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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
    FEULING® OE+ stock replacement billet cam plates are manufactured from 6061 aluminum, providing increased rigidity and machined to FEULING's high tolerance standards, Pressure relief valve and spring are pre-set, matched and seated by FEULING® with 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
    FEULING® OE+ stock replacement billet cam plates are manufactured from 6061 aluminum, providing increased rigidity and machined to FEULING's high tolerance standards, Pressure relief valve and spring are pre-set, matched and seated by FEULING® with a...
    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
    FEULING® OE+ stock replacement billet cam plates are manufactured from 6061 aluminum, providing increased rigidity and machined to FEULING's high tolerance standards, Pressure relief valve and spring are pre-set, matched and seated by FEULING® with a...
    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
    FEULING® OE+ stock replacement billet cam plates are manufactured from 6061 aluminum, providing increased rigidity and machined to FEULING's high tolerance standards, Pressure relief valve and spring are pre-set, matched and seated by FEULING® with a...
    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
    Offers more power than the 525 cams without sacrificing low end torque, Extremely smooth cam lobe layout maintains quiet valve train and produces the smoothest cruise power band available, Excellent bolt-in camshaft for stock to mid 96" and 103" engines...
    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
    Feuling highly recommends using one-piece pushrods instead of adjustable pushrods to maintain maximum cam/valve lift and reduce valvetrain harmonics and associated hydraulic lifter issues, Fixed length, 4130 chromoly one-piece pushrods with swedged...
    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
    Inner cam 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.
    09240239
    SKU:
    09240239
    Availability:
    Ships Same Business Day
    Weight:
    0.15 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
    Offers more power than the 525 cams without sacrificing low end torque, Extremely smooth cam lobe layout maintains quiet valve train and produces the smoothest cruise power band available, Excellent bolt-in camshaft for stock to mid 96" and 103" engines...
    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
    Maintains maximum valve lift; increases stiffness and column rigidity, Maximizes valve-train stability to increase engine rpm, horsepower and torque output, Minimal adjustment parameter eliminates flex and loss of valve-train stability problems,...
    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
    Good for all oil types., A special blend of fibers and resin creates a proprietary filter media that captures 95%1 of the dirt particles that can cause harmful engine wear., Start-up engine protection is delivered through a precision molded silicone anti...
    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: $11.25
    Now: $9.86
    Was: $11.25
    Easy-to-assemble high-quality oil lines and fittings, Fittings meet 96-hour salt spray testing and ship complete with sealing ferrule
    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: $11.25
    Now: $9.86
    Was: $11.25
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $11.25
    Now: $9.86
    Was: $11.25
    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: $5.80
    Now: $5.36
    Was: $5.80
    Easy-to-assemble high-quality oil lines and fittings, Fittings meet 96-hour salt spray testing and ship complete with sealing ferrule
    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: $5.80
    Now: $5.36
    Was: $5.80
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $5.80
    Now: $5.36
    Was: $5.80
    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: $109.76
    Was: $132.69
    Easy-to-assemble high-quality oil lines and fittings, PTFE liner is an inert material, compatible with all oils and hydraulic fluids, has a heat range of -106°C to 260°C (-158°F to 500°F) and shields oil systems from moisture, unlike other materials...
    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: $109.76
    Was: $132.69
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $132.69
    Now: $109.76
    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: $68.37
    Now: $56.66
    Was: $68.37
    Easy-to-assemble high-quality oil lines and fittings, PTFE liner is an inert material, compatible with all oils and hydraulic fluids, has a heat range of -106°C to 260°C (-158°F to 500°F) and shields oil systems from moisture, unlike other materials...
    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: $68.37
    Now: $56.66
    Was: $68.37
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $68.37
    Now: $56.66
    Was: $68.37
    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
    6061 billet aluminum construction with a polished finish, Optimized oil passages flow almost 30% more efficiently than others on the market, which means less oil pressure drop and cooler temps, Designed to be used with any aftermarket oil cooler, Made in...
    07120269
    SKU:
    07120269
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    BASE FINISH:
    POLISHED
    MATERIAL:
    BILLET ALUMINUM
    PRODUCT NAME:
    MOUNT
    TYPE:
    OIL FILTER
    COLOR/FINISH:
    POLISHED
    UNITS:
    EACH
    RIDING STYLE:
    STREET
    $169.95
    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
    Service kit includes two replacement quad-seal O-rings for Jagg HyperFlow Engine Oil Filter, Fits all H-D models w/ front-mount spin-on oil filters (3/4"-16 thread)
    07120556
    SKU:
    07120556
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MODEL:
    HYPERFLOW
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    OIL FILTER
    UNITS:
    KIT
    $10.95
    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
    JAMES GASKET Oil Pump Key - Big Twin
    DS194349
    SKU:
    DS194349
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    STREET
    TYPE:
    OIL PUMP
    UNITS:
    10 PACK
    PRODUCT NAME:
    KEY
    $22.20
    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
    Made in the U.S.A.
    09343431
    SKU:
    09343431
    Availability:
    Ships Same Business Day
    Weight:
    0.25 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
    K&N delivers a premium oil filter which is built with a synthetic media specifically designed to withstand the high concentrates of synthetic racing oils, A large filter media provides high-flow rates and outstanding oil filtration to keep your motor...
    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
    K&N delivers a premium oil filter which is built with a synthetic media specifically designed to withstand the high concentrates of synthetic racing oils, A large filter media provides high-flow rates and outstanding oil filtration to keep your motor...
    07120448
    SKU:
    07120448
    Availability:
    Ships Same Business Day
    Weight:
    0.80 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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