise in your motorcycle. This EASTERN MOTORCYCLE PARTS bushing is machined from solid...09240275- SKU:
- 09240275
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- PINION SHAFT
- MATERIAL:
- BRASS
- SIZE:
- STANDARD
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- SIZE IMPERIAL:
- STANDARD
MSRP: $39.95Now: $36.35Was: $39.95 -
On Sale
COMETIC Head Gasket - Standard - VROD - .030" C9896
COMETIC
MSRP: $129.10Now: $116.19Was: $129.10A proper head gasket is fundamental to engine reliability—it's your first line of defense against combustion chamber leakage, coolant seepage, and compression loss. The COMETIC C9896 delivers proven...09340796- SKU:
- 09340796
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- MATERIAL:
- LAYERED STEEL
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
- BORE SIZE:
- 4,017'
- MATERIAL:
- VITON
- THICKNESS:
- 0,76 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
- PRODUCT NAME:
- GASKET
- BORE SIZE IMPERIAL:
- 4.017'
- RIDING STYLE:
- STREET
MSRP: $129.10Now: $116.19Was: $129.10 -
On Sale
COMETIC Motor Gasket Kit - 1550 C9892
COMETIC
MSRP: $169.00Now: $152.10Was: $169.00A complete gasket failure can end your race day before it starts. The COMETIC Motor Gasket Kit C9892 delivers OEM-grade sealing across your entire engine, using purpose-built materials that handle...09340808- SKU:
- 09340808
- Availability:
- Ships Same Business Day
- Weight:
- 0.98 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,040'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- THICKNESS METRIC:
- 1.02 MM
- BORE SIZE:
- 3,875'
- MATERIAL:
- STEEL
- TYPE:
- MOTOR
- UNITS:
- KIT
MSRP: $169.00Now: $152.10Was: $169.00Qty in Cart: 0Quantity:Price:MSRP: $169.00Now: $152.10Was: $169.00Subtotal:
