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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. Lifters - Race Series - Evolution 4062

    FEULING OIL PUMP CORP. Lifters - Race Series - Evolution 4062

    FEULING OIL PUMP CORP.

    $319.95
    Full-travel hydraulic lifters made from machined steel, Exceed the needs of large-lift camshafts and higher spring pressures with a slower bleed-down rate, Maintain proper and critical oil flow to valves, springs, rockers, shafts and valve guides,...
    09290022
    SKU:
    09290022
    Availability:
    Ships Same Business Day
    Weight:
    1.56 LBS
    RIDING STYLE:
    STREET
    SIZE:
    STANDARD
    TYPE:
    HYDRAULIC
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    MODEL:
    RACE SERIES®
    SIZE IMPERIAL:
    STANDARD
    UNITS:
    SET OF 4
    MATERIAL:
    STEEL
    PRODUCT NAME:
    LIFTER
    STYLE:
    FULL-TRAVEL
    $319.95
    Qty in Cart: 0
    Quantity:
    Price:
    $319.95
    Subtotal:
  • FEULING OIL PUMP CORP. Race Series‚® Solid Lifters - Twin Cam 4055

    FEULING OIL PUMP CORP. Race Series‚® Solid Lifters - Twin Cam 4055

    FEULING OIL PUMP CORP.

    $299.95
    Designed for engines with radical valve spring pressures and large lift camshafts; maintain proper and critical oil flow to top end with metered oiling, Optimize valvetrain stability, increase engine rpm, horsepower and torque output, Decrease valve...
    09290024
    SKU:
    09290024
    Availability:
    Ships Same Business Day
    Weight:
    1.15 LBS
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    DIAMETER IMPERIAL:
    0.8425'
    MATERIAL:
    STEEL
    MODEL:
    RACE SERIES®
    PRODUCT NAME:
    LIFTER
    UNITS:
    SET OF 4
    STYLE:
    SOLID
    $299.95
    Qty in Cart: 0
    Quantity:
    Price:
    $299.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Seals - M8 1080

    FEULING OIL PUMP CORP. Valve Seals - M8 1080

    FEULING OIL PUMP CORP.

    $19.95
    High-quality Viton® valve seals, Designed to handle high engine temperatures with a built-in spring-loaded wiper to clean excess oil from valve stem with minimal friction, Include four seals and seal installer tool, Made in the U.S.A.
    09262925
    SKU:
    09262925
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    APPLICATION:
    INTAKE
    RIDING STYLE:
    STREET
    UNITS:
    8 PACK
    APPLICATION:
    EXHAUST
    MATERIAL:
    VITON
    PRODUCT NAME:
    SEAL
    TYPE:
    VALVE
    $19.95
    Qty in Cart: 0
    Quantity:
    Price:
    $19.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Seals 1079

    FEULING OIL PUMP CORP. Valve Seals 1079

    FEULING OIL PUMP CORP.

    $18.95
    Valve seal degradation is a silent killer of engine performance—worn seals allow oil to seep past valve stems, starving your top end of proper lubrication and increasing blowby that robs power. The Feuling Oil Pump Corp. Valve Seals 1079 are engineered...
    09262803
    SKU:
    09262803
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    MATERIAL:
    VITON
    PRODUCT NAME:
    SEAL
    RIDING STYLE:
    STREET
    UNITS:
    8 PACK
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    TYPE:
    VALVE
    $18.95
    Qty in Cart: 0
    Quantity:
    Price:
    $18.95
    Subtotal:
  • FEULING OIL PUMP CORP. Crankshaft Bearing Race Kit - Twin Cam 5200

    FEULING OIL PUMP CORP. Crankshaft Bearing Race Kit - Twin Cam 5200

    FEULING OIL PUMP CORP.

    $89.95
    Kit includes right and left side crankshaft races with the left side thrust washers, These Feuling press on races have a precision ground outer diameter finish and are designed to be true to size producing the correct OD after proper press on installation
    09210786
    SKU:
    09210786
    Availability:
    Ships Same Business Day
    Weight:
    0.81 LBS
    FEATURES:
    TWIN CAM A ENGINES
    PRODUCT NAME:
    CRANKSHAFT BEARING RACE KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    $89.95
    Qty in Cart: 0
    Quantity:
    Price:
    $89.95
    Subtotal:
  • FEULING OIL PUMP CORP. Rebuild Kit 7001

    FEULING OIL PUMP CORP. Rebuild Kit 7001

    FEULING OIL PUMP CORP.

    $24.33
    Keep your high-performance oil pump operating at peak efficiency with this comprehensive rebuild kit from Feuling Oil Pump Corp. Rather than sourcing components piecemeal, this kit consolidates all the wear items and sealing surfaces you need to restore...
    09320019
    SKU:
    09320019
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    RIDING STYLE:
    STREET
    TYPE:
    OIL PUMP
    UNITS:
    KIT
    PRODUCT NAME:
    REBUILD KIT
    $24.33
    Qty in Cart: 0
    Quantity:
    Price:
    $24.33
    Subtotal:
  • FEULING OIL PUMP CORP. Race Oil Pump - Twin Cam 7062

    FEULING OIL PUMP CORP. Race Oil Pump - Twin Cam 7062

    FEULING OIL PUMP CORP.

    $529.95
    Made of 7075 billet aluminum with military spec hard anodizing; blueprinted and designed for the racer, The 7075 alloy is 50% harder and stronger than 6061 aluminum and holds tighter tolerance under temperature, Gain more pressure volume, oil pressure...
    09320026
    SKU:
    09320026
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    COLOR/FINISH:
    RED
    MODEL:
    RACE SERIES®
    MATERIAL:
    7075 BILLET ALUMINUM
    BASE COLOR:
    RED
    TYPE:
    OIL PUMP
    PRODUCT NAME:
    PUMP
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $529.95
    Qty in Cart: 0
    Quantity:
    Price:
    $529.95
    Subtotal:
  • FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7070

    FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7070

    FEULING OIL PUMP CORP.

    $869.15
    A properly functioning oil system is the foundation of engine longevity and performance. The Feuling Oil Pump Corp. Performance Oil System addresses common Twin Cam oiling failures—wet sumping, inadequate pressure, and thermal stress—by increasing oil...
    09320027
    SKU:
    09320027
    Availability:
    Ships Same Business Day
    Weight:
    5.41 LBS
    PRODUCT NAME:
    OIL SYSTEM
    STYLE:
    GEAR DRIVE
    TYPE:
    CAM PLATE
    COLOR/FINISH:
    ALUMINUM
    COLOR/FINISH:
    RED
    FLOW RATE:
    STANDARD
    MODEL:
    HP+®
    UNITS:
    EACH
    BASE COLOR:
    SILVER
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    TYPE:
    OIL PUMP
    BASE COLOR:
    RED
    $869.15
    Qty in Cart: 0
    Quantity:
    Price:
    $869.15
    Subtotal:
  • FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7072

    FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7072

    FEULING OIL PUMP CORP.

    $1,091.75
    FEULING OIL PUMP CORP. Performance Oil System - Twin Cam
    09320028
    SKU:
    09320028
    Availability:
    Ships Same Business Day
    Weight:
    5.52 LBS
    MODEL:
    RACE SERIES®
    PRODUCT NAME:
    OIL SYSTEM
    STYLE:
    GEAR DRIVE
    TYPE:
    CAM PLATE
    BASE COLOR:
    RED
    BASE COLOR:
    SILVER
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    ALUMINUM
    COLOR/FINISH:
    RED
    FLOW RATE:
    STANDARD
    TYPE:
    OIL PUMP
    UNITS:
    EACH
    $1,091.75
    Qty in Cart: 0
    Quantity:
    Price:
    $1,091.75
    Subtotal:
  • FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7074

    FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7074

    FEULING OIL PUMP CORP.

    $911.55
    Combine all the needed components to finish your T/C® engine's oiling system, These kits increase oil pressure, oil volume, engine oil flow and return oil scavenging, eliminating wet sumping and oily air cleaners; test results show 25-35 degree cooler...
    09320029
    SKU:
    09320029
    Availability:
    Ships Same Business Day
    Weight:
    5.51 LBS
    FLOW RATE:
    STANDARD
    MODEL:
    HP+®
    PRODUCT NAME:
    OIL SYSTEM
    STYLE:
    GEAR DRIVE
    TYPE:
    CAM PLATE
    TYPE:
    OIL PUMP
    UNITS:
    EACH
    COLOR/FINISH:
    ALUMINUM
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    STYLE:
    CHAIN DRIVE
    BASE COLOR:
    SILVER
    $911.55
    Qty in Cart: 0
    Quantity:
    Price:
    $911.55
    Subtotal:
  • FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7075 FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7075

    FEULING OIL PUMP CORP. Performance Oil System - Twin Cam 7075

    FEULING OIL PUMP CORP.

    $1,091.75
    A properly engineered oil system is the foundation of engine reliability and performance. The FEULING Oil Pump Corp. Performance Oil System for Twin Cam engines delivers measurable improvements in oil pressure, flow, and cooling—eliminating wet sumping...
    09320030
    SKU:
    09320030
    Availability:
    Ships Same Business Day
    Weight:
    5.57 LBS
    BASE COLOR:
    SILVER
    MATERIAL:
    ALUMINUM
    TYPE:
    OIL PUMP
    COLOR/FINISH:
    ALUMINUM
    FLOW RATE:
    STANDARD
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    COLOR/FINISH:
    RED
    MODEL:
    RACE SERIES®
    PRODUCT NAME:
    OIL SYSTEM
    STYLE:
    GEAR DRIVE
    TYPE:
    CAM PLATE
    BASE COLOR:
    RED
    STYLE:
    CHAIN DRIVE
    $1,091.75
    Qty in Cart: 0
    Quantity:
    Price:
    $1,091.75
    Subtotal:
  • FEULING OIL PUMP CORP. Performance Oil System Chain Drive 7071

    FEULING OIL PUMP CORP. Performance Oil System Chain Drive 7071

    FEULING OIL PUMP CORP.

    $911.55
    Engine oil system performance directly impacts longevity, reliability, and power output—especially in high-demand applications. The Feuling Oil Pump Corp. Performance Oil System Chain Drive 7071 is engineered to maximize oil pressure, volume, and...
    09320069
    SKU:
    09320069
    Availability:
    Ships Same Business Day
    Weight:
    6.13 LBS
    PRODUCT NAME:
    OIL SYSTEM
    TYPE:
    CAM PLATE
    BASE COLOR:
    RED
    STYLE:
    CHAIN DRIVE
    BASE COLOR:
    SILVER
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    TYPE:
    OIL PUMP
    COLOR/FINISH:
    ALUMINUM
    COLOR/FINISH:
    RED
    FLOW RATE:
    STANDARD
    MODEL:
    HP+®
    UNITS:
    EACH
    $911.55
    Qty in Cart: 0
    Quantity:
    Price:
    $911.55
    Subtotal:
  • FEULING OIL PUMP CORP. Performance Oil System Conversion 7076

    FEULING OIL PUMP CORP. Performance Oil System Conversion 7076

    FEULING OIL PUMP CORP.

    $911.55
    A properly engineered oiling system is fundamental to engine longevity and performance—stock systems often struggle with volume, pressure consistency, and heat dissipation, particularly in high-demand applications. The Feuling 7076 Performance Oil System...
    09320071
    SKU:
    09320071
    Availability:
    Ships Same Business Day
    Weight:
    6.18 LBS
    COLOR/FINISH:
    ALUMINUM
    COLOR/FINISH:
    RED
    STYLE:
    CHAIN DRIVE
    TYPE:
    CAM PLATE
    TYPE:
    OIL PUMP
    UNITS:
    KIT
    BASE COLOR:
    RED
    MODEL:
    HP+®
    BASE COLOR:
    SILVER
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    CONVERSION KIT
    RIDING STYLE:
    STREET
    $911.55
    Qty in Cart: 0
    Quantity:
    Price:
    $911.55
    Subtotal:
  • FEULING OIL PUMP CORP. Oil Pump - OE+ - Twin Cam 7010

    FEULING OIL PUMP CORP. Oil Pump - OE+ - Twin Cam 7010

    FEULING OIL PUMP CORP.

    $339.15
    Made of 6061 billet aluminum with high-flow 2" chromoly gerotor gears, Oil pumps increase oil pressure and scavenge return volume, Feuling® OE+ stock replacement billet oil pumps deliver increased oil pressure and return scavenge volumes over the factory...
    09320089
    SKU:
    09320089
    Availability:
    Ships Same Business Day
    Weight:
    1.20 LBS
    PRODUCT NAME:
    PUMP
    COLOR/FINISH:
    ALUMINUM
    FLOW RATE:
    STANDARD
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    BASE COLOR:
    SILVER
    MODEL:
    OE+
    TYPE:
    OIL PUMP
    MATERIAL:
    6061 BILLET ALUMINUM
    $339.15
    Qty in Cart: 0
    Quantity:
    Price:
    $339.15
    Subtotal:
  • FEULING OIL PUMP CORP. Oil Pump - OE+ - Twin Cam 7030

    FEULING OIL PUMP CORP. Oil Pump - OE+ - Twin Cam 7030

    FEULING OIL PUMP CORP.

    $339.15
    Made of 6061 billet aluminum with high-flow 2" chromoly gerotor gears, Oil pumps increase oil pressure and scavenge return volume, Feuling® OE+ stock replacement billet oil pumps deliver increased oil pressure and return scavenge volumes over the factory...
    09320090
    SKU:
    09320090
    Availability:
    Ships Same Business Day
    Weight:
    1.30 LBS
    COLOR/FINISH:
    ALUMINUM
    PRODUCT NAME:
    PUMP
    RIDING STYLE:
    STREET
    BASE COLOR:
    SILVER
    FLOW RATE:
    STANDARD
    MODEL:
    OE+
    TYPE:
    OIL PUMP
    UNITS:
    EACH
    MATERIAL:
    6061 BILLET ALUMINUM
    $339.15
    Qty in Cart: 0
    Quantity:
    Price:
    $339.15
    Subtotal:
  • FEULING OIL PUMP CORP. Gear Oil System - OE+ 7080

    FEULING OIL PUMP CORP. Gear Oil System - OE+ 7080

    FEULING OIL PUMP CORP.

    $678.35
    Kits are an upgrade to the stock oiling system, delivering increased oil pressure and return scavenge volumes from an OE+ billet oil pump and matched OE+ billet cam plate (see OE+ oil pumps for complete specs), OE+ billet cam plates have increased...
    09320091
    SKU:
    09320091
    Availability:
    Ships Same Business Day
    Weight:
    3.05 LBS
    MODEL:
    OE+
    STYLE:
    GEAR DRIVE
    TYPE:
    OIL PUMP
    UNITS:
    KIT
    FLOW RATE:
    STANDARD
    TYPE:
    CAM SUPPORT
    FEATURES:
    -
    PRODUCT NAME:
    PLATE
    RIDING STYLE:
    STREET
    $678.35
    Qty in Cart: 0
    Quantity:
    Price:
    $678.35
    Subtotal:
  • FEULING OIL PUMP CORP. Chain Oil System - OE+ 7081

    FEULING OIL PUMP CORP. Chain Oil System - OE+ 7081

    FEULING OIL PUMP CORP.

    $678.35
    Kits are an upgrade to the stock oiling system, delivering increased oil pressure and return scavenge volumes from an OE+ billet oil pump and matched OE+ billet cam plate (see OE+ oil pumps for complete specs), OE+ billet cam plates have increased...
    09320092
    SKU:
    09320092
    Availability:
    Ships Same Business Day
    Weight:
    3.25 LBS
    PRODUCT NAME:
    PLATE
    UNITS:
    KIT
    FEATURES:
    INCLUDES TENSIONER PINS AND GUIDE HARDWARE
    FLOW RATE:
    STANDARD
    RIDING STYLE:
    STREET
    TYPE:
    CAM SUPPORT
    MODEL:
    OE+
    TYPE:
    OIL PUMP
    STYLE:
    CHAIN DRIVE
    $678.35
    Qty in Cart: 0
    Quantity:
    Price:
    $678.35
    Subtotal:
  • FEULING OIL PUMP CORP. Chain/Gear Oil System - OE+ - Twin Cam 7084

    FEULING OIL PUMP CORP. Chain/Gear Oil System - OE+ - Twin Cam 7084

    FEULING OIL PUMP CORP.

    $678.35
    Kits are an upgrade to the stock oiling system, delivering increased oil pressure and return scavenge volumes from an OE+ billet oil pump and matched OE+ billet cam plate (see OE+ oil pumps for complete specs), OE+ billet cam plates have increased...
    09320093
    SKU:
    09320093
    Availability:
    Ships Same Business Day
    Weight:
    3.05 LBS
    FEATURES:
    -
    STYLE:
    CHAIN DRIVE
    STYLE:
    GEAR DRIVE
    UNITS:
    KIT
    MODEL:
    OE+
    TYPE:
    OIL PUMP
    FLOW RATE:
    STANDARD
    PRODUCT NAME:
    PLATE
    RIDING STYLE:
    STREET
    TYPE:
    CAM SUPPORT
    $678.35
    Qty in Cart: 0
    Quantity:
    Price:
    $678.35
    Subtotal:
  • FEULING OIL PUMP CORP. Conversion Oil System - OE+ 7086

    FEULING OIL PUMP CORP. Conversion Oil System - OE+ 7086

    FEULING OIL PUMP CORP.

    $678.35
    Kits are an upgrade to the stock oiling system, delivering increased oil pressure and return scavenge volumes from an OE+ billet oil pump and matched OE+ billet cam plate (see OE+ oil pumps for complete specs), OE+ billet cam plates have increased...
    09320094
    SKU:
    09320094
    Availability:
    Ships Same Business Day
    Weight:
    3.40 LBS
    FEATURES:
    -
    UNITS:
    KIT
    FLOW RATE:
    STANDARD
    MODEL:
    OE+
    TYPE:
    CAM SUPPORT
    TYPE:
    OIL PUMP
    RIDING STYLE:
    STREET
    STYLE:
    CHAIN DRIVE
    PRODUCT NAME:
    CONVERSION KIT
    $678.35
    Qty in Cart: 0
    Quantity:
    Price:
    $678.35
    Subtotal:
  • FEULING OIL PUMP CORP. Inner Cam Bearing - XL 2073 FEULING OIL PUMP CORP. Inner Cam Bearing - XL 2073

    FEULING OIL PUMP CORP. Inner Cam Bearing - XL 2073

    FEULING OIL PUMP CORP.

    $21.15
    Bearings are heavy-duty full-complement style designed to accept the higher loads and demands of performance engines, Manufactured by Koyo® Torrington®, Made in the U.S.A.
    09251267
    SKU:
    09251267
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    RIDING STYLE:
    STREET
    TYPE:
    INNER
    UNITS:
    EACH
    PRODUCT NAME:
    CAM BEARING
    $21.15
    Qty in Cart: 0
    Quantity:
    Price:
    $21.15
    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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