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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
  • KIBBLEWHITE Valve Guide 20-20692M

    KIBBLEWHITE Valve Guide 20-20692M

    KIBBLEWHITE

    $15.10
    Valve guide wear compromises engine sealing, increases oil consumption, and accelerates valve damage—requiring costly head work. The KIBBLEWHITE Manganese Bronze Valve Guide 20-20692M delivers...
    09262294
    SKU:
    09262294
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.002')
    MATERIAL:
    BRONZE
    APPLICATION:
    INTAKE
    INSIDE DIAMETER IMPERIAL:
    0.2750'
    OUTSIDE DIAMETER IMPERIAL:
    0.5640'
    UNITS:
    EACH
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-20700M

    KIBBLEWHITE Valve Guide 20-20700M

    KIBBLEWHITE

    $15.10
    If you're rebuilding a high-performance engine, valve guide quality directly impacts longevity and reliability. Kibblewhite's manganese bronze guides offer superior heat conductivity to keep your...
    09262296
    SKU:
    09262296
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MATERIAL:
    BRONZE
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    APPLICATION:
    EXHAUST
    INSIDE DIAMETER IMPERIAL:
    0.2750'
    OUTSIDE DIAMETER IMPERIAL:
    0.5620'
    SIZE IMPERIAL:
    STANDARD
    UNITS:
    EACH
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-20701M

    KIBBLEWHITE Valve Guide 20-20701M

    KIBBLEWHITE

    $15.10
    If you're rebuilding a high-revving engine, valve guide wear directly impacts compression, combustion efficiency, and longevity. The KIBBLEWHITE 20-20701M guides combine manganese bronze's superior...
    09262297
    SKU:
    09262297
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5630'
    SIZE IMPERIAL:
    OVERSIZE (+0.001')
    APPLICATION:
    EXHAUST
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.2750'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-20702M

    KIBBLEWHITE Valve Guide 20-20702M

    KIBBLEWHITE

    $15.10
    If you're rebuilding a cylinder head and want to avoid the expense and hassle of specialized honing equipment, Kibblewhite valve guides offer a practical solution without compromising performance...
    09262298
    SKU:
    09262298
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5640'
    INSIDE DIAMETER IMPERIAL:
    0.2750'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.002')
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-20HSM

    KIBBLEWHITE Valve Guide 20-20HSM

    KIBBLEWHITE

    $15.10
    If you're rebuilding a high-performance engine, valve guide wear directly impacts combustion efficiency, oil consumption, and overall reliability. The KIBBLEWHITE 20-20HSM guides deliver precision...
    09262300
    SKU:
    09262300
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    APPLICATION:
    INTAKE
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.025')
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5900'
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2120M

    KIBBLEWHITE Valve Guide 20-2120M

    KIBBLEWHITE

    $15.10
    If you're rebuilding cylinder heads without access to expensive honing equipment, Kibblewhite's manganese bronze valve guides deliver precision and durability at a fraction of the cost. The softer...
    09262301
    SKU:
    09262301
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    OUTSIDE DIAMETER IMPERIAL:
    0.5620'
    SIZE IMPERIAL:
    STANDARD
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    INSIDE DIAMETER IMPERIAL:
    0.3098'
    MATERIAL:
    BRONZE
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2121M

    KIBBLEWHITE Valve Guide 20-2121M

    KIBBLEWHITE

    $15.10
    If you're rebuilding a cylinder head, valve guide quality directly impacts valve sealing, engine longevity, and thermal management. KIBBLEWHITE's manganese bronze guides deliver superior heat...
    09262302
    SKU:
    09262302
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.3098'
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5630'
    SIZE IMPERIAL:
    OVERSIZE (+0.001')
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2122M

    KIBBLEWHITE Valve Guide 20-2122M

    KIBBLEWHITE

    $15.10
    If you're rebuilding a cylinder head and want to avoid the cost and complexity of specialized honing equipment, KIBBLEWHITE valve guides deliver precision engineering without the premium price tag...
    09262303
    SKU:
    09262303
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    APPLICATION:
    INTAKE
    OUTSIDE DIAMETER IMPERIAL:
    0.5640'
    MATERIAL:
    BRONZE
    SIZE IMPERIAL:
    OVERSIZE (+0.002')
    INSIDE DIAMETER IMPERIAL:
    0.3098'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2124M

    KIBBLEWHITE Valve Guide 20-2124M

    KIBBLEWHITE

    $15.10
    If you're rebuilding a high-performance engine, valve guide quality directly impacts reliability and longevity under sustained heat and pressure. Kibblewhite's manganese bronze construction offers...
    09262305
    SKU:
    09262305
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    APPLICATION:
    INTAKE
    SIZE IMPERIAL:
    OVERSIZE (+0.004')
    MATERIAL:
    BRONZE
    INSIDE DIAMETER IMPERIAL:
    0.3098'
    OUTSIDE DIAMETER IMPERIAL:
    0.5660'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2129M

    KIBBLEWHITE Valve Guide 20-2129M

    KIBBLEWHITE

    $15.10
    Valve guide wear is one of the quickest ways to lose compression and valve seat integrity in a high-revving engine. The KIBBLEWHITE 20-2129M manganese bronze guides deliver superior heat conductivity...
    09262306
    SKU:
    09262306
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    APPLICATION:
    INTAKE
    INSIDE DIAMETER IMPERIAL:
    0.3098'
    UNITS:
    EACH
    OUTSIDE DIAMETER IMPERIAL:
    0.5720'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.010')
    MATERIAL:
    BRONZE
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2130M

    KIBBLEWHITE Valve Guide 20-2130M

    KIBBLEWHITE

    $15.10
    If you're rebuilding a classic or high-performance engine, valve guide quality directly impacts ring sealing, combustion efficiency, and overall engine longevity. KIBBLEWHITE's manganese bronze...
    09262307
    SKU:
    09262307
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    INSIDE DIAMETER IMPERIAL:
    0.3098'
    MATERIAL:
    BRONZE
    APPLICATION:
    EXHAUST
    OUTSIDE DIAMETER IMPERIAL:
    0.5620'
    UNITS:
    EACH
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    STANDARD
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2131M

    KIBBLEWHITE Valve Guide 20-2131M

    KIBBLEWHITE

    $15.10
    If you're rebuilding a cylinder head, valve guides are critical to maintaining proper valve sealing and preventing oil consumption. The KIBBLEWHITE 20-2131M manganese bronze guides deliver superior...
    09262308
    SKU:
    09262308
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    INSIDE DIAMETER IMPERIAL:
    0.3098'
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5630'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    APPLICATION:
    EXHAUST
    UNITS:
    EACH
    SIZE IMPERIAL:
    OVERSIZE (+0.001')
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2134M

    KIBBLEWHITE Valve Guide 20-2134M

    KIBBLEWHITE

    $15.10
    If you're rebuilding or porting cylinder heads, valve guides directly impact durability and thermal management—and the KIBBLEWHITE 20-2134M delivers both without the hassle of expensive equipment...
    09262311
    SKU:
    09262311
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MATERIAL:
    BRONZE
    SIZE IMPERIAL:
    OVERSIZE (+0.004')
    INSIDE DIAMETER IMPERIAL:
    0.3098'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    OUTSIDE DIAMETER IMPERIAL:
    0.5660'
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-30HSM

    KIBBLEWHITE Valve Guide 20-30HSM

    KIBBLEWHITE

    $15.10
    If you're rebuilding a high-revving engine or restoring a classic with modern reliability in mind, valve guides are critical to long-term durability and consistent performance. The KIBBLEWHITE...
    09262313
    SKU:
    09262313
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.025')
    APPLICATION:
    EXHAUST
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5900'
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    UNITS:
    EACH
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-60HSM

    KIBBLEWHITE Valve Guide 20-60HSM

    KIBBLEWHITE

    $15.10
    If you're rebuilding a high-revving engine, valve guides are critical to longevity and performance—worn guides increase oil consumption, destroy valve seals, and compromise combustion efficiency...
    09262315
    SKU:
    09262315
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.025')
    MATERIAL:
    BRONZE
    APPLICATION:
    EXHAUST
    OUTSIDE DIAMETER IMPERIAL:
    0.6500'
    INSIDE DIAMETER IMPERIAL:
    0.3735'
    UNITS:
    EACH
    $15.10
    Qty in Cart: 0
    Quantity:
    Price:
    $15.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2320 KIBBLEWHITE Valve Guide 20-2320

    KIBBLEWHITE Valve Guide 20-2320

    KIBBLEWHITE

    $34.40
    If you're building or rebuilding a high-performance engine, valve guide selection directly impacts flow efficiency, longevity, and fuel compatibility. The KIBBLEWHITE 20-2320 is precision-machined...
    09260696
    SKU:
    09260696
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    INSIDE DIAMETER IMPERIAL:
    0.3085'
    APPLICATION:
    INTAKE
    COLOR/FINISH:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5650'
    PRODUCT NAME:
    VALVE GUIDE
    UNITS:
    EACH
    MATERIAL:
    C630 BRONZE
    BASE COLOR:
    BROWN
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    STANDARD
    $34.40
    Qty in Cart: 0
    Quantity:
    Price:
    $34.40
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2330

    KIBBLEWHITE Valve Guide 20-2330

    KIBBLEWHITE

    $34.40
    Precision valve guides are critical to maintaining proper valve sealing, reducing wear on your cylinder head, and maximizing flow efficiency in high-performance engines. The KIBBLEWHITE 20-2330 is...
    09260697
    SKU:
    09260697
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    COLOR/FINISH:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5650'
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    BASE COLOR:
    BROWN
    PRODUCT NAME:
    VALVE GUIDE
    INSIDE DIAMETER IMPERIAL:
    0.3375'
    MATERIAL:
    C630 BRONZE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    STANDARD
    $34.40
    Qty in Cart: 0
    Quantity:
    Price:
    $34.40
    Subtotal:
  • KIBBLEWHITE Cast Iron Valve Guide - XL 20-2320C

    KIBBLEWHITE Cast Iron Valve Guide - XL 20-2320C

    KIBBLEWHITE

    $9.84
    Valve guides are critical to maintaining proper valve alignment and sealing—compromised guides lead to excessive oil consumption, blow-by, and loss of compression. The KIBBLEWHITE Cast Iron Valve...
    09260698
    SKU:
    09260698
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    OUTSIDE DIAMETER IMPERIAL:
    0.5650'
    APPLICATION:
    INTAKE
    INSIDE DIAMETER IMPERIAL:
    0.3085'
    PRODUCT NAME:
    VALVE GUIDE
    UNITS:
    EACH
    MATERIAL:
    CAST IRON
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    STANDARD
    $9.84
    Qty in Cart: 0
    Quantity:
    Price:
    $9.84
    Subtotal:
  • KIBBLEWHITE Cast Iron Valve Guide - XL 20-2330C

    KIBBLEWHITE Cast Iron Valve Guide - XL 20-2330C

    KIBBLEWHITE

    $9.84
    Valve guides are critical to maintaining proper valve alignment and controlling oil consumption in high-performance engines. The KIBBLEWHITE Cast Iron Valve Guide delivers precision engineering and...
    09260699
    SKU:
    09260699
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    INSIDE DIAMETER IMPERIAL:
    0.3375'
    MATERIAL:
    CAST IRON
    PRODUCT NAME:
    VALVE GUIDE
    APPLICATION:
    EXHAUST
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    STANDARD
    OUTSIDE DIAMETER IMPERIAL:
    0.5650'
    UNITS:
    EACH
    $9.84
    Qty in Cart: 0
    Quantity:
    Price:
    $9.84
    Subtotal:
  • KIBBLEWHITE Valve Guide 20-2321

    KIBBLEWHITE Valve Guide 20-2321

    KIBBLEWHITE

    $34.40
    If you're running a high-performance engine that demands precision valve control and reliable durability, the KIBBLEWHITE Valve Guide 20-2321 delivers the bore concentricity and flow optimization...
    09260700
    SKU:
    09260700
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    BASE COLOR:
    BROWN
    OUTSIDE DIAMETER IMPERIAL:
    0.5660'
    UNITS:
    EACH
    MATERIAL:
    C630 BRONZE
    APPLICATION:
    INTAKE
    COLOR/FINISH:
    BRONZE
    RIDING STYLE:
    STREET
    INSIDE DIAMETER IMPERIAL:
    0.3085'
    PRODUCT NAME:
    VALVE GUIDE
    SIZE IMPERIAL:
    OVERSIZE (+0.001')
    Qty in Cart: 0
    Quantity:
    Price:
    $34.40
    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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