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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
  • ANDREWS N Grind Camshaft - Big Twin 212965

    ANDREWS N Grind Camshaft - Big Twin 212965

    ANDREWS

    $256.95
    Stock Knuckle replacement cam, For stock motors and restoring an older classic engine, this is the cam to use, Made in the U.S.A.
    09250584
    SKU:
    09250584
    Availability:
    Ships Same Business Day
    Weight:
    1.55 LBS
    EXHAUST LIFT AT TDC IMPERIAL:
    0.105'
    INTAKE DURATION IMPERIAL:
    234°
    RIDING STYLE:
    STREET
    EXHAUST CLOSE IMPERIAL:
    16°
    GRIND:
    N
    INTAKE CLOSE IMPERIAL:
    44°
    EXHAUST DURATION IMPERIAL:
    240°
    EXHAUST OPEN IMPERIAL:
    47°
    INTAKE LIFT AT TDC IMPERIAL:
    0.089'
    INTAKE LIFT IMPERIAL:
    0.348'
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    EXHAUST LIFT IMPERIAL:
    0.348'
    INTAKE OPEN IMPERIAL:
    13°
    PRODUCT NAME:
    CAM
    $256.95
    Qty in Cart: 0
    Quantity:
    Price:
    $256.95
    Subtotal:
  • ANDREWS Camshaft - S Grind - Big Twin 212970

    ANDREWS Camshaft - S Grind - Big Twin 212970

    ANDREWS

    $265.95
    Made in the U.S.A., This cam is the Knuckle equivalent of a "B" cam in a Pan/Shovel motor, Bolt-in performance cam, Smooth idle, strong pull to 6000 rpm
    09250585
    SKU:
    09250585
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    EXHAUST DURATION IMPERIAL:
    262°
    EXHAUST LIFT IMPERIAL:
    0.370'
    INTAKE CLOSE IMPERIAL:
    55°
    INTAKE DURATION IMPERIAL:
    262°
    RIDING STYLE:
    STREET
    GRIND:
    S
    APPLICATION:
    INTAKE
    EXHAUST CLOSE IMPERIAL:
    27°
    EXHAUST LIFT AT TDC IMPERIAL:
    0.130'
    EXHAUST OPEN IMPERIAL:
    55°
    INTAKE LIFT AT TDC IMPERIAL:
    0.130'
    INTAKE OPEN IMPERIAL:
    27°
    APPLICATION:
    EXHAUST
    INTAKE LIFT IMPERIAL:
    0.370'
    PRODUCT NAME:
    CAM
    UNITS:
    EACH
    $265.95
    Qty in Cart: 0
    Quantity:
    Price:
    $265.95
    Subtotal:
  • ANDREWS Cam Set - Big Twin 214380

    ANDREWS Cam Set - Big Twin 214380

    ANDREWS

    $970.95
    Cam set is similar to original stock cams but the lobes have been redesigned using modern computer cam design and smoothing techniques, Designed for use when rebuilding a motor with pitted cams, .375" valve lift, 1-to-1 rocker ratio and 212 duration @ ...
    09251136
    SKU:
    09251136
    Availability:
    Ships Same Business Day
    Weight:
    5.00 LBS
    PRODUCT NAME:
    CAM
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    INTAKE LIFT IMPERIAL:
    0.3750'
    RIDING STYLE:
    STREET
    TYPE:
    GEAR
    APPLICATION:
    EXHAUST
    EXHAUST LIFT IMPERIAL:
    0.3750'
    $970.95
    Qty in Cart: 0
    Quantity:
    Price:
    $970.95
    Subtotal:
  • ANDREWS Low-Profile Lower Spring Collars - XL 277160

    ANDREWS Low-Profile Lower Spring Collars - XL 277160

    ANDREWS

    $37.95
    Similar to the late H-D collars, Will provide .060" more spring travel than stock collars, Made in the U.S.A.
    DS199727
    SKU:
    DS199727
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    PRODUCT NAME:
    LOWER SPRING COLLAR
    STYLE:
    LOW-PROFILE
    UNITS:
    SET OF 4
    RIDING STYLE:
    STREET
    $37.95
    Qty in Cart: 0
    Quantity:
    Price:
    $37.95
    Subtotal:
  • ANDREWS Grind Cam 212430

    ANDREWS Grind Cam 212430

    ANDREWS

    $251.95
    These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float, Made in the U.S.A.
    DS199298
    SKU:
    DS199298
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    APPLICATION:
    EXHAUST
    EXHAUST CLOSE IMPERIAL:
    24°
    EXHAUST LIFT AT TDC IMPERIAL:
    SHOVEL: 0.156' PAN: 0.164'
    EXHAUST LIFT IMPERIAL:
    SHOVEL: 0.450' PAN: 0.470'
    EXHAUST OPEN IMPERIAL:
    52°
    GRIND:
    BH
    INTAKE OPEN IMPERIAL:
    24°
    PRODUCT NAME:
    CAM
    UNITS:
    EACH
    INTAKE CLOSE IMPERIAL:
    52°
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    EXHAUST DURATION IMPERIAL:
    256°
    INTAKE LIFT AT TDC IMPERIAL:
    SHOVEL: 0.156' PAN: 0.164'
    TYPE:
    GEAR
    INTAKE DURATION IMPERIAL:
    256°
    INTAKE LIFT IMPERIAL:
    SHOVEL: 0.450' PAN: 0.470'
    $251.95
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    Subtotal:
  • ANDREWS EV27 Cam - Evolution 291127

    ANDREWS EV27 Cam - Evolution 291127

    ANDREWS

    $251.95
    These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float, Bolt-in street cam with fast open and close ramps, Uses stock springs; works with carbs or fuel injection, Pulls from 1500 to 6000 rpm, Similar timing to EV3,...
    DS199344
    SKU:
    DS199344
    Availability:
    Ships Same Business Day
    Weight:
    2.08 LBS
    APPLICATION:
    EXHAUST
    EXHAUST LOBE CENTERLINE IMPERIAL:
    106°
    EXHAUST OPEN IMPERIAL:
    46°
    UNITS:
    EACH
    INTAKE CLOSE IMPERIAL:
    36°
    INTAKE LIFT AT TDC IMPERIAL:
    0.182'
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    EXHAUST LIFT IMPERIAL:
    0.495'
    INTAKE DURATION IMPERIAL:
    236°
    INTAKE LIFT IMPERIAL:
    0.495'
    INTAKE LOBE CENTERLINE IMPERIAL:
    98°
    TYPE:
    GEAR
    EXHAUST CLOSE IMPERIAL:
    14°
    EXHAUST DURATION IMPERIAL:
    240°
    EXHAUST LIFT AT TDC IMPERIAL:
    0.166'
    GRIND:
    EV27
    INTAKE OPEN IMPERIAL:
    20°
    PRODUCT NAME:
    CAM
    $251.95
    Qty in Cart: 0
    Quantity:
    Price:
    $251.95
    Subtotal:
  • ALLOY ART Front Engine Mount - Black - FXR NGMP-2 ALLOY ART Front Engine Mount - Black - FXR NGMP-2

    ALLOY ART Front Engine Mount - Black - FXR NGMP-2

    ALLOY ART

    $179.95
    Lighter Than Stock, Stronger Than Stock, CNC Machined Aluminum construction., Made in USA in House in Southern California
    09330138
    SKU:
    09330138
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    BASE FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    STREET
    TYPE:
    ENGINE
    BASE COLOR:
    BLACK
    COLOR/FINISH:
    ANODIZED
    MOUNTING POSITION:
    FRONT
    UNITS:
    EACH
    PRODUCT NAME:
    MOUNT
    $179.95
    Qty in Cart: 0
    Quantity:
    Price:
    $179.95
    Subtotal:
  • ALLOY ART Front Engine Mount - Machined - FXR MGMP-1

    ALLOY ART Front Engine Mount - Machined - FXR MGMP-1

    ALLOY ART

    $169.95
    Lighter Than Stock, Stronger Than Stock, CNC Machined Aluminum construction., Made in USA in House in Southern California
    09330137
    SKU:
    09330137
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    BASE FINISH:
    NATURAL
    PRODUCT NAME:
    MOUNT
    COLOR/FINISH:
    NATURAL
    MOUNTING POSITION:
    FRONT
    TYPE:
    ENGINE
    UNITS:
    EACH
    RIDING STYLE:
    STREET
    $169.95
    Qty in Cart: 0
    Quantity:
    Price:
    $169.95
    Subtotal:
  • DRAG SPECIALTIES Oil Pump Cover - 80" 302045-BC3

    DRAG SPECIALTIES Oil Pump Cover - 80" 302045-BC3

    DRAG SPECIALTIES

    $41.15
    Neatly covers the side and top of the oil pump, Attaches easily using two existing oil pump body mounting points, Includes chrome hardware
    DS376504
    SKU:
    DS376504
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    BASE FINISH:
    CHROME
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    CHROME
    PRODUCT NAME:
    COVER
    TYPE:
    OIL PUMP
    UNITS:
    EACH
    $41.15
    Qty in Cart: 0
    Quantity:
    Price:
    $41.15
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft Installation Kit - Twin Cam 2071

    FEULING OIL PUMP CORP. Camshaft Installation Kit - Twin Cam 2071

    FEULING OIL PUMP CORP.

    $129.95
    Each kit includes cam plate roller bearings, Koyo Torrington® full roller inner needle bearings, 12-point ARP® camshaft and crankshaft bolts, ARP® fastener moly paste and Loctite® compound and hardened washers, Gaskets include copper exhaust gaskets, cam...
    09250537
    SKU:
    09250537
    Availability:
    Ships Same Business Day
    Weight:
    0.81 LBS
    UNITS:
    KIT
    MODEL:
    PLUS
    PRODUCT NAME:
    INSTALLATION KIT
    RIDING STYLE:
    STREET
    TYPE:
    CAMSHAFT
    TYPE:
    CHAIN
    $129.95
    Qty in Cart: 0
    Quantity:
    Price:
    $129.95
    Subtotal:
  • FEULING OIL PUMP CORP. Camshaft Installation Kit - Chain Conversion 2063

    FEULING OIL PUMP CORP. Camshaft Installation Kit - Chain Conversion 2063

    FEULING OIL PUMP CORP.

    $92.95
    Each kit includes cam plate roller bearings, Koyo Torrington® full roller inner needle bearings, 12-point ARP® camshaft and crankshaft bolts, ARP® fastener moly paste and Loctite® compound and hardened washers, Gaskets include copper exhaust gaskets, cam...
    09250627
    SKU:
    09250627
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    UNITS:
    KIT
    MODEL:
    STANDARD
    PRODUCT NAME:
    INSTALLATION KIT
    RIDING STYLE:
    STREET
    TYPE:
    CHAIN CONVERSION
    $92.95
    Qty in Cart: 0
    Quantity:
    Price:
    $92.95
    Subtotal:
  • FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 574 Series 1007

    FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 574 Series 1007

    FEULING OIL PUMP CORP.

    $399.95
    Power band for modified engines and an excellent bolt-in for stock 96", 103" and 110" engines, Responds well to modified cylinder heads increased compression ratio, performance exhaust and intake systems, Extremely smooth cam-lobe design creates a smooth...
    09250428
    SKU:
    09250428
    Availability:
    Ships Same Business Day
    Weight:
    2.80 LBS
    APPLICATION:
    INTAKE
    EXHAUST DURATION IMPERIAL:
    255°
    INTAKE OPEN IMPERIAL:
    15°
    TYPE:
    GEAR
    EXHAUST LIFT IMPERIAL:
    0.574'
    INTAKE DURATION IMPERIAL:
    240°
    INTAKE LIFT IMPERIAL:
    0.574'
    RIDING STYLE:
    STREET
    UNITS:
    PAIR
    APPLICATION:
    EXHAUST
    INTAKE CLOSE IMPERIAL:
    45°
    PRODUCT NAME:
    CAMSHAFT
    EXHAUST CLOSE IMPERIAL:
    14°
    EXHAUST OPEN IMPERIAL:
    61°
    GRIND:
    574 SERIES
    MODEL:
    REAPER
    $399.95
    Qty in Cart: 0
    Quantity:
    Price:
    $399.95
    Subtotal:
  • FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 574 Series 1008

    FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 574 Series 1008

    FEULING OIL PUMP CORP.

    $399.95
    Power band for modified engines and an excellent bolt-in for stock 96", 103" and 110" engines, Responds well to modified cylinder heads increased compression ratio, performance exhaust and intake systems, Extremely smooth cam-lobe design creates a smooth...
    09250429
    SKU:
    09250429
    Availability:
    Ships Same Business Day
    Weight:
    3.06 LBS
    EXHAUST DURATION IMPERIAL:
    255°
    PRODUCT NAME:
    CAMSHAFT
    APPLICATION:
    EXHAUST
    INTAKE CLOSE IMPERIAL:
    45°
    INTAKE OPEN IMPERIAL:
    15°
    APPLICATION:
    INTAKE
    EXHAUST LIFT IMPERIAL:
    0.574'
    INTAKE DURATION IMPERIAL:
    240°
    INTAKE LIFT IMPERIAL:
    0.574'
    RIDING STYLE:
    STREET
    TYPE:
    GEAR
    UNITS:
    PAIR
    EXHAUST CLOSE IMPERIAL:
    14°
    EXHAUST OPEN IMPERIAL:
    61°
    GRIND:
    574 SERIES
    MODEL:
    REAPER
    $399.95
    Qty in Cart: 0
    Quantity:
    Price:
    $399.95
    Subtotal:
  • FEULING OIL PUMP CORP. Chain Drive Reaper Cam - 574 Series 1009

    FEULING OIL PUMP CORP. Chain Drive Reaper Cam - 574 Series 1009

    FEULING OIL PUMP CORP.

    $399.95
    Power band for modified engines and an excellent bolt-in for stock 96", 103" and 110" engines, Responds well to modified cylinder heads increased compression ratio, performance exhaust and intake systems, Extremely smooth cam-lobe design creates a smooth...
    09250430
    SKU:
    09250430
    Availability:
    Ships Same Business Day
    Weight:
    3.20 LBS
    APPLICATION:
    INTAKE
    EXHAUST DURATION IMPERIAL:
    255°
    APPLICATION:
    EXHAUST
    INTAKE CLOSE IMPERIAL:
    45°
    INTAKE OPEN IMPERIAL:
    15°
    PRODUCT NAME:
    CAMSHAFT
    TYPE:
    CHAIN
    EXHAUST LIFT IMPERIAL:
    0.574'
    INTAKE DURATION IMPERIAL:
    240°
    INTAKE LIFT IMPERIAL:
    0.574'
    RIDING STYLE:
    STREET
    UNITS:
    PAIR
    EXHAUST CLOSE IMPERIAL:
    14°
    EXHAUST OPEN IMPERIAL:
    61°
    GRIND:
    574 SERIES
    MODEL:
    REAPER
    $399.95
    Qty in Cart: 0
    Quantity:
    Price:
    $399.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Seals 1077

    FEULING OIL PUMP CORP. Valve Seals 1077

    FEULING OIL PUMP CORP.

    $15.95
    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.
    09261168
    SKU:
    09261168
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    SEAL
    SIZE IMPERIAL:
    0.530'
    APPLICATION:
    EXHAUST
    TYPE:
    VALVE
    MATERIAL:
    VITON
    RIDING STYLE:
    STREET
    UNITS:
    4 PACK
    $15.95
    Qty in Cart: 0
    Quantity:
    Price:
    $15.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Seals 1078 FEULING OIL PUMP CORP. Valve Seals 1078

    FEULING OIL PUMP CORP. Valve Seals 1078

    FEULING OIL PUMP CORP.

    $15.95
    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.
    09261169
    SKU:
    09261169
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    APPLICATION:
    INTAKE
    SIZE IMPERIAL:
    0.500'
    APPLICATION:
    EXHAUST
    TYPE:
    VALVE
    RIDING STYLE:
    STREET
    MATERIAL:
    VITON
    PRODUCT NAME:
    SEAL
    UNITS:
    4 PACK
    $15.95
    Qty in Cart: 0
    Quantity:
    Price:
    $15.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Locks 1206

    FEULING OIL PUMP CORP. Valve Locks 1206

    FEULING OIL PUMP CORP.

    $29.95
    Offset locks raise retainer to gain .050" installed height, Titanium locks are offset 10 degrees, Made in the U.S.A.
    09261170
    SKU:
    09261170
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    PRODUCT NAME:
    LOCK
    APPLICATION:
    EXHAUST
    TYPE:
    VALVE
    UNITS:
    SET OF 8
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    STEM DIAMETER IMPERIAL:
    0.3125'
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Locks 1213

    FEULING OIL PUMP CORP. Valve Locks 1213

    FEULING OIL PUMP CORP.

    $29.95
    Offset locks raise retainer to gain .050" installed height, Titanium locks are offset 10 degrees, Made in the U.S.A.
    09261171
    SKU:
    09261171
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    PRODUCT NAME:
    LOCK
    RIDING STYLE:
    STREET
    APPLICATION:
    EXHAUST
    STEM DIAMETER METRIC:
    7.00 MM
    TYPE:
    VALVE
    UNITS:
    SET OF 8
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Springs - Econo Beehive - Twin Cam 1121

    FEULING OIL PUMP CORP. Valve Springs - Econo Beehive - Twin Cam 1121

    FEULING OIL PUMP CORP.

    $229.95
    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...
    09261468
    SKU:
    09261468
    Availability:
    Ships Same Business Day
    Weight:
    1.65 LBS
    STYLE:
    OVATE WIRE BEEHIVE
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    STEM DIAMETER IMPERIAL:
    0.3125'
    MATERIAL:
    STEEL
    APPLICATION:
    EXHAUST
    MODEL:
    ECONO BEEHIVE
    PRODUCT NAME:
    SPRING KIT
    SPRING LIFT:
    0,585'
    SPRING LIFT IMPERIAL:
    0.585'
    TYPE:
    VALVE
    $229.95
    Qty in Cart: 0
    Quantity:
    Price:
    $229.95
    Subtotal:
  • FEULING OIL PUMP CORP. Valve Springs - High-Load 1201

    FEULING OIL PUMP CORP. Valve Springs - High-Load 1201

    FEULING OIL PUMP CORP.

    $379.95
    Made in the U.S.A.
    09261469
    SKU:
    09261469
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    MODEL:
    HIGH-LOAD BEEHIVE
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    MATERIAL:
    STEEL
    SPRING LIFT IMPERIAL:
    0.750'
    APPLICATION:
    INTAKE
    COLLAR MATERIAL:
    TITANIUM
    SPRING LIFT:
    0,750'
    STEM DIAMETER IMPERIAL:
    0.3125'
    APPLICATION:
    EXHAUST
    PRODUCT NAME:
    SPRING KIT
    TYPE:
    VALVE
    $379.95
    Qty in Cart: 0
    Quantity:
    Price:
    $379.95
    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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