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
- DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 140003HP-BX18 – Captures metal particles with pressure relief.
- WISECO Piston Kit .010 .883 XL K1656 – Forged aluminum with rings, pins, and circlips for rebuilds.
- DRAG SPECIALTIES Pushrod Tube Kit Big Twin 75711 – Includes tubes, clips, cups, and springs for complete engine.
- ULTRACOOL Below Regulator Mount Oil Cooler Stainless Steel RF-2CSS – Fits S&S 111/124/143 engines with machined adapter.
- PAUGHCO Ribbed Teardrop Air Cleaner 701-200 – Chrome-plated aluminum with mini filter.
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
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THRASHIN SUPPLY CO. Point Cover - Polished - M8 TSC-3027-2
THRASHIN SUPPLY CO.
$59.95A clean, professional engine bay starts with quality details—and your ignition system deserves better than a worn-out cover. The THRASHIN SUPPLY CO. Point Cover combines hand-polished aesthetics with aircraft-grade durability, giving you a component that...09401847- SKU:
- 09401847
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- POLISHED
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- STYLE:
- DISHED
- TYPE:
- POINT
$59.95 -
THRASHIN SUPPLY CO. Point Cover - Black - M8 TSC-3027-4
THRASHIN SUPPLY CO.
$59.95A quality point cover protects your M8's ignition system from road debris, moisture, and contamination while maintaining the clean aesthetic your bike deserves. This THRASHIN SUPPLY CO. cover delivers genuine durability through aircraft-grade...09401846- SKU:
- 09401846
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- TYPE:
- POINT
- RIDING STYLE:
- STREET
- STYLE:
- DISHED
$59.95 -
KIBBLEWHITE Valve Seat 10-HC542
KIBBLEWHITE
$14.47High-performance titanium valves demand a seat material engineered to match their demands—standard iron seats simply can't handle the thermal stress and wear cycles. The KIBBLEWHITE 10-HC542 copper-based seat delivers the thermal conductivity and...09263366- SKU:
- 09263366
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- INSIDE DIAMETER IMPERIAL:
- 1.750'
- OUTSIDE DIAMETER IMPERIAL:
- 2.135'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE SEAT
$14.47Qty in Cart: 0Quantity:Price:$14.47Subtotal: -
KIBBLEWHITE Valve Seat 10-HC549
KIBBLEWHITE
$14.47If you're running titanium valves in a high-performance engine, valve seat material matters as much as the valves themselves. The KIBBLEWHITE 10-HC549 is a copper-based seat engineered specifically to handle the thermal stress and aggressive duty cycles...09263367- SKU:
- 09263367
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- OUTSIDE DIAMETER IMPERIAL:
- 2.068'
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE SEAT
- INSIDE DIAMETER IMPERIAL:
- 1.750'
- UNITS:
- EACH
$14.47 -
KIBBLEWHITE Valve Spring Kit 20-20450
KIBBLEWHITE
$142.97Valve spring degradation is one of the most insidious threats to engine reliability—worn springs cause valve float, inconsistent lift, and catastrophic power loss that sneaks up on you between rebuilds. The KIBBLEWHITE Valve Spring Kit 20-20450 restores...09262926- SKU:
- 09262926
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- SPRING OPEN PRESSURE:
- 385 LB
- UNITS:
- KIT
- MATERIAL:
- STEEL
- SPRING SEAT PRESSURE:
- 150 LB
- TYPE:
- VALVE
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING
- APPLICATION:
- INTAKE
- COLLAR MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
- SPRING LIFT IMPERIAL:
- 0.600'
$142.97 -
KIBBLEWHITE Valve Spring Kit 20-20850
KIBBLEWHITE
$129.79Valve spring degradation is one of the most common culprits behind performance loss and engine reliability issues—whether you're running a stock rebuild or a modified setup. The KIBBLEWHITE Valve Spring Kit 20-20850 delivers OE-specification replacement...09262927- SKU:
- 09262927
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- RIDING STYLE:
- STREET
- SPRING SEAT PRESSURE:
- 129 LB
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING
- SPRING LIFT IMPERIAL:
- 0.415'
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- TYPE:
- VALVE
- UNITS:
- KIT
- COLLAR MATERIAL:
- STEEL
- SPRING OPEN PRESSURE:
- 272 LB
$129.79 -
KIBBLEWHITE Valve Collar - Big Twin 20-20855
KIBBLEWHITE
$34.80Proper valve collar geometry is critical for maintaining valve seal integrity and preventing catastrophic engine failure in high-revving Big Twin applications. The KIBBLEWHITE Valve Collar features a counter-bored lower design that maximizes...09262928- SKU:
- 09262928
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- COLLAR MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
- SPRING SEAT PRESSURE:
- 129 LB
- UNITS:
- 4 PACK
- PRODUCT NAME:
- COLLAR
- SPRING OPEN PRESSURE:
- 272 LB
- TYPE:
- VALVE SPRING
- SPRING LIFT:
- 0,415'
- SPRING LIFT IMPERIAL:
- 0.415'
$34.80 -
KIBBLEWHITE Valve Spring Kit 20-21100
KIBBLEWHITE
$147.66Valve springs are critical to engine reliability—worn or inadequate springs lead to valve float, loss of compression, and catastrophic engine damage at high RPMs. The KIBBLEWHITE 20-21100 kit restores OE performance specifications with superior materials...09262929- SKU:
- 09262929
- Availability:
- Ships Same Business Day
- Weight:
- 1.41 LBS
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- STREET
- COLLAR MATERIAL:
- ALUMINUM
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPRING
- SPRING OPEN PRESSURE:
- 387 LB
- SPRING SEAT PRESSURE:
- 152 LB
- TYPE:
- VALVE
- SPRING LIFT IMPERIAL:
- 0.600'
- UNITS:
- KIT
- APPLICATION:
- INTAKE
$147.66 -
KIBBLEWHITE Valve Spring Kit 20-21150
KIBBLEWHITE
$142.97Maintaining factory-correct valve spring performance is critical for reliability and longevity in high-RPM applications. Kibblewhite's OE-style replacement kit restores proper valve control without requiring custom tuning or machine work, making it an...09262930- SKU:
- 09262930
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- APPLICATION:
- INTAKE
- UNITS:
- KIT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPRING
- TYPE:
- VALVE
- COLLAR MATERIAL:
- STEEL
- SPRING OPEN PRESSURE:
- 387 LB
- SPRING SEAT PRESSURE:
- 152 LB
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- STREET
- SPRING LIFT IMPERIAL:
- 0.600'
$142.97 -
KIBBLEWHITE Intake Valve 20-21009H
KIBBLEWHITE
$32.78If you're building or rebuilding an engine that demands reliability and longevity, valve wear is one of the first places poor quality shows up. KIBBLEWHITE's intake valves use a proprietary nitriding process that delivers superior wear resistance and...09262952- SKU:
- 09262952
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- STEM DIAMETER IMPERIAL:
- 0.2347'
- LENGTH IMPERIAL:
- 4.055'
- APPLICATION:
- INTAKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- HEAD DIAMETER IMPERIAL:
- 1.630'
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- TULIP ANGLE:
- 10°
$32.78 -
KIBBLEWHITE Intake Valve 20-21019
KIBBLEWHITE
$54.10If you're building or rebuilding a high-revving engine, valve durability directly impacts your power output and longevity. KIBBLEWHITE's stainless-steel intake valves combine precision engineering with a proprietary nitriding process that significantly...09262954- SKU:
- 09262954
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- LENGTH IMPERIAL:
- 5.200'
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 10°
- APPLICATION:
- INTAKE
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- HEAD DIAMETER IMPERIAL:
- 1.732'
- STEM DIAMETER IMPERIAL:
- 0.2342'
$54.10 -
KIBBLEWHITE Intake Valve Guide 20-21020
KIBBLEWHITE
$26.89Worn or damaged valve guides compromise cylinder head integrity and flow efficiency, directly impacting combustion quality and engine performance. The KIBBLEWHITE 20-21020 is precision-engineered to restore OEM specifications while accommodating modern...09262955- SKU:
- 09262955
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BASE COLOR:
- BROWN
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- COLOR/FINISH:
- BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.2347'
- MATERIAL:
- C630 BRONZE
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- STANDARD
- OUTSIDE DIAMETER IMPERIAL:
- 0.4750'
$26.89 -
KIBBLEWHITE Valve Kit - Evolution/1200 20-22800
KIBBLEWHITE
$117.85Valve wear is one of the fastest paths to engine degradation, especially in high-demand Evolution and 1200cc applications. The KIBBLEWHITE Black Diamond™ valve kit delivers precision-engineered stainless steel valves with a proprietary impregnation...09263213- SKU:
- 09263213
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE KIT
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$117.85 -
KIBBLEWHITE Complete Valve Kit - Evolution/1200 20-22850
KIBBLEWHITE
$251.29A complete valve kit is essential for any Evolution or 1200cc engine rebuild—it ensures you're not mixing worn, mismatched components that compromise compression and reliability. KIBBLEWHITE's Black Diamond™ stainless steel valves are engineered with...09263214- SKU:
- 09263214
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- SPRING SEAT PRESSURE:
- 163 LB
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- ENGINE KIT
- SPRING OPEN PRESSURE:
- 361 LB
- RIDING STYLE:
- STREET
- SPRING LIFT:
- 0,600'
- MODEL:
- BLACK DIAMOND™
- SPRING LIFT IMPERIAL:
- 0.600'
$251.29 -
KIBBLEWHITE Valve Kit - Evolution/1200 20-22900
KIBBLEWHITE
$205.56Valve reliability is non-negotiable in high-performance engines, and the KIBBLEWHITE Valve Kit delivers the durability and precision your Evolution or 1200cc engine demands. The Black Diamond™ stainless steel construction combined with a proprietary...09263215- SKU:
- 09263215
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- VALVE KIT
- UNITS:
- KIT
$205.56Qty in Cart: 0Quantity:Price:$205.56Subtotal: -
KIBBLEWHITE Complete Valve Kit - Evolution/1200 20-22950
KIBBLEWHITE
$315.46A complete valve refresh is essential for maintaining peak combustion efficiency and engine longevity, especially in Evolution and 1200cc engines that demand precision tolerances. This KIBBLEWHITE kit eliminates the guesswork by delivering matched,...09263216- SKU:
- 09263216
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- SPRING SEAT PRESSURE:
- 175 LB
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- ENGINE KIT
- SPRING LIFT IMPERIAL:
- 0.610'
- SPRING LIFT:
- 0,610'
- SPRING OPEN PRESSURE:
- 400 LB
- UNITS:
- KIT
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
$315.46 -
KIBBLEWHITE Valve Kit - Twin Cam 20-23000
KIBBLEWHITE
$113.28Factory valve wear accelerates drastically under high RPM and sustained heat cycles, compromising compression and throttle response. The KIBBLEWHITE Valve Kit delivers Black Diamond™ stainless steel construction with a proprietary impregnation process...09263217- SKU:
- 09263217
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE KIT
$113.28 -
KIBBLEWHITE Complete Valve Kit - Twin Cam 20-23050
KIBBLEWHITE
$246.98A complete valve kit is essential for any Twin Cam engine rebuild or high-mileage restoration—it ensures proper sealing, combustion efficiency, and longevity across all cylinders. The KIBBLEWHITE Complete Valve Kit delivers OEM-quality components with...09263218- SKU:
- 09263218
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- MODEL:
- BLACK DIAMOND™
- SPRING SEAT PRESSURE:
- 163 LB
- MATERIAL:
- STAINLESS STEEL
- SPRING LIFT:
- 0,600'
- PRODUCT NAME:
- ENGINE KIT
- SPRING LIFT IMPERIAL:
- 0.600'
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- SPRING OPEN PRESSURE:
- 361 LB
$246.98Qty in Cart: 0Quantity:Price:$246.98Subtotal: -
KIBBLEWHITE BUSHINGS ROCKER ARM 20-2106
KIBBLEWHITE
$33.85Rocker arm bushings are a critical wear point in any high-revving engine—inadequate bushing material leads to excessive clearance, valve timing drift, and accelerated component degradation. Kibblewhite's SAE660 bearing bronze bushings eliminate these...09270024- SKU:
- 09270024
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- 8 PACK
- MATERIAL:
- C932 BRONZE
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER ARM
$33.85 -
KIBBLEWHITE Intake Valve 20-21060H
KIBBLEWHITE
$32.78Intake valve performance directly impacts your engine's breathing efficiency and combustion reliability—especially under high RPM conditions where precision matters most. Kibblewhite's White Diamond™ valves are engineered from premium EV8 stainless steel...09263343- SKU:
- 09263343
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- STAINLESS STEEL
- SIZE METRIC:
- OVERSIZE (+1.00 MM)
- UNITS:
- EACH
- HEAD DIAMETER IMPERIAL:
- 1.614'
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2347'
- LENGTH IMPERIAL:
- 4.035'
- MODEL:
- WHITE DIAMOND™
- TULIP ANGLE:
- 15°
- APPLICATION:
- INTAKE
- RIDING STYLE:
- STREET
$32.78
