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Harley Engine

Harley Engine

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

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
  • ULTRACOOL Side Mount Oil Cooler Kit - Black - M8 SMS8-1G

    ULTRACOOL Side Mount Oil Cooler Kit - Black - M8 SMS8-1G

    ULTRACOOL

    $589.99
    Modern high-performance engines generate extreme heat under sustained load, and inadequate oil cooling directly compromises engine longevity and peak power output. The ULTRACOOL Side Mount Oil Cooler Kit delivers active thermal management with automatic...
    07130172
    SKU:
    07130172
    Availability:
    Ships Same Business Day
    Weight:
    6.75 LBS
    BASE COLOR:
    BLACK
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    GLOSS BLACK
    MOUNTING POSITION:
    DOWN TUBE
    MOUNTING POSITION:
    SIDE MOUNT
    PRODUCT NAME:
    OIL COOLER
    UNITS:
    KIT
    $589.99
    Qty in Cart: 0
    Quantity:
    Price:
    $589.99
    Subtotal:
  • COLONY Pushrod Covers - XL 2140-40

    COLONY Pushrod Covers - XL 2140-40

    COLONY

    $155.95
    Adjustable pushrods demand precision protection from debris, heat, and contamination—and these COLONY pushrod covers deliver exactly that. The XL 2140-40 kit keeps your valve train clean and operating at peak efficiency, whether you're tuning on the dyno...
    DS193829
    SKU:
    DS193829
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    UNITS:
    KIT
    BASE FINISH:
    CHROME
    COLOR/FINISH:
    CHROME
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    CONVERSION KIT
    TYPE:
    PUSHROD COVER
    $155.95
    Qty in Cart: 0
    Quantity:
    Price:
    $155.95
    Subtotal:
  • COLONY Oil Vent Fitting Chrome Big Twin 7148-3

    COLONY Oil Vent Fitting Chrome Big Twin 7148-3

    COLONY

    $17.95
    Oil line integrity is non-negotiable on high-performance Big Twin engines, where vibration and heat cycling can compromise factory fittings over time. The COLONY Oil Vent Fitting delivers OEM-equivalent construction with a chrome finish that resists...
    DS193814
    SKU:
    DS193814
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    COLOR/FINISH:
    CHROME
    MATERIAL:
    STEEL
    PRODUCT NAME:
    FITTING
    RIDING STYLE:
    STREET
    TYPE:
    OIL LINE
    BASE FINISH:
    CHROME
    UNITS:
    3 PACK
    $17.95
    Qty in Cart: 0
    Quantity:
    Price:
    $17.95
    Subtotal:
  • COLONY Acorn Front Belt Drive Pulley Nut 7816-1

    COLONY Acorn Front Belt Drive Pulley Nut 7816-1

    COLONY

    $14.95
    A secure front pulley connection is critical to reliable belt drive performance—any slippage or loosening can compromise your entire primary system. The COLONY Acorn Front Belt Drive Pulley Nut 7816-1 delivers the holding power and durability you need...
    DS193813
    SKU:
    DS193813
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    PRODUCT NAME:
    NUT
    UNITS:
    EACH
    BASE FINISH:
    CHROME
    COLOR/FINISH:
    CHROME
    RIDING STYLE:
    STREET
    TYPE:
    ACORN
    $14.95
    Qty in Cart: 0
    Quantity:
    Price:
    $14.95
    Subtotal:
  • COLONY Pushrod Kit - Big Twin 9213-4

    COLONY Pushrod Kit - Big Twin 9213-4

    COLONY

    $38.95
    Maintaining proper pushrod geometry is critical for valve train reliability and consistent performance in Big Twin engines. The COLONY Pushrod Kit 9213-4 delivers OEM-equivalent components that ensure precise fitment and eliminate the guesswork when...
    DS193768
    SKU:
    DS193768
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    BASE FINISH:
    CHROME
    TYPE:
    PUSHROD
    MOUNTING POSITION:
    INNER
    PRODUCT NAME:
    TUBE KIT
    COLOR/FINISH:
    CHROME
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    UNITS:
    SET OF 4
    $38.95
    Qty in Cart: 0
    Quantity:
    Price:
    $38.95
    Subtotal:
  • COLONY Pushrod Kit - Big Twin 9202-12

    COLONY Pushrod Kit - Big Twin 9202-12

    COLONY

    $65.95
    Pushrod tube assemblies are critical to proper valve train geometry and engine reliability on Big Twin motors—wear or damage compromises both performance and longevity. The COLONY Pushrod Kit 9202-12 delivers exact OEM-specification components, ensuring...
    DS193767
    SKU:
    DS193767
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    UNITS:
    SET OF 4
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    TUBE KIT
    BASE FINISH:
    CHROME
    COLOR/FINISH:
    CHROME
    MOUNTING POSITION:
    LOWER
    RIDING STYLE:
    STREET
    TYPE:
    PUSHROD
    $65.95
    Qty in Cart: 0
    Quantity:
    Price:
    $65.95
    Subtotal:
  • COLONY Pushrod Kit - Shovelhead/Evolution/Big Twin 7508-20

    COLONY Pushrod Kit - Shovelhead/Evolution/Big Twin 7508-20

    COLONY

    $55.95
    A leaking or worn pushrod tube assembly compromises engine seal integrity and invites oil seepage that degrades performance and cleanliness. The COLONY Pushrod Kit delivers exact OEM-specification components engineered for Shovelhead, Evolution, and Big...
    DS193766
    SKU:
    DS193766
    Availability:
    Ships Same Business Day
    Weight:
    0.44 LBS
    MOUNTING POSITION:
    UPPER
    TYPE:
    PUSHROD
    UNITS:
    SET OF 4
    PRODUCT NAME:
    TUBE KIT
    BASE FINISH:
    CHROME
    COLOR/FINISH:
    CHROME
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    $55.95
    Qty in Cart: 0
    Quantity:
    Price:
    $55.95
    Subtotal:
  • COLONY PUSHROD TUBE KIT 99-17 TC DS193758

    COLONY PUSHROD TUBE KIT 99-17 TC DS193758

    COLONY

    $85.95
    If you're upgrading to adjustable pushrods on your Twin Cam motor, you need proper short lower tubes that won't compromise valve train geometry or accessibility. The Colony kit eliminates guesswork with four precision-engineered tubes and clips that keep...
    DS193758
    SKU:
    DS193758
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    PRODUCT NAME:
    TUBE KIT
    RIDING STYLE:
    STREET
    UNITS:
    4 PACK
    MOUNTING POSITION:
    LOWER
    STYLE:
    QUICK INSTALL
    TYPE:
    PUSHROD
    $85.95
    Qty in Cart: 0
    Quantity:
    Price:
    $85.95
    Subtotal:
  • COLONY Pump Mounting Kit - Parkerized 9694-19

    COLONY Pump Mounting Kit - Parkerized 9694-19

    COLONY

    $30.95
    If you're rebuilding a pump assembly or replacing worn fasteners, sourcing the correct 1/4"-24 hard-to-find hex nuts can derail your project. This OEM-style COLONY kit eliminates the hunt by providing everything you need in one package—studs, nuts, and...
    09320068
    SKU:
    09320068
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    BASE FINISH:
    PARKERIZED
    PRODUCT NAME:
    MOUNTING HARDWARE
    RIDING STYLE:
    STREET
    BASE COLOR:
    BLACK
    COLOR/FINISH:
    PARKERIZED
    TYPE:
    OIL PUMP
    UNITS:
    KIT
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • COLONY Pump Mounting Kit - Cadmium 8741-19

    COLONY Pump Mounting Kit - Cadmium 8741-19

    COLONY

    $30.95
    Securing your pump mounting system requires hardware that won't strip, crack, or fail under sustained load—and sourcing OEM-spec fasteners individually wastes time and invites compatibility issues. The COLONY Pump Mounting Kit delivers a complete,...
    09320067
    SKU:
    09320067
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    COLOR/FINISH:
    CADMIUM
    UNITS:
    KIT
    BASE COLOR:
    SILVER
    TYPE:
    OIL PUMP
    PRODUCT NAME:
    MOUNTING HARDWARE
    RIDING STYLE:
    STREET
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • COLONY Pump Mounting Kit - Chrome 8740-19

    COLONY Pump Mounting Kit - Chrome 8740-19

    COLONY

    $36.95
    If you're rebuilding or upgrading your pump assembly, sourcing the correct fasteners shouldn't be a hassle—yet OEM 1/4"-24 hex nuts are notoriously difficult to find as individual components. The COLONY Pump Mounting Kit eliminates guesswork by providing...
    09320066
    SKU:
    09320066
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    TYPE:
    OIL PUMP
    BASE FINISH:
    CHROME
    UNITS:
    KIT
    COLOR/FINISH:
    CHROME
    PRODUCT NAME:
    MOUNTING HARDWARE
    RIDING STYLE:
    STREET
    $36.95
    Qty in Cart: 0
    Quantity:
    Price:
    $36.95
    Subtotal:
  • COLONY Pump Mount Nut - Chrome 8108-1

    COLONY Pump Mount Nut - Chrome 8108-1

    COLONY

    $6.95
    Pump mount fasteners take a beating in high-performance applications, and sourcing OEM-spec replacements shouldn't be a headache. The COLONY 8108-1 Chrome Pump Mount Nut gives you the exact 1/4"-24 specification you need—hard-to-find elsewhere—in a...
    09320063
    SKU:
    09320063
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    COLOR/FINISH:
    CHROME
    PRODUCT NAME:
    MOUNTING HARDWARE
    RIDING STYLE:
    STREET
    BASE FINISH:
    CHROME
    TYPE:
    OIL PUMP
    UNITS:
    EACH
    $6.95
    Qty in Cart: 0
    Quantity:
    Price:
    $6.95
    Subtotal:
  • COLONY Oil Pump Nut Kit - Cadmium 8111-12

    COLONY Oil Pump Nut Kit - Cadmium 8111-12

    COLONY

    $5.95
    Oil pump nuts are a wear item that often gets overlooked during engine rebuilds, but using OEM-specification fasteners is critical for maintaining proper oil pump mounting integrity and preventing leaks. This COLONY kit eliminates the frustration of...
    09320061
    SKU:
    09320061
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    RIDING STYLE:
    STREET
    TYPE:
    OIL PUMP
    UNITS:
    KIT
    BASE COLOR:
    SILVER
    COLOR/FINISH:
    CADMIUM
    PRODUCT NAME:
    NUT
    $5.95
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • ANDREWS Grind Cam 212440

    ANDREWS Grind Cam 212440

    ANDREWS

    $251.95
    If you're running a hydraulic lifter setup and hitting rpm limits that compromise performance, the ANDREWS Grind Cam 212440 eliminates that ceiling. This U.S.-made cam delivers reliable valve control at 6000+ rpm without valve float, giving you the...
    DS199299
    SKU:
    DS199299
    Availability:
    Ships Same Business Day
    Weight:
    2.02 LBS
    APPLICATION:
    EXHAUST
    EXHAUST CLOSE IMPERIAL:
    24°
    EXHAUST LIFT AT TDC IMPERIAL:
    SHOVEL: 0.156' PAN: 0.164'
    EXHAUST LIFT IMPERIAL:
    SHOVEL: 0.450' PAN: 0.470'
    GRIND:
    BH
    INTAKE OPEN IMPERIAL:
    24°
    PRODUCT NAME:
    CAM
    UNITS:
    EACH
    INTAKE CLOSE IMPERIAL:
    52°
    INTAKE DURATION IMPERIAL:
    256°
    INTAKE LIFT IMPERIAL:
    SHOVEL: 0.450' PAN: 0.470'
    APPLICATION:
    INTAKE
    EXHAUST DURATION IMPERIAL:
    256°
    EXHAUST OPEN IMPERIAL:
    52°
    INTAKE LIFT AT TDC IMPERIAL:
    SHOVEL: 0.156' PAN: 0.164'
    RIDING STYLE:
    STREET
    TYPE:
    GEAR
    $251.95
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    Subtotal:
  • ANDREWS J Grind Cam 212011

    ANDREWS J Grind Cam 212011

    ANDREWS

    $251.95
    If you're running a street or drag bike and want measurable mid-range and top-end power without sacrificing driveability, the Andrews J Grind Cam delivers where it counts. This U.S.-manufactured cam adds usable horsepower across the RPM range while...
    DS199301
    SKU:
    DS199301
    Availability:
    Ships Same Business Day
    Weight:
    1.81 LBS
    INTAKE CLOSE IMPERIAL:
    41°
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    APPLICATION:
    EXHAUST
    EXHAUST CLOSE IMPERIAL:
    21°
    EXHAUST LIFT AT TDC IMPERIAL:
    SHOVEL: 0.154' PAN: 0.162'
    EXHAUST OPEN IMPERIAL:
    41°
    INTAKE DURATION IMPERIAL:
    242°
    INTAKE LIFT AT TDC IMPERIAL:
    SHOVEL: 0.154' PAN: 0.162'
    INTAKE OPEN IMPERIAL:
    21°
    EXHAUST DURATION IMPERIAL:
    242°
    EXHAUST LIFT IMPERIAL:
    SHOVEL: 0.405' PAN: 0.425'
    GRIND:
    J
    INTAKE LIFT IMPERIAL:
    SHOVEL: 0.405' PAN: 0.425'
    PRODUCT NAME:
    CAM
    UNITS:
    EACH
    $251.95
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    Subtotal:
  • ANDREWS Grind Cam - Shovelhead 212020

    ANDREWS Grind Cam - Shovelhead 212020

    ANDREWS

    $251.95
    If you're running a Shovelhead and want to push RPM limits without compromising reliability, the ANDREWS Grind Cam 212020 is engineered to deliver. This hydraulic lifter cam eliminates valve float up to 6000+ RPM, giving you the headroom to build serious...
    DS199302
    SKU:
    DS199302
    Availability:
    Ships Same Business Day
    Weight:
    2.06 LBS
    EXHAUST LIFT AT TDC IMPERIAL:
    SHOVEL: 0.154' PAN: 0.162'
    EXHAUST LIFT IMPERIAL:
    SHOVEL: 0.405' PAN: 0.425'
    GRIND:
    J
    INTAKE CLOSE IMPERIAL:
    41°
    INTAKE DURATION IMPERIAL:
    242°
    PRODUCT NAME:
    CAM
    UNITS:
    EACH
    EXHAUST OPEN IMPERIAL:
    41°
    INTAKE LIFT AT TDC IMPERIAL:
    SHOVEL: 0.154' PAN: 0.162'
    INTAKE LIFT IMPERIAL:
    SHOVEL: 0.405' PAN: 0.425'
    APPLICATION:
    INTAKE
    EXHAUST DURATION IMPERIAL:
    242°
    RIDING STYLE:
    STREET
    TYPE:
    GEAR
    APPLICATION:
    EXHAUST
    EXHAUST CLOSE IMPERIAL:
    21°
    INTAKE OPEN IMPERIAL:
    21°
    $251.95
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    Subtotal:
  • ANDREWS Grind Cam - Shovelhead 212030

    ANDREWS Grind Cam - Shovelhead 212030

    ANDREWS

    $251.95
    If you're running a Shovelhead engine and want reliable valve actuation at high RPM without the risk of valve float, the ANDREWS Grind Cam 212030 delivers the performance you need. This hydraulic lifter cam is engineered to handle sustained 6000-plus RPM...
    DS199303
    SKU:
    DS199303
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    EXHAUST LIFT AT TDC IMPERIAL:
    SHOVEL: 0.154' PAN: 0.162'
    EXHAUST LIFT IMPERIAL:
    SHOVEL: 0.405' PAN: 0.425'
    GRIND:
    J
    INTAKE CLOSE IMPERIAL:
    41°
    INTAKE DURATION IMPERIAL:
    242°
    PRODUCT NAME:
    CAM
    APPLICATION:
    INTAKE
    EXHAUST OPEN IMPERIAL:
    41°
    INTAKE LIFT IMPERIAL:
    SHOVEL: 0.405' PAN: 0.425'
    TYPE:
    GEAR
    APPLICATION:
    EXHAUST
    EXHAUST CLOSE IMPERIAL:
    21°
    INTAKE LIFT AT TDC IMPERIAL:
    SHOVEL: 0.154' PAN: 0.162'
    INTAKE OPEN IMPERIAL:
    21°
    EXHAUST DURATION IMPERIAL:
    242°
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $251.95
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    Subtotal:
  • ANDREWS Grind Cam - Big Twin 212310

    ANDREWS Grind Cam - Big Twin 212310

    ANDREWS

    $251.95
    If you're running a Big Twin and want to push RPM limits without sacrificing reliability, the ANDREWS Grind Cam delivers the valve lift and timing geometry needed to breathe at 6000-plus RPM on stock springs. This hydraulic lifter cam eliminates valve...
    DS199317
    SKU:
    DS199317
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    APPLICATION:
    EXHAUST
    EXHAUST LIFT AT TDC IMPERIAL:
    SHOVEL: 0.142' PAN: 0.150'
    EXHAUST LIFT IMPERIAL:
    SHOVEL: 0.450' PAN: 0.470'
    EXHAUST OPEN IMPERIAL:
    43°
    INTAKE CLOSE IMPERIAL:
    50°
    INTAKE OPEN IMPERIAL:
    21°
    UNITS:
    EACH
    EXHAUST DURATION IMPERIAL:
    256°
    INTAKE LIFT IMPERIAL:
    SHOVEL: 0.450' PAN: 0.470'
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    EXHAUST CLOSE IMPERIAL:
    26°
    GRIND:
    AB
    INTAKE LIFT AT TDC IMPERIAL:
    SHOVEL: 0.156' PAN: 0.164'
    TYPE:
    GEAR
    INTAKE DURATION IMPERIAL:
    244°
    PRODUCT NAME:
    CAM
    $251.95
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    Subtotal:
  • ANDREWS EV3 Cam 291130

    ANDREWS EV3 Cam 291130

    ANDREWS

    $251.95
    The Andrews EV3 Cam 291130 delivers measurable mid-range power gains on stock hydraulic lifter engines without sacrificing streetability or idle quality. Built for light-duty Harley applications like the FXRS, this cam lets you maximize performance...
    DS199320
    SKU:
    DS199320
    Availability:
    Ships Same Business Day
    Weight:
    2.13 LBS
    APPLICATION:
    EXHAUST
    EXHAUST DURATION IMPERIAL:
    238°
    EXHAUST OPEN IMPERIAL:
    43°
    INTAKE CLOSE IMPERIAL:
    37°
    EXHAUST LOBE CENTERLINE IMPERIAL:
    104°
    INTAKE LIFT AT TDC IMPERIAL:
    0.197'
    RIDING STYLE:
    STREET
    INTAKE DURATION IMPERIAL:
    238°
    INTAKE OPEN IMPERIAL:
    21°
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    EXHAUST LIFT IMPERIAL:
    0.495'
    GRIND:
    EV3
    INTAKE LIFT IMPERIAL:
    0.495'
    INTAKE LOBE CENTERLINE IMPERIAL:
    98°
    TYPE:
    CHAIN
    EXHAUST CLOSE IMPERIAL:
    15°
    EXHAUST LIFT AT TDC IMPERIAL:
    0.159'
    PRODUCT NAME:
    CAM
    $251.95
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    Subtotal:
  • ANDREWS EZ-Install Pushrods 292245

    ANDREWS EZ-Install Pushrods 292245

    ANDREWS

    $305.95
    Cam changes and routine maintenance shouldn't require tearing apart your entire engine bay. The ANDREWS EZ-Install Pushrods eliminate the need to disassemble rocker boxes or drop your fuel tank, saving you hours of labor on every service interval...
    DS193851
    SKU:
    DS193851
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    MATERIAL:
    CHROMOLY
    PRODUCT NAME:
    PUSHROD
    RIDING STYLE:
    STREET
    MODEL:
    EZ-INSTALL
    UNITS:
    4 PACK
    $305.95
    Qty in Cart: 0
    Quantity:
    Price:
    $305.95
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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