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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. Camchest Kit - HP+‚® - Twin Cam 7206P

    FEULING OIL PUMP CORP. Camchest Kit - HP+‚® - Twin Cam 7206P

    FEULING OIL PUMP CORP.

    $1,649.95
    All necessary components from top-to-bottom of the camchest, Provide maximum reliability, longevity, peak performance, and the coolest engine and oil temperatures obtainable, Quieter and smoother engine operation, Increase oil pressure, scavenge volume...
    09251377
    SKU:
    09251377
    Availability:
    Ships Same Business Day
    Weight:
    11.76 LBS
    PRODUCT NAME:
    CAMCHEST KIT
    UNITS:
    KIT
    GRIND:
    525 SERIES
    MODEL:
    HP+®
    RIDING STYLE:
    STREET
    TYPE:
    CHAIN
    $1,649.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,649.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camchest Kit - HP+‚® - Twin Cam 7207P

    FEULING OIL PUMP CORP. Camchest Kit - HP+‚® - Twin Cam 7207P

    FEULING OIL PUMP CORP.

    $1,649.95
    All necessary components from top-to-bottom of the camchest, Provide maximum reliability, longevity, peak performance, and the coolest engine and oil temperatures obtainable, Quieter and smoother engine operation, Increase oil pressure, scavenge volume...
    09251378
    SKU:
    09251378
    Availability:
    Ships Same Business Day
    Weight:
    11.26 LBS
    MODEL:
    HP+®
    TYPE:
    GEAR
    GRIND:
    574 SERIES
    PRODUCT NAME:
    CAMCHEST KIT
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    $1,649.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,649.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camchest Kit - HP+‚® - Twin Cam 7208P

    FEULING OIL PUMP CORP. Camchest Kit - HP+‚® - Twin Cam 7208P

    FEULING OIL PUMP CORP.

    $1,649.95
    All necessary components from top-to-bottom of the camchest, Provide maximum reliability, longevity, peak performance, and the coolest engine and oil temperatures obtainable, Quieter and smoother engine operation, Increase oil pressure, scavenge volume...
    09251379
    SKU:
    09251379
    Availability:
    Ships Same Business Day
    Weight:
    9.81 LBS
    GRIND:
    574 SERIES
    MODEL:
    HP+®
    TYPE:
    GEAR
    PRODUCT NAME:
    CAMCHEST KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    $1,649.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,649.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camchest Kit - HP+‚® - Twin Cam 7209P

    FEULING OIL PUMP CORP. Camchest Kit - HP+‚® - Twin Cam 7209P

    FEULING OIL PUMP CORP.

    $1,649.95
    All necessary components from top-to-bottom of the camchest, Provide maximum reliability, longevity, peak performance, and the coolest engine and oil temperatures obtainable, Quieter and smoother engine operation, Increase oil pressure, scavenge volume...
    09251380
    SKU:
    09251380
    Availability:
    Ships Same Business Day
    Weight:
    11.56 LBS
    PRODUCT NAME:
    CAMCHEST KIT
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    GRIND:
    574 SERIES
    MODEL:
    HP+®
    TYPE:
    CHAIN
    $1,649.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,649.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Springs - Econo Beehive - Twin Cam 1122

    FEULING OIL PUMP CORP. Valve Springs - Econo Beehive - Twin Cam 1122

    FEULING OIL PUMP CORP.

    $309.95
    Made from premium stress-relieved conical ovate wire, Feature extremely high-level of fatigue life, Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion, Designed to handle the demands of...
    09263322
    SKU:
    09263322
    Availability:
    Ships Same Business Day
    Weight:
    1.31 LBS
    PRODUCT NAME:
    SPRING KIT
    TYPE:
    VALVE
    MATERIAL:
    STEEL
    MODEL:
    ECONO BEEHIVE
    STYLE:
    OVATE WIRE BEEHIVE
    UNITS:
    KIT
    MATERIAL:
    TITANIUM
    RIDING STYLE:
    STREET
    STEM DIAMETER IMPERIAL:
    0.3125'
    $309.95
    Qty in Cart: 0
    Quantity:
    Price:
    $309.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Springs - Econo Beehive - Twin Cam 1123

    FEULING OIL PUMP CORP. Valve Springs - Econo Beehive - Twin Cam 1123

    FEULING OIL PUMP CORP.

    $309.95
    Made from premium stress-relieved conical ovate wire, Feature extremely high-level of fatigue life, Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion, Designed to handle the demands of...
    09263323
    SKU:
    09263323
    Availability:
    Ships Same Business Day
    Weight:
    1.31 LBS
    MODEL:
    ECONO BEEHIVE
    PRODUCT NAME:
    SPRING KIT
    STEM DIAMETER IMPERIAL:
    0.3125'
    TYPE:
    VALVE
    MATERIAL:
    TITANIUM
    RIDING STYLE:
    STREET
    STYLE:
    OVATE WIRE BEEHIVE
    MATERIAL:
    STEEL
    UNITS:
    KIT
    $309.95
    Qty in Cart: 0
    Quantity:
    Price:
    $309.95
    Subtotal:
  • FEULING OIL PUMP CORP. Adjustable Pushrods - Twin Cam 4065 FEULING OIL PUMP CORP. Adjustable Pushrods - Twin Cam 4065

    FEULING OIL PUMP CORP. Adjustable Pushrods - Twin Cam 4065

    FEULING OIL PUMP CORP.

    $189.95
    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,...
    09280009
    SKU:
    09280009
    Availability:
    Ships Same Business Day
    Weight:
    1.32 LBS
    PRODUCT NAME:
    PUSHROD SET
    MODEL:
    HP+®
    STYLE:
    ADJUSTABLE
    UNITS:
    SET OF 4
    WALL THICKNESS IMPERIAL:
    0.095'
    MATERIAL:
    CHROMOLY STEEL
    RIDING STYLE:
    STREET
    WALL THICKNESS:
    0,095'
    DIAMETER IMPERIAL:
    7/16'
    $189.95
    Qty in Cart: 0
    Quantity:
    Price:
    $189.95
    Subtotal:
  • FEULING OIL PUMP CORP. HP+‚® Pushrods - M8 4087 FEULING OIL PUMP CORP. HP+‚® Pushrods - M8 4087

    FEULING OIL PUMP CORP. HP+‚® Pushrods - M8 4087

    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...
    09280091
    SKU:
    09280091
    Availability:
    Ships Same Business Day
    Weight:
    1.51 LBS
    PRODUCT NAME:
    PUSHROD
    FEATURES:
    STOCK REPLACEMENT
    RIDING STYLE:
    STREET
    STYLE:
    FIXED LENGTH
    UNITS:
    SET OF 4
    $179.95
    Qty in Cart: 0
    Quantity:
    Price:
    $179.95
    Subtotal:
  • FEULING OIL PUMP CORP. HP+‚® Pushrods - +.030" - Twin Cam 4073

    FEULING OIL PUMP CORP. HP+‚® Pushrods - +.030" - Twin Cam 4073

    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...
    09280102
    SKU:
    09280102
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    FEATURES:
    0.030' LONGER
    UNITS:
    SET OF 4
    PRODUCT NAME:
    PUSHROD
    RIDING STYLE:
    STREET
    STYLE:
    FIXED LENGTH
    $179.95
    Qty in Cart: 0
    Quantity:
    Price:
    $179.95
    Subtotal:
  • FEULING OIL PUMP CORP. Race Pushrods - Evolution 4080

    FEULING OIL PUMP CORP. Race Pushrods - Evolution 4080

    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,...
    09280103
    SKU:
    09280103
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    UNITS:
    SET OF 4
    WALL THICKNESS:
    0,145'
    MATERIAL:
    CHROMOLY STEEL
    RIDING STYLE:
    STREET
    DIAMETER IMPERIAL:
    3/8'
    MODEL:
    RACE SERIES®
    PRODUCT NAME:
    PUSHROD SET
    STYLE:
    ADJUSTABLE
    WALL THICKNESS IMPERIAL:
    0.145'
    $229.95
    Qty in Cart: 0
    Quantity:
    Price:
    $229.95
    Subtotal:
  • FEULING OIL PUMP CORP. Pushrod Tube Kit - Twin Cam 4095 FEULING OIL PUMP CORP. Pushrod Tube Kit - Twin Cam 4095

    FEULING OIL PUMP CORP. Pushrod Tube Kit - Twin Cam 4095

    FEULING OIL PUMP CORP.

    $99.95
    Pushrod tube kit for use on Twin Cam engines using quick install style pushrods that require more clearance inside the tube covers to adjust, Kit includes lower tubes and clips only, Use with factory inner tubes, cover cap, spring and washer
    09280104
    SKU:
    09280104
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    PRODUCT NAME:
    PUSHROD KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $99.95
    Subtotal:
  • FEULING OIL PUMP CORP. Quick Install Pushrods - Twin Cam 4096

    FEULING OIL PUMP CORP. Quick Install Pushrods - Twin Cam 4096

    FEULING OIL PUMP CORP.

    $229.95
    Strength and rigidity of Quick Install pushrods are second only to heavy-duty one-piece pushrods, Tube material starts out as 7/16” rod OD, then gets turned down to 3/8” OD leaving heavy duty 7/16” - 20 threads for the base and jam nut, 0.134” wall...
    09280105
    SKU:
    09280105
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    PRODUCT NAME:
    PUSHROD
    RIDING STYLE:
    STREET
    STYLE:
    ADJUSTABLE
    WALL THICKNESS:
    0,134'
    WALL THICKNESS IMPERIAL:
    0.134'
    UNITS:
    SET OF 4
    $229.95
    Qty in Cart: 0
    Quantity:
    Price:
    $229.95
    Subtotal:
  • FEULING OIL PUMP CORP. Lifters - Race Series - Twin Cam 4050ST FEULING OIL PUMP CORP. Lifters - Race Series - Twin Cam 4050ST

    FEULING OIL PUMP CORP. Lifters - Race Series - Twin Cam 4050ST

    FEULING OIL PUMP CORP.

    $299.95
    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,...
    09280107
    SKU:
    09280107
    Availability:
    Ships Same Business Day
    Weight:
    1.40 LBS
    MODEL:
    RACE SERIES®
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    PRODUCT NAME:
    LIFTER
    TYPE:
    HYDRAULIC
    APPLICATION:
    EXHAUST
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    0.8420' - 0.8423'
    STYLE:
    SHORT-TRAVEL
    UNITS:
    SET OF 4
    $299.95
    Qty in Cart: 0
    Quantity:
    Price:
    $299.95
    Subtotal:
  • FEULING OIL PUMP CORP. Lifters - Race Series - Twin Cam 4051ST

    FEULING OIL PUMP CORP. Lifters - Race Series - Twin Cam 4051ST

    FEULING OIL PUMP CORP.

    $299.95
    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,...
    09280108
    SKU:
    09280108
    Availability:
    Ships Same Business Day
    Weight:
    1.40 LBS
    MATERIAL:
    STEEL
    MODEL:
    RACE SERIES®
    TYPE:
    HYDRAULIC
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    RIDING STYLE:
    STREET
    STYLE:
    SHORT-TRAVEL
    UNITS:
    SET OF 4
    PRODUCT NAME:
    LIFTER
    SIZE IMPERIAL:
    +0.843' - 0.8435'
    $299.95
    Qty in Cart: 0
    Quantity:
    Price:
    $299.95
    Subtotal:
  • FEULING OIL PUMP CORP. Lifters - Race Series - Twin Cam 4052ST

    FEULING OIL PUMP CORP. Lifters - Race Series - Twin Cam 4052ST

    FEULING OIL PUMP CORP.

    $299.95
    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,...
    09280109
    SKU:
    09280109
    Availability:
    Ships Same Business Day
    Weight:
    1.40 LBS
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    LIFTER
    STYLE:
    SHORT-TRAVEL
    UNITS:
    SET OF 4
    MATERIAL:
    STEEL
    SIZE IMPERIAL:
    + 0.8435' - 0.844'
    TYPE:
    HYDRAULIC
    APPLICATION:
    EXHAUST
    MODEL:
    RACE SERIES®
    $299.95
    Qty in Cart: 0
    Quantity:
    Price:
    $299.95
    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
    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.
    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:
  • 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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