Select Your Ride

1
2
3

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. Outer Silent Chain 8063

    FEULING OIL PUMP CORP. Outer Silent Chain 8063

    FEULING OIL PUMP CORP.

    $42.95
    Stock replacement chains, Made in the U.S.A.
    09250956
    SKU:
    09250956
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    MOUNTING POSITION:
    OUTER
    RIDING STYLE:
    STREET
    TYPE:
    CAM
    PRODUCT NAME:
    CHAIN
    UNITS:
    EACH
    $42.95
    Qty in Cart: 0
    Quantity:
    Price:
    $42.95
    Subtotal:
  • FEULING OIL PUMP CORP. Cam Kit - OE+ - 525 Series - Twin Cam 7320

    FEULING OIL PUMP CORP. Cam Kit - OE+ - 525 Series - Twin Cam 7320

    FEULING OIL PUMP CORP.

    $1,839.95
    Feuling® complete camchest kits include all necessary components from top to bottom of the camchest conveniently packaged under one part #, These combination kits not only ensure each individual part is designed to work and function together, but to do...
    09251280
    SKU:
    09251280
    Availability:
    Ships Same Business Day
    Weight:
    13.50 LBS
    GRIND:
    525 SERIES
    INTAKE LIFT IMPERIAL:
    0.525'
    INTAKE LOBE CENTERLINE IMPERIAL:
    109°
    EXHAUST CLOSE IMPERIAL:
    5°
    EXHAUST DURATION IMPERIAL:
    236°
    EXHAUST LIFT IMPERIAL:
    0.535'
    EXHAUST LOBE CENTERLINE IMPERIAL:
    113°
    INTAKE CLOSE IMPERIAL:
    42°
    INTAKE DURATION IMPERIAL:
    226°
    MODEL:
    OE+
    PRODUCT NAME:
    CAMCHEST KIT
    UNITS:
    KIT
    EXHAUST OPEN IMPERIAL:
    51°
    TYPE:
    CHAIN
    INTAKE OPEN IMPERIAL:
    4°
    RIDING STYLE:
    STREET
    $1,839.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,839.95
    Subtotal:
  • PC RACING Oil Filter - Stainless Steel PC53-82

    PC RACING Oil Filter - Stainless Steel PC53-82

    PC RACING

    $59.95
    Made from laser-cut, medical-grade, 304 stainless steel micronic filter cloth, this filter provides 200% more filter area in many cases, Stainless filter catches items down to 35 microns, which is about three times better than most good paper or brass...
    07120459
    SKU:
    07120459
    Availability:
    Ships Same Business Day
    Weight:
    0.27 LBS
    FEATURES:
    REUSABLE
    RIDING STYLE:
    STREET
    BASE COLOR:
    SILVER
    COLOR/FINISH:
    STAINLESS STEEL
    MATERIAL:
    STAINLESS STEEL
    MICRON RATING:
    35 MICRONS
    UNITS:
    EACH
    MODEL:
    FLO
    BASE FINISH:
    POLISHED
    FILTER MEDIA MATERIAL:
    MICRONIC FILTER CLOTH
    MATERIAL:
    BILLET ALUMINUM
    PRODUCT NAME:
    OIL FILTER
    TYPE:
    DROP-IN
    $59.95
    Qty in Cart: 0
    Quantity:
    Price:
    $59.95
    Subtotal:
  • PINGEL Oil Pump Screens - Twin Cam 62169

    PINGEL Oil Pump Screens - Twin Cam 62169

    PINGEL

    $43.95
    Designed to protect the oil pump and cam plate from debris off the chain-tensioners or other particles that may come loose in a Twin Cam engine, Great to put in when doing a cam bearing job, Keeps cam bearing rollers from dropping into the center section...
    09320073
    SKU:
    09320073
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    SCREEN
    RIDING STYLE:
    STREET
    TYPE:
    OIL PUMP
    UNITS:
    KIT
    $43.95
    Qty in Cart: 0
    Quantity:
    Price:
    $43.95
    Subtotal:
  • COLONY Oil Plug Cadmium Big Twin 9645-2

    COLONY Oil Plug Cadmium Big Twin 9645-2

    COLONY

    $6.95
    Made in the U.S.A.
    09320057
    SKU:
    09320057
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    COLOR/FINISH:
    CADMIUM
    RIDING STYLE:
    STREET
    BASE COLOR:
    SILVER
    PRODUCT NAME:
    PLUG
    TYPE:
    OIL PUMP
    UNITS:
    EACH
    $6.95
    Qty in Cart: 0
    Quantity:
    Price:
    $6.95
    Subtotal:
  • COLONY Oil Plug Chrome Big Twin 9644-2 COLONY Oil Plug Chrome Big Twin 9644-2

    COLONY Oil Plug Chrome Big Twin 9644-2

    COLONY

    $10.95
    Made in the U.S.A.
    09320056
    SKU:
    09320056
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    BASE FINISH:
    CHROME
    PRODUCT NAME:
    PLUG
    RIDING STYLE:
    STREET
    TYPE:
    OIL PUMP
    COLOR/FINISH:
    CHROME
    UNITS:
    EACH
    $10.95
    Qty in Cart: 0
    Quantity:
    Price:
    $10.95
    Subtotal:
  • COLONY Oil Plug Chrome Big Twin 9876-2

    COLONY Oil Plug Chrome Big Twin 9876-2

    COLONY

    $10.95
    Oil plug for Big Twin models
    09320050
    SKU:
    09320050
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    COLOR/FINISH:
    CHROME
    PRODUCT NAME:
    PLUG
    RIDING STYLE:
    STREET
    BASE FINISH:
    CHROME
    TYPE:
    OIL PUMP
    UNITS:
    EACH
    $10.95
    Qty in Cart: 0
    Quantity:
    Price:
    $10.95
    Subtotal:
  • KIBBLEWHITE Wrist Pin Bushing 20-20812

    KIBBLEWHITE Wrist Pin Bushing 20-20812

    KIBBLEWHITE

    $7.86
    Constructed of SAE660 bearing bronze, Made in the U.S.A.
    09230368
    SKU:
    09230368
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    PRODUCT NAME:
    BUSHING
    RIDING STYLE:
    STREET
    TYPE:
    WRIST PIN
    UNITS:
    EACH
    MATERIAL:
    BRONZE
    STYLE:
    OVERSIZE
    $7.86
    Qty in Cart: 0
    Quantity:
    Price:
    $7.86
    Subtotal:
  • KIBBLEWHITE Wrist Pin Bushing 20-0645

    KIBBLEWHITE Wrist Pin Bushing 20-0645

    KIBBLEWHITE

    $29.77
    Constructed of SAE660 bearing bronze, Made in the U.S.A.
    09230468
    SKU:
    09230468
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    UNITS:
    EACH
    MATERIAL:
    BRONZE
    PRODUCT NAME:
    BUSHING
    RIDING STYLE:
    STREET
    STYLE:
    STANDARD
    TYPE:
    WRIST PIN
    $29.77
    Qty in Cart: 0
    Quantity:
    Price:
    $29.77
    Subtotal:
  • KIBBLEWHITE Wrist Pin Bushing - Twin Cam 20-20790

    KIBBLEWHITE Wrist Pin Bushing - Twin Cam 20-20790

    KIBBLEWHITE

    $16.50
    Constructed of SAE660 bearing bronze, Made in the U.S.A., Does not include oil holes. These must be drilled after installation
    09230354
    SKU:
    09230354
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MATERIAL:
    BRONZE
    STYLE:
    STANDARD
    RIDING STYLE:
    STREET
    TYPE:
    WRIST PIN
    UNITS:
    EACH
    PRODUCT NAME:
    BUSHING
    $16.50
    Qty in Cart: 0
    Quantity:
    Price:
    $16.50
    Subtotal:
  • KIBBLEWHITE VALVE EXHAUST 1.575" 20-20776

    KIBBLEWHITE VALVE EXHAUST 1.575" 20-20776

    KIBBLEWHITE

    $31.01
    Some Twin Cam heads using 7.0mm valves may crack in the port end of the valve guide boss, These valves have .005" oversize stems to re-establish the correct valve stem to valve guide clearance if the head has cracked, Valve guides must be reamed/honed to...
    09262719
    SKU:
    09262719
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    APPLICATION:
    EXHAUST
    BASE COLOR:
    BLACK
    HEAD DIAMETER IMPERIAL:
    1.575'
    MODEL:
    BLACK DIAMONDâ„¢
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.2805'
    UNITS:
    EACH
    LENGTH IMPERIAL:
    4.510'
    RIDING STYLE:
    STREET
    TULIP ANGLE:
    23°
    COLOR/FINISH:
    BLACK
    $31.01
    Qty in Cart: 0
    Quantity:
    Price:
    $31.01
    Subtotal:
  • KIBBLEWHITE Spring Kit - Twin Cam/XL 20-20364

    KIBBLEWHITE Spring Kit - Twin Cam/XL 20-20364

    KIBBLEWHITE

    $142.97
    600" max lift kits are designed for maximum performance, Feature interference-wound, double-chrome silicone springs; heat-treated steel base washers, Include steel retainers, Made in the U.S.A.
    09260184
    SKU:
    09260184
    Availability:
    Ships Same Business Day
    Weight:
    1.55 LBS
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    SPRING LIFT IMPERIAL:
    0.600'
    TYPE:
    VALVE
    PRODUCT NAME:
    SPRING KIT
    UNITS:
    KIT
    APPLICATION:
    EXHAUST
    COLLAR MATERIAL:
    STEEL
    RIDING STYLE:
    STREET
    SPRING LIFT:
    0,600'
    SPRING OPEN PRESSURE:
    347 LB
    SPRING SEAT PRESSURE:
    150 LB
    $142.97
    Qty in Cart: 0
    Quantity:
    Price:
    $142.97
    Subtotal:
  • KIBBLEWHITE Intake Valve - Twin Cam 20-20322

    KIBBLEWHITE Intake Valve - Twin Cam 20-20322

    KIBBLEWHITE

    $37.55
    One-piece stainless-steel, stellite-tipped valves impregnated by a special nitrided process with .002" depth and .0002" surface buildup to improve wear properties and reduce friction, This process provides resistance to corrosion; wears superior to hard...
    09260193
    SKU:
    09260193
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    APPLICATION:
    INTAKE
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.2754'
    UNITS:
    EACH
    HEAD DIAMETER IMPERIAL:
    1.805'
    LENGTH IMPERIAL:
    4.420'
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    TULIP ANGLE:
    1,7' R
    TULIP ANGLE IMPERIAL:
    1.7° R
    $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    $37.55
    Subtotal:
  • KIBBLEWHITE Intake Valve - Twin Cam 20-20323R

    KIBBLEWHITE Intake Valve - Twin Cam 20-20323R

    KIBBLEWHITE

    $37.55
    One-piece stainless-steel, stellite-tipped valves impregnated by a special nitrided process with .002" depth and .0002" surface buildup to improve wear properties and reduce friction, This process provides resistance to corrosion; wears superior to hard...
    09260194
    SKU:
    09260194
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    APPLICATION:
    INTAKE
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.2754'
    UNITS:
    EACH
    HEAD DIAMETER IMPERIAL:
    1.900'
    LENGTH IMPERIAL:
    4.420'
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    TULIP ANGLE:
    28°
    $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    $37.55
    Subtotal:
  • KIBBLEWHITE Exhaust Valve - Twin Cam 20-20325

    KIBBLEWHITE Exhaust Valve - Twin Cam 20-20325

    KIBBLEWHITE

    $37.55
    One-piece stainless-steel, stellite-tipped valves impregnated by a special nitrided process with .002" depth and .0002" surface buildup to improve wear properties and reduce friction, This process provides resistance to corrosion; wears superior to hard...
    09260195
    SKU:
    09260195
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    LENGTH IMPERIAL:
    4.520'
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.2754'
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    HEAD DIAMETER IMPERIAL:
    1.575'
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    TULIP ANGLE:
    22°
    $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    $37.55
    Subtotal:
  • KIBBLEWHITE Exhaust Valve - Twin Cam 20-20326R

    KIBBLEWHITE Exhaust Valve - Twin Cam 20-20326R

    KIBBLEWHITE

    $37.55
    One-piece stainless-steel, stellite-tipped valves impregnated by a special nitrided process with .002" depth and .0002" surface buildup to improve wear properties and reduce friction, This process provides resistance to corrosion; wears superior to hard...
    09260196
    SKU:
    09260196
    Availability:
    Ships Same Business Day
    Weight:
    0.17 LBS
    RIDING STYLE:
    STREET
    TULIP ANGLE:
    34°
    APPLICATION:
    EXHAUST
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BLACK DIAMONDâ„¢
    PRODUCT NAME:
    VALVE
    HEAD DIAMETER IMPERIAL:
    1.630'
    LENGTH IMPERIAL:
    4.520'
    STEM DIAMETER IMPERIAL:
    0.2754'
    UNITS:
    EACH
    $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    $37.55
    Subtotal:
  • KIBBLEWHITE Valve Seat 10-HC440

    KIBBLEWHITE Valve Seat 10-HC440

    KIBBLEWHITE

    $14.47
    Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...
    09263355
    SKU:
    09263355
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    INSIDE DIAMETER METRIC:
    35.81 MM
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    OUTSIDE DIAMETER IMPERIAL:
    1.732'
    PRODUCT NAME:
    VALVE SEAT
    RIDING STYLE:
    STREET
    $14.47
    Qty in Cart: 0
    Quantity:
    Price:
    $14.47
    Subtotal:
  • KIBBLEWHITE Valve Seat 10-HC447

    KIBBLEWHITE Valve Seat 10-HC447

    KIBBLEWHITE

    $14.47
    Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...
    09263358
    SKU:
    09263358
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    OUTSIDE DIAMETER IMPERIAL:
    1.757'
    RIDING STYLE:
    STREET
    APPLICATION:
    EXHAUST
    INSIDE DIAMETER METRIC:
    35.81 MM
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE SEAT
    UNITS:
    EACH
    $14.47
    Qty in Cart: 0
    Quantity:
    Price:
    $14.47
    Subtotal:
  • KIBBLEWHITE Valve Seat 10-HC478

    KIBBLEWHITE Valve Seat 10-HC478

    KIBBLEWHITE

    $14.47
    Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...
    09263359
    SKU:
    09263359
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    INSIDE DIAMETER METRIC:
    38.61 MM
    OUTSIDE DIAMETER IMPERIAL:
    1.882'
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE SEAT
    APPLICATION:
    EXHAUST
    $14.47
    Qty in Cart: 0
    Quantity:
    Price:
    $14.47
    Subtotal:
  • KIBBLEWHITE Valve Seat 10-HC493

    KIBBLEWHITE Valve Seat 10-HC493

    KIBBLEWHITE

    $14.47
    Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...
    09263360
    SKU:
    09263360
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    APPLICATION:
    EXHAUST
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    RIDING STYLE:
    STREET
    OUTSIDE DIAMETER IMPERIAL:
    1.944'
    PRODUCT NAME:
    VALVE SEAT
    INSIDE DIAMETER METRIC:
    40.01 MM
    $14.47
    Qty in Cart: 0
    Quantity:
    Price:
    $14.47
    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

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER