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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
  • FEULING OIL PUMP CORP. OE+ Cam Plate - Gear 8030

    FEULING OIL PUMP CORP. OE+ Cam Plate - Gear 8030

    FEULING OIL PUMP CORP.

    $299.95
    If you're running an early Twin Cam® engine with newer-generation camshafts, you need a cam plate that bridges the gap between old and new—without compromises on oil pressure or reliability. The FEULING OE+ Cam Plate (Gear 8030) delivers exactly that: a...
    09250839
    SKU:
    09250839
    Availability:
    Ships Same Business Day
    Weight:
    1.95 LBS
    COLOR/FINISH:
    ALUMINUM
    PRODUCT NAME:
    CAM PLATE
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    TYPE:
    GEAR
    UNITS:
    EACH
    BASE COLOR:
    SILVER
    MODEL:
    OE+
    $299.95
    Qty in Cart: 0
    Quantity:
    Price:
    $299.95
    Subtotal:
  • FEULING OIL PUMP CORP. OE+ Cam Plate - Chain 8031

    FEULING OIL PUMP CORP. OE+ Cam Plate - Chain 8031

    FEULING OIL PUMP CORP.

    $309.95
    If you're running 99-06 Twin Cam® camshafts but want the reliability and tighter tolerances of modern hydraulic chain tensioning, this OE+ cam plate bridges that gap without sacrificing compatibility. FEULING's billet 6061 aluminum construction and...
    09250840
    SKU:
    09250840
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    BASE COLOR:
    SILVER
    MODEL:
    OE+
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    TYPE:
    CHAIN
    COLOR/FINISH:
    ALUMINUM
    PRODUCT NAME:
    CAM PLATE
    $309.95
    Qty in Cart: 0
    Quantity:
    Price:
    $309.95
    Subtotal:
  • FEULING OIL PUMP CORP. OE+ Cam Plate - Conversion 8032

    FEULING OIL PUMP CORP. OE+ Cam Plate - Conversion 8032

    FEULING OIL PUMP CORP.

    $309.95
    If you're running early Twin Cam® architecture but want the reliability and efficiency of modern hydraulic chain tensioning, this cam plate bridges that gap without compromising your existing camshaft investment. FEULING's OE+ design eliminates the...
    09250841
    SKU:
    09250841
    Availability:
    Ships Same Business Day
    Weight:
    1.90 LBS
    UNITS:
    EACH
    COLOR/FINISH:
    ALUMINUM
    MODEL:
    OE+
    PRODUCT NAME:
    CAM PLATE
    TYPE:
    HYDRAULIC
    BASE COLOR:
    SILVER
    TYPE:
    CHAIN
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    $309.95
    Qty in Cart: 0
    Quantity:
    Price:
    $309.95
    Subtotal:
  • FEULING OIL PUMP CORP. OE+ Cam Plate - Twin Cam 8033

    FEULING OIL PUMP CORP. OE+ Cam Plate - Twin Cam 8033

    FEULING OIL PUMP CORP.

    $309.95
    If you're running a modified Twin Cam engine with early-style camshafts but want the reliability and precision of modern hydraulic chain tensioning, this is your direct solution. The FEULING OE+ Cam Plate eliminates guesswork by providing a pre-set,...
    09250842
    SKU:
    09250842
    Availability:
    Ships Same Business Day
    Weight:
    1.85 LBS
    MODEL:
    OE+
    TYPE:
    CHAIN
    TYPE:
    GEAR
    UNITS:
    EACH
    BASE COLOR:
    SILVER
    COLOR/FINISH:
    ALUMINUM
    PRODUCT NAME:
    CAM PLATE
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    $309.95
    Qty in Cart: 0
    Quantity:
    Price:
    $309.95
    Subtotal:
  • FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 543 Series - Twin Cam 1022

    FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 543 Series - Twin Cam 1022

    FEULING OIL PUMP CORP.

    $399.95
    If you're running a stock to mid-displacement Twin Cam and want genuine power gains without sacrificing low-end torque or drivability, the Feuling 543 Series Gear Drive Reaper delivers. This cam profile is engineered for smooth, responsive power across a...
    09250727
    SKU:
    09250727
    Availability:
    Ships Same Business Day
    Weight:
    3.15 LBS
    RIDING STYLE:
    STREET
    APPLICATION:
    EXHAUST
    EXHAUST OPEN IMPERIAL:
    56°
    GRIND:
    543 SERIES
    INTAKE CLOSE IMPERIAL:
    43°
    INTAKE LIFT IMPERIAL:
    0.543'
    PRODUCT NAME:
    CAMSHAFT
    EXHAUST CLOSE IMPERIAL:
    12°
    EXHAUST LIFT AT TDC IMPERIAL:
    0.140'
    EXHAUST LIFT IMPERIAL:
    0.553'
    INTAKE DURATION IMPERIAL:
    238°
    INTAKE OPEN IMPERIAL:
    15°
    MODEL:
    REAPER
    UNITS:
    PAIR
    APPLICATION:
    INTAKE
    EXHAUST DURATION IMPERIAL:
    248°
    TYPE:
    GEAR
    $399.95
    Qty in Cart: 0
    Quantity:
    Price:
    $399.95
    Subtotal:
  • FEULING OIL PUMP CORP. HP+‚® Pushrods - Standard - Twin Cam 4072

    FEULING OIL PUMP CORP. HP+‚® Pushrods - Standard - Twin Cam 4072

    FEULING OIL PUMP CORP.

    $179.95
    Twin Cam valvetrain stability is critical—adjustable pushrods introduce harmonics that compromise lift consistency and accelerate hydraulic lifter wear. Feuling's one-piece 4130 chromoly HP+ Pushrods eliminate that instability by maintaining fixed...
    09280101
    SKU:
    09280101
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    UNITS:
    SET OF 4
    STYLE:
    FIXED LENGTH
    FEATURES:
    STOCK REPLACEMENT
    PRODUCT NAME:
    PUSHROD
    RIDING STYLE:
    STREET
    $179.95
    Qty in Cart: 0
    Quantity:
    Price:
    $179.95
    Subtotal:
  • FEULING OIL PUMP CORP. Inner Cam Bearings 2076

    FEULING OIL PUMP CORP. Inner Cam Bearings 2076

    FEULING OIL PUMP CORP.

    $32.95
    High-performance engines demand bearings that can handle sustained elevated loads without compromise. The Feuling Oil Pump Corp. Inner Cam Bearings (2076) are engineered with full-complement bearing technology to support aggressive cam profiles and...
    09240239
    SKU:
    09240239
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    PRODUCT NAME:
    BEARING
    UNITS:
    PAIR
    APPLICATION:
    CAMSHAFT
    TYPE:
    NEEDLE
    RIDING STYLE:
    STREET
    $32.95
    Qty in Cart: 0
    Quantity:
    Price:
    $32.95
    Subtotal:
  • FEULING OIL PUMP CORP. Chain Drive Reaper Cam - 543 Series - Twin Cam 1020

    FEULING OIL PUMP CORP. Chain Drive Reaper Cam - 543 Series - Twin Cam 1020

    FEULING OIL PUMP CORP.

    $399.95
    If you're running a Twin Cam engine and want measurable gains in mid-range power without sacrificing the low-end torque that makes your bike rideable, the Feuling 543 Series Chain Drive Reaper Cam delivers exactly that. This cam profile strikes the rare...
    09250673
    SKU:
    09250673
    Availability:
    Ships Same Business Day
    Weight:
    3.25 LBS
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    EXHAUST CLOSE IMPERIAL:
    12°
    EXHAUST DURATION IMPERIAL:
    248°
    INTAKE DURATION IMPERIAL:
    238°
    INTAKE OPEN IMPERIAL:
    15°
    TYPE:
    CHAIN
    EXHAUST OPEN IMPERIAL:
    56°
    GRIND:
    543 SERIES
    INTAKE CLOSE IMPERIAL:
    43°
    PRODUCT NAME:
    CAMSHAFT
    EXHAUST LIFT AT TDC IMPERIAL:
    0.140'
    EXHAUST LIFT IMPERIAL:
    0.553'
    MODEL:
    REAPER
    UNITS:
    PAIR
    INTAKE LIFT IMPERIAL:
    0.543'
    RIDING STYLE:
    STREET
    $399.95
    Qty in Cart: 0
    Quantity:
    Price:
    $399.95
    Subtotal:
  • FEULING OIL PUMP CORP. Adjustable Race Pushrods - Twin Cam 4070 FEULING OIL PUMP CORP. Adjustable Race Pushrods - Twin Cam 4070

    FEULING OIL PUMP CORP. Adjustable Race Pushrods - Twin Cam 4070

    FEULING OIL PUMP CORP.

    $229.95
    If you're pushing your Twin Cam engine beyond stock parameters, factory pushrods become your weakest link. FEULING's Adjustable Race Pushrods eliminate valve-train flex and instability that kills horsepower and limits RPM ceiling, especially when running...
    09280010
    SKU:
    09280010
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    MATERIAL:
    CHROMOLY STEEL
    RIDING STYLE:
    STREET
    STYLE:
    ADJUSTABLE
    UNITS:
    SET OF 4
    WALL THICKNESS IMPERIAL:
    0.120'
    MODEL:
    RACE SERIES®
    WALL THICKNESS:
    0,120'
    DIAMETER IMPERIAL:
    7/16'
    PRODUCT NAME:
    PUSHROD SET
    $229.95
    Qty in Cart: 0
    Quantity:
    Price:
    $229.95
    Subtotal:
  • FRAM Oil Filter PH6022

    FRAM Oil Filter PH6022

    FRAM

    $19.09
    A quality oil filter is one of the most cost-effective ways to protect your engine from premature wear. The FRAM PH6022 uses a proprietary fiber-blend media to capture 95% of contaminants while maintaining the flow rate your engine demands. Whether...
    PH6022
    SKU:
    PH6022
    Availability:
    Ships Same Business Day
    Weight:
    0.56 LBS
    COLOR/FINISH:
    BLACK
    FILTER MEDIA MATERIAL:
    CELLULOSE AND GLASS BLEND
    UNITS:
    EACH
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    OIL FILTER
    RIDING STYLE:
    STREET
    TYPE:
    SPIN-ON
    $19.09
    Qty in Cart: 0
    Quantity:
    Price:
    $19.09
    Subtotal:
  • On Sale
    GOODRIDGE Straight Oil Line Fitting - Black 1136-0106BK

    GOODRIDGE Straight Oil Line Fitting - Black 1136-0106BK

    GOODRIDGE

    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    A properly routed and sealed oil line is critical to engine longevity and reliable performance under racing conditions. The GOODRIDGE Straight Oil Line Fitting delivers corrosion-resistant construction and precision engineering—ensuring your oil system...
    07110203
    SKU:
    07110203
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    BASE COLOR:
    BLACK
    BASE FINISH:
    ANODIZED
    PRODUCT NAME:
    FITTING
    RIDING STYLE:
    STREET
    FITTING ANGLE:
    STRAIGHT
    FITTING CONNECTOR TYPE:
    -6 HOSE FITTING
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    TYPE:
    OIL LINE
    UNITS:
    EACH
    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    Subtotal:
  • On Sale
    GOODRIDGE Straight Oil Line Fitting - Black - 1/4" NPT AN816-06DBK

    GOODRIDGE Straight Oil Line Fitting - Black - 1/4" NPT AN816-06DBK

    GOODRIDGE

    MSRP: $5.95
    Now: $4.46
    Was: $5.95
    Reliable oil line routing is foundational to engine longevity and performance—especially in forced induction or high-heat applications where standard fittings fail prematurely. GOODRIDGE straight fittings deliver corrosion resistance and leak-free...
    07110204
    SKU:
    07110204
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BASE FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    BASE COLOR:
    BLACK
    FITTING CONNECTOR TYPE:
    1/4' NPT MALE
    FITTING CONNECTOR TYPE:
    -6 AN MALE
    UNITS:
    EACH
    FITTING ANGLE:
    STRAIGHT
    PRODUCT NAME:
    FITTING
    RIDING STYLE:
    STREET
    TYPE:
    OIL LINE
    MSRP: $5.95
    Now: $4.46
    Was: $5.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $5.95
    Now: $4.46
    Was: $5.95
    Subtotal:
  • On Sale
    GOODRIDGE -6 Oil Line - Black - 12' 210-06-12 GOODRIDGE -6 Oil Line - Black - 12' 210-06-12

    GOODRIDGE -6 Oil Line - Black - 12' 210-06-12

    GOODRIDGE

    MSRP: $132.69
    Now: $119.42
    Was: $132.69
    Reliable oil line systems are critical to engine longevity, especially in high-performance applications where temperature swings and pressure spikes are constant. The GOODRIDGE -6 Oil Line delivers superior protection with a PTFE liner that resists...
    07110206
    SKU:
    07110206
    Availability:
    Ships Same Business Day
    Weight:
    1.15 LBS
    RIDING STYLE:
    STREET
    MATERIAL:
    RUBBER
    COLOR/FINISH:
    BLACK
    HOSE SIZE:
    -6
    LENGTH METRIC:
    366 CM
    TYPE:
    OIL LINE
    BASE COLOR:
    BLACK
    LENGTH IMPERIAL:
    12'
    PRODUCT NAME:
    HOSE
    STYLE:
    BRAIDED
    UNITS:
    EACH
    MSRP: $132.69
    Now: $119.42
    Was: $132.69
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $132.69
    Now: $119.42
    Was: $132.69
    Subtotal:
  • On Sale
    GOODRIDGE -6 Oil Line - Black - 6' 210-06-6 GOODRIDGE -6 Oil Line - Black - 6' 210-06-6

    GOODRIDGE -6 Oil Line - Black - 6' 210-06-6

    GOODRIDGE

    MSRP: $67.95
    Now: $61.16
    Was: $67.95
    High-quality oil lines are critical to maintaining system pressure, preventing leaks, and ensuring reliable performance under extreme conditions. The GOODRIDGE -6 Oil Line combines a PTFE liner with precision fittings to deliver superior durability...
    07110208
    SKU:
    07110208
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    COLOR/FINISH:
    BLACK
    UNITS:
    EACH
    BASE COLOR:
    BLACK
    MATERIAL:
    RUBBER
    PRODUCT NAME:
    HOSE
    STYLE:
    BRAIDED
    HOSE SIZE:
    -6
    LENGTH IMPERIAL:
    6'
    LENGTH METRIC:
    183 CM
    RIDING STYLE:
    STREET
    TYPE:
    OIL LINE
    MSRP: $67.95
    Now: $61.16
    Was: $67.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $67.95
    Now: $61.16
    Was: $67.95
    Subtotal:
  • HORSEPOWER, INC Oil Filter Bracket - Big Twin HPI-OC-1

    HORSEPOWER, INC Oil Filter Bracket - Big Twin HPI-OC-1

    HORSEPOWER, INC

    $169.95
    Oil pressure drop and elevated temperatures are performance killers that compromise engine reliability and efficiency. The HORSEPOWER, INC Oil Filter Bracket eliminates these issues with optimized oil passages that flow nearly 30% more efficiently than...
    07120269
    SKU:
    07120269
    Availability:
    Ships Same Business Day
    Weight:
    1.11 LBS
    BASE FINISH:
    POLISHED
    MATERIAL:
    BILLET ALUMINUM
    PRODUCT NAME:
    MOUNT
    TYPE:
    OIL FILTER
    COLOR/FINISH:
    POLISHED
    UNITS:
    EACH
    RIDING STYLE:
    STREET
    Qty in Cart: 0
    Quantity:
    Price:
    $169.95
    Subtotal:
  • JAGG OIL COOLERS Hyperflow Service Kit SKJ77

    JAGG OIL COOLERS Hyperflow Service Kit SKJ77

    JAGG OIL COOLERS

    $10.95
    Maintaining proper oil cooler sealing is critical to preventing leaks and ensuring consistent engine temperatures under sustained performance conditions. The JAGG OIL COOLERS Hyperflow Service Kit SKJ77 provides genuine replacement quad-seal O-rings that...
    07120556
    SKU:
    07120556
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MODEL:
    HYPERFLOW
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    OIL FILTER
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $10.95
    Subtotal:
  • JAMES GASKET Oil Pump Key - Big Twin 26340-36

    JAMES GASKET Oil Pump Key - Big Twin 26340-36

    JAMES GASKET

    $22.20
    The oil pump key is a critical component that synchronizes your engine's oil pump timing with crankshaft rotation—a failure here means inadequate lubrication and potential catastrophic engine damage. JAMES GASKET's Big Twin oil pump key is...
    DS194349
    SKU:
    DS194349
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    STREET
    TYPE:
    OIL PUMP
    UNITS:
    10 PACK
    PRODUCT NAME:
    KEY
    Qty in Cart: 0
    Quantity:
    Price:
    $22.20
    Subtotal:
  • JAMES GASKET Transmission Oil Pan 26077-93

    JAMES GASKET Transmission Oil Pan 26077-93

    JAMES GASKET

    $33.90
    A quality transmission oil pan is critical to maintaining proper fluid temperature and preventing leaks that can compromise your drivetrain's performance. The JAMES GASKET 26077-93 is precision-engineered to OEM specifications, ensuring a secure seal and...
    09343431
    SKU:
    09343431
    Availability:
    Ships Same Business Day
    Weight:
    0.26 LBS
    PRODUCT NAME:
    GASKET
    TYPE:
    TRANSMISSION
    UNITS:
    5 PACK
    RIDING STYLE:
    STREET
    TYPE:
    OIL PAN
    $33.90
    Qty in Cart: 0
    Quantity:
    Price:
    $33.90
    Subtotal:
  • K & N Oil Filter - Chrome - Big Twin KN-172C

    K & N Oil Filter - Chrome - Big Twin KN-172C

    K & N

    $20.99
    Synthetic racing oils demand superior filtration to maintain engine cleanliness under extreme conditions, and this K&N filter is engineered specifically for that purpose. The uniform pleated synthetic media delivers high-flow rates without compromising...
    KN172C
    SKU:
    KN172C
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BASE COLOR:
    SILVER
    UNITS:
    EACH
    COLOR/FINISH:
    CHROME
    FILTER MEDIA MATERIAL:
    SYNTHETIC
    LENGTH METRIC:
    79 MM
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    OIL FILTER
    STYLE:
    STANDARD
    TYPE:
    SPIN-ON
    BASE FINISH:
    CHROME
    FEATURES:
    INCLUDES NUT
    $20.99
    Qty in Cart: 0
    Quantity:
    Price:
    $20.99
    Subtotal:
  • K & N Oil Filter - Black - V-Rod KN-174B

    K & N Oil Filter - Black - V-Rod KN-174B

    K & N

    $17.99
    Synthetic racing oils demand a filter engineered to match their performance demands—and the K&N KN-174B delivers exactly that. Built with uniform pleated synthetic media, this filter handles the high-flow rates of modern racing lubricants while...
    07120448
    SKU:
    07120448
    Availability:
    Ships Same Business Day
    Weight:
    0.81 LBS
    BASE FINISH:
    COATED
    MODEL:
    WRENCH-OFF
    RIDING STYLE:
    STREET
    STYLE:
    PREMIUM
    BASE COLOR:
    BLACK
    LENGTH METRIC:
    98 MM
    UNITS:
    EACH
    FEATURES:
    INCLUDES NUT
    FILTER MEDIA MATERIAL:
    SYNTHETIC
    PRODUCT NAME:
    OIL FILTER
    COLOR/FINISH:
    BLACK
    TYPE:
    SPIN-ON
    $17.99
    Qty in Cart: 0
    Quantity:
    Price:
    $17.99
    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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