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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. Tensioner Conversion Kit 7089

    FEULING OIL PUMP CORP. Tensioner Conversion Kit 7089

    FEULING OIL PUMP CORP.

    $869.95
    If you're running an early 99-06 Harley-Davidson with a mechanical cam chain tensioner, you're operating with outdated technology that demands constant maintenance and monitoring. This Feuling conversion kit upgrades your entire cam drive system to the...
    09251062
    SKU:
    09251062
    Availability:
    Ships Same Business Day
    Weight:
    6.30 LBS
    MODEL:
    OE+
    PRODUCT NAME:
    TENSIONER CONVERSION KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    TYPE:
    CAM PLATE
    $869.95
    Qty in Cart: 0
    Quantity:
    Price:
    $869.95
    Subtotal:
  • FEULING OIL PUMP CORP. Tensioner Conversion Kit 7088

    FEULING OIL PUMP CORP. Tensioner Conversion Kit 7088

    FEULING OIL PUMP CORP.

    $839.95
    Early Harley cam chain tensioner systems are prone to wear and rattle, compromising engine reliability and performance. This Feuling conversion kit upgrades your 99-06 mechanical tensioner setup to the superior late 07-16 hydraulic system, eliminating...
    09251061
    SKU:
    09251061
    Availability:
    Ships Same Business Day
    Weight:
    5.75 LBS
    PRODUCT NAME:
    TENSIONER CONVERSION KIT
    RIDING STYLE:
    STREET
    MODEL:
    OE+
    UNITS:
    KIT
    TYPE:
    CAMSHAFT
    $839.95
    Qty in Cart: 0
    Quantity:
    Price:
    $839.95
    Subtotal:
  • FEULING OIL PUMP CORP. Tensioner Conversion Kit 7087

    FEULING OIL PUMP CORP. Tensioner Conversion Kit 7087

    FEULING OIL PUMP CORP.

    $869.95
    If you're running an early 99-06 Harley-Davidson cam chain drive system, you're operating with outdated mechanical tensioning that can't adapt to changing engine loads and RPM demands. This Feuling conversion kit upgrades you to the superior late 07-16...
    09251060
    SKU:
    09251060
    Availability:
    Ships Same Business Day
    Weight:
    5.55 LBS
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    TENSIONER CONVERSION KIT
    TYPE:
    CAMSHAFT
    MODEL:
    OE+
    UNITS:
    KIT
    $869.95
    Qty in Cart: 0
    Quantity:
    Price:
    $869.95
    Subtotal:
  • FEULING OIL PUMP CORP. Sprocket Cam 1092

    FEULING OIL PUMP CORP. Sprocket Cam 1092

    FEULING OIL PUMP CORP.

    $69.95
    Reliable cam chain drive integrity is non-negotiable in high-revving Twin Cam engines where stock sprockets wear prematurely under sustained performance loads. The FEULING OIL PUMP CORP. Sprocket Cam 1092 delivers precision-machined steel construction...
    09251059
    SKU:
    09251059
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    PRODUCT NAME:
    DRIVE SPROCKET
    RIDING STYLE:
    STREET
    TYPE:
    CAM
    UNITS:
    EACH
    MATERIAL:
    STEEL
    $69.95
    Qty in Cart: 0
    Quantity:
    Price:
    $69.95
    Subtotal:
  • FEULING OIL PUMP CORP. Sprocket Cam 1091

    FEULING OIL PUMP CORP. Sprocket Cam 1091

    FEULING OIL PUMP CORP.

    $59.95
    The Feuling Oil Pump Corp. Sprocket Cam 1091 is an essential upgrade if you're running a Twin Cam engine with high-performance demands or converting to a hydraulic cam chain tensioning system. This direct replacement sprocket eliminates weak OEM...
    09251058
    SKU:
    09251058
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    RIDING STYLE:
    STREET
    MATERIAL:
    STEEL
    PRODUCT NAME:
    DRIVE SPROCKET
    UNITS:
    EACH
    TYPE:
    CAMSHAFT
    $59.95
    Qty in Cart: 0
    Quantity:
    Price:
    $59.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft - 594 Series - Evolution 1393

    FEULING OIL PUMP CORP. Camshaft - 594 Series - Evolution 1393

    FEULING OIL PUMP CORP.

    $279.95
    The Feuling 594 Series camshaft delivers the aggressive power band your big-inch or high-revving Harley demands, whether you're chasing low-end torque in a 103-124ci cruiser or peak horsepower in a nimble 95ci screamer. This is a purpose-built cam...
    09251039
    SKU:
    09251039
    Availability:
    Ships Same Business Day
    Weight:
    1.96 LBS
    APPLICATION:
    INTAKE
    EXHAUST OPEN IMPERIAL:
    64°
    INTAKE CLOSE IMPERIAL:
    56°
    INTAKE DURATION IMPERIAL:
    255°
    INTAKE LIFT IMPERIAL:
    0.594'
    MODEL:
    REAPER
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    EXHAUST CLOSE IMPERIAL:
    16°
    INTAKE OPEN IMPERIAL:
    19°
    RIDING STYLE:
    STREET
    TYPE:
    GEAR
    EXHAUST LIFT IMPERIAL:
    0.604'
    GRIND:
    594 SERIES
    EXHAUST DURATION IMPERIAL:
    260°
    PRODUCT NAME:
    CAMSHAFT
    $279.95
    Qty in Cart: 0
    Quantity:
    Price:
    $279.95
    Subtotal:
  • FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 543 Series - Evolution 1391

    FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 543 Series - Evolution 1391

    FEULING OIL PUMP CORP.

    $279.95
    The Feuling Oil Pump Corp. Gear Drive Reaper Cam 543 Series delivers measurable power gains across the entire RPM band without sacrificing the low-end torque that keeps your engine responsive in real-world riding conditions. This is the cam of choice for...
    09251038
    SKU:
    09251038
    Availability:
    Ships Same Business Day
    Weight:
    2.01 LBS
    APPLICATION:
    INTAKE
    EXHAUST CLOSE IMPERIAL:
    12°
    INTAKE CLOSE IMPERIAL:
    43°
    INTAKE DURATION IMPERIAL:
    238°
    INTAKE OPEN IMPERIAL:
    15°
    UNITS:
    EACH
    EXHAUST DURATION IMPERIAL:
    248°
    EXHAUST LIFT IMPERIAL:
    0.553'
    MODEL:
    REAPER
    APPLICATION:
    EXHAUST
    EXHAUST OPEN IMPERIAL:
    56°
    TYPE:
    GEAR
    GRIND:
    543 SERIES
    INTAKE LIFT IMPERIAL:
    0.543'
    PRODUCT NAME:
    CAMSHAFT
    RIDING STYLE:
    STREET
    $279.95
    Qty in Cart: 0
    Quantity:
    Price:
    $279.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft - 518 Grind - Evolution 1390

    FEULING OIL PUMP CORP. Camshaft - 518 Grind - Evolution 1390

    FEULING OIL PUMP CORP.

    $279.95
    If you're looking to unlock genuine mid-range power from your Evolution engine without a complete rebuild, the Feuling 518 Grind delivers measurable gains where most riders spend their time. This direct bolt-in camshaft integrates seamlessly with your...
    09251037
    SKU:
    09251037
    Availability:
    Ships Same Business Day
    Weight:
    2.01 LBS
    GRIND:
    518 SERIES
    TYPE:
    GEAR
    APPLICATION:
    EXHAUST
    EXHAUST LIFT IMPERIAL:
    0.528'
    EXHAUST OPEN IMPERIAL:
    51°
    PRODUCT NAME:
    CAMSHAFT
    APPLICATION:
    INTAKE
    EXHAUST CLOSE IMPERIAL:
    5°
    EXHAUST DURATION IMPERIAL:
    236°
    INTAKE CLOSE IMPERIAL:
    42°
    INTAKE DURATION IMPERIAL:
    226°
    INTAKE LIFT IMPERIAL:
    0.518'
    MODEL:
    REAPER
    UNITS:
    EACH
    INTAKE OPEN IMPERIAL:
    4°
    RIDING STYLE:
    STREET
    $279.95
    Qty in Cart: 0
    Quantity:
    Price:
    $279.95
    Subtotal:
  • FEULING OIL PUMP CORP. Chain Drive Cam - 630 Series 1003

    FEULING OIL PUMP CORP. Chain Drive Cam - 630 Series 1003

    FEULING OIL PUMP CORP.

    $399.95
    If you're serious about unlocking peak performance from your engine, the Feuling Oil Pump Corp. Chain Drive Cam 630 Series is engineered to deliver exactly what your build needs. This cam maintains strong low-end torque while unleashing eye-blurring mid...
    09250754
    SKU:
    09250754
    Availability:
    Ships Same Business Day
    Weight:
    3.15 LBS
    APPLICATION:
    EXHAUST
    EXHAUST LIFT IMPERIAL:
    0.630'
    INTAKE CLOSE IMPERIAL:
    58°
    MODEL:
    REAPER
    TYPE:
    CHAIN
    APPLICATION:
    INTAKE
    EXHAUST CLOSE IMPERIAL:
    19°
    EXHAUST OPEN IMPERIAL:
    64°
    INTAKE DURATION IMPERIAL:
    258°
    INTAKE LIFT IMPERIAL:
    0.630'
    INTAKE OPEN IMPERIAL:
    20°
    RIDING STYLE:
    STREET
    EXHAUST DURATION IMPERIAL:
    263°
    GRIND:
    630 SERIES
    PRODUCT NAME:
    CAMSHAFT
    UNITS:
    PAIR
    Qty in Cart: 0
    Quantity:
    Price:
    $399.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft Installation Kit - Chain Drive 2059

    FEULING OIL PUMP CORP. Camshaft Installation Kit - Chain Drive 2059

    FEULING OIL PUMP CORP.

    $182.95
    A proper camshaft installation requires precision fastening and quality seals to ensure reliability under high RPM loads. This Feuling kit eliminates guesswork by bundling all critical components—from ARP fasteners to OEM-grade gaskets—so you're not...
    09250753
    SKU:
    09250753
    Availability:
    Ships Same Business Day
    Weight:
    1.30 LBS
    PRODUCT NAME:
    INSTALLATION KIT
    TYPE:
    CHAIN
    MODEL:
    PLUS
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    TYPE:
    CAMSHAFT
    $182.95
    Qty in Cart: 0
    Quantity:
    Price:
    $182.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft Installation Kit - Chain Drive 2058

    FEULING OIL PUMP CORP. Camshaft Installation Kit - Chain Drive 2058

    FEULING OIL PUMP CORP.

    $149.95
    A complete camshaft installation demands precision fasteners, proper bearing support, and quality sealing—this kit eliminates guesswork by bundling everything you need in one package. Whether you're performing routine maintenance or installing a...
    09250752
    SKU:
    09250752
    Availability:
    Ships Same Business Day
    Weight:
    1.21 LBS
    PRODUCT NAME:
    INSTALLATION KIT
    TYPE:
    CHAIN
    UNITS:
    KIT
    MODEL:
    STANDARD
    RIDING STYLE:
    STREET
    TYPE:
    CAMSHAFT
    $149.95
    Qty in Cart: 0
    Quantity:
    Price:
    $149.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshafts - 505/515 XL 1370

    FEULING OIL PUMP CORP. Camshafts - 505/515 XL 1370

    FEULING OIL PUMP CORP.

    $459.95
    If you're running a stock or lightly modified XL engine and want serious mid-range grunt without replacing your entire valve train, the Feuling 505/515 camshaft delivers a broad, usable powerband that sounds like a purpose-built racer. This split-lift...
    09250748
    SKU:
    09250748
    Availability:
    Ships Same Business Day
    Weight:
    4.20 LBS
    APPLICATION:
    EXHAUST
    EXHAUST LIFT IMPERIAL:
    0.515'
    INTAKE CLOSE IMPERIAL:
    48°
    INTAKE DURATION IMPERIAL:
    239°
    UNITS:
    SET
    EXHAUST CLOSE IMPERIAL:
    15°
    EXHAUST DURATION IMPERIAL:
    248°
    GRIND:
    515 SERIES
    INTAKE OPEN IMPERIAL:
    11°
    MODEL:
    REAPER
    APPLICATION:
    INTAKE
    EXHAUST OPEN IMPERIAL:
    53°
    GRIND:
    505 SERIES
    INTAKE LIFT IMPERIAL:
    0.505'
    TYPE:
    GEAR
    PRODUCT NAME:
    CAMSHAFT
    RIDING STYLE:
    STREET
    $459.95
    Qty in Cart: 0
    Quantity:
    Price:
    $459.95
    Subtotal:
  • FEULING OIL PUMP CORP. Cam - 594 Series - Gear Drive 1304

    FEULING OIL PUMP CORP. Cam - 594 Series - Gear Drive 1304

    FEULING OIL PUMP CORP.

    $399.95
    The Feuling 594 Series Cam is engineered for riders who demand maximum performance across a broad RPM range. Whether you're building a heavyweight cruiser or a nimble mid-displacement machine, this camshaft delivers the torque and horsepower gains...
    09250728
    SKU:
    09250728
    Availability:
    Ships Same Business Day
    Weight:
    3.00 LBS
    EXHAUST CLOSE IMPERIAL:
    16°
    EXHAUST LIFT IMPERIAL:
    0.604'
    INTAKE OPEN IMPERIAL:
    19°
    PRODUCT NAME:
    CAMSHAFT
    UNITS:
    PAIR
    EXHAUST DURATION IMPERIAL:
    260°
    GRIND:
    594 SERIES
    INTAKE DURATION IMPERIAL:
    255°
    INTAKE LIFT IMPERIAL:
    0.594'
    APPLICATION:
    INTAKE
    EXHAUST OPEN IMPERIAL:
    64°
    INTAKE CLOSE IMPERIAL:
    56°
    RIDING STYLE:
    STREET
    TYPE:
    GEAR
    APPLICATION:
    EXHAUST
    MODEL:
    REAPER
    $399.95
    Qty in Cart: 0
    Quantity:
    Price:
    $399.95
    Subtotal:
  • ANDREWS Cam Set - Dyna - Twin Cam 216357

    ANDREWS Cam Set - Dyna - Twin Cam 216357

    ANDREWS

    $415.95
    If you're running a Dyna or Twin Cam engine and want more usable torque without major internal modifications, the ANDREWS Cam Set 216357 delivers measurable power gains across the rpm range where it matters most. This bolt-in cam works seamlessly with...
    09250668
    SKU:
    09250668
    Availability:
    Ships Same Business Day
    Weight:
    3.18 LBS
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    EXHAUST DURATION IMPERIAL:
    240°
    EXHAUST LIFT AT TDC IMPERIAL:
    0.153'
    EXHAUST LOBE CENTERLINE IMPERIAL:
    106°
    GRIND:
    57 SERIES
    TYPE:
    CHAIN
    EXHAUST OPEN IMPERIAL:
    38°
    INTAKE DURATION IMPERIAL:
    236°
    INTAKE LOBE CENTERLINE IMPERIAL:
    100°
    EXHAUST CLOSE IMPERIAL:
    14°
    EXHAUST LIFT IMPERIAL:
    0.560'
    INTAKE CLOSE IMPERIAL:
    46°
    UNITS:
    PAIR
    INTAKE LIFT AT TDC IMPERIAL:
    0.184'
    INTAKE LIFT IMPERIAL:
    0.560'
    INTAKE OPEN IMPERIAL:
    18°
    PRODUCT NAME:
    CAM KIT
    RIDING STYLE:
    STREET
    Qty in Cart: 0
    Quantity:
    Price:
    $415.95
    Subtotal:
  • FEULING OIL PUMP CORP. Chain Pins Tensioner 8003

    FEULING OIL PUMP CORP. Chain Pins Tensioner 8003

    FEULING OIL PUMP CORP.

    $29.95
    When you're replacing Twin Cam chain drive components, precision matters—and that's where the Feuling Oil Pump Corp. Chain Pins Tensioner 8003 comes in. This heat-treated chromoly steel tool ensures a proper press fit every time you swap cam plates or...
    09250439
    SKU:
    09250439
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    MATERIAL:
    STEEL
    TYPE:
    CAM PLATE
    PRODUCT NAME:
    TENSIONER PIN
    RIDING STYLE:
    STREET
    UNITS:
    PAIR
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • FEULING OIL PUMP CORP. Pressure Relief Kit 8002

    FEULING OIL PUMP CORP. Pressure Relief Kit 8002

    FEULING OIL PUMP CORP.

    $24.95
    Stock oil pressure relief systems often compromise between engine protection and optimal flow, leaving performance on the table. The Feuling Oil Pump Corp. Pressure Relief Kit 8002 gives you precise control over pop-off pressure, ensuring your oil system...
    09250438
    SKU:
    09250438
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    PRODUCT NAME:
    PRESSURE RELIEF KIT
    TYPE:
    CAM PLATE
    $24.95
    Qty in Cart: 0
    Quantity:
    Price:
    $24.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft Installation Kit - Chain Drive 2070

    FEULING OIL PUMP CORP. Camshaft Installation Kit - Chain Drive 2070

    FEULING OIL PUMP CORP.

    $99.95
    A quality camshaft installation requires precision fasteners, proper bearing support, and the right gasket seals—this kit delivers all three. Whether you're performing routine maintenance or upgrading to a high-lift cam, the Feuling 2070 eliminates...
    09250436
    SKU:
    09250436
    Availability:
    Ships Same Business Day
    Weight:
    0.86 LBS
    MODEL:
    STANDARD
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    TYPE:
    CAMSHAFT
    PRODUCT NAME:
    INSTALLATION KIT
    TYPE:
    CHAIN
    $99.95
    Qty in Cart: 0
    Quantity:
    Price:
    $99.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft Installation Kit - Gear Drive 2065

    FEULING OIL PUMP CORP. Camshaft Installation Kit - Gear Drive 2065

    FEULING OIL PUMP CORP.

    $119.95
    A camshaft installation requires precision assembly and the right hardware to ensure proper valve timing and engine reliability. This Feuling kit eliminates guesswork by bundling every fastener, bearing, gasket, and O-ring you need for a complete,...
    09250435
    SKU:
    09250435
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    RIDING STYLE:
    STREET
    MODEL:
    STANDARD
    TYPE:
    CAMSHAFT
    PRODUCT NAME:
    INSTALLATION KIT
    UNITS:
    KIT
    TYPE:
    GEAR
    $119.95
    Qty in Cart: 0
    Quantity:
    Price:
    $119.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft Installation Kit - Gear Drive 2060

    FEULING OIL PUMP CORP. Camshaft Installation Kit - Gear Drive 2060

    FEULING OIL PUMP CORP.

    $137.95
    A proper camshaft installation requires precision fastening and quality gasket sealing—two areas where shortcuts lead to oil leaks, bearing failures, and timing issues down the line. The Feuling Oil Pump Corp. Gear Drive 2060 Kit eliminates guesswork by...
    09250434
    SKU:
    09250434
    Availability:
    Ships Same Business Day
    Weight:
    1.23 LBS
    MODEL:
    STANDARD
    RIDING STYLE:
    STREET
    TYPE:
    CAMSHAFT
    UNITS:
    KIT
    TYPE:
    GEAR
    PRODUCT NAME:
    INSTALLATION KIT
    $137.95
    Qty in Cart: 0
    Quantity:
    Price:
    $137.95
    Subtotal:
  • ANDREWS A2 Grind Cam 212263

    ANDREWS A2 Grind Cam 212263

    ANDREWS

    $251.95
    If you're running a Big Twin and want genuine mid-range and high-end power without sacrificing reliability, the Andrews A2 Grind Cam delivers where it counts. This is a bolt-in upgrade that transforms your engine's power curve without requiring head work...
    09250292
    SKU:
    09250292
    Availability:
    Ships Same Business Day
    Weight:
    1.98 LBS
    APPLICATION:
    INTAKE
    EXHAUST LIFT AT TDC IMPERIAL:
    SHOVEL: 0.142' PAN: 0.150'
    TYPE:
    GEAR
    APPLICATION:
    EXHAUST
    EXHAUST LIFT IMPERIAL:
    SHOVEL: 0.450' PAN: 0.470'
    GRIND:
    A2
    PRODUCT NAME:
    CAM
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    INTAKE LIFT AT TDC IMPERIAL:
    SHOVEL: 0.156' PAN: 0.164'
    INTAKE LIFT IMPERIAL:
    SHOVEL: 0.450' PAN: 0.470'
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    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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