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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JAMES GASKET Fork Seal Kit - 49 mm 45849-01-VR
JAMES GASKET
$35.95Leaking fork seals compromise your suspension performance and can lead to costly damage to your fork internals. This JAMES GASKET Fork Seal Kit gives you everything needed for a complete seal replacement, restoring your suspension's damping...09350253- SKU:
- 09350253
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
$35.95 -
FEULING OIL PUMP CORP. Race Series Camshaft Kit 7210P
FEULING OIL PUMP CORP.
$1,879.95If you're serious about maximizing your engine's performance potential, the FEULING OIL PUMP CORP. Race Series Camshaft Kit 7210P is engineered to deliver the aggressive valve timing and lift you need for competition-level power. This is a direct bolt-on...09251381- SKU:
- 09251381
- Availability:
- Ships Same Business Day
- Weight:
- 11.26 LBS
- PRODUCT NAME:
- CAMSHAFT KIT
- UNITS:
- KIT
- MODEL:
- RACE SERIES®
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- GRIND:
- 630 SERIES
$1,879.95 -
FEULING OIL PUMP CORP. Race Series Camshaft Kit 7270
FEULING OIL PUMP CORP.
$2,049.95The FEULING OIL PUMP CORP. Race Series Camshaft Kit 7270 delivers the valve timing precision and lift characteristics that separates competitive racers from the pack. Purpose-built for high-RPM engine builds, this camshaft kit maximizes power output...09251417- SKU:
- 09251417
- Availability:
- Ships Same Business Day
- Weight:
- 11.40 LBS
- RIDING STYLE:
- STREET
- GRIND:
- 538 SERIES
- PRODUCT NAME:
- CAMSHAFT KIT
- TYPE:
- CHAIN
- UNITS:
- KIT
- MODEL:
- RACE SERIES®
$2,049.95 -
FEULING OIL PUMP CORP. Race Series Camshaft Kit 7270ST
FEULING OIL PUMP CORP.
$2,069.95A properly engineered camshaft is the foundation of engine performance—dictating valve timing, lift, and duration that directly impact horsepower, torque delivery, and rev capability. The FEULING OIL PUMP CORP. Race Series Camshaft Kit 7270ST is...09251418- SKU:
- 09251418
- Availability:
- Ships Same Business Day
- Weight:
- 11.45 LBS
- PRODUCT NAME:
- CAMSHAFT KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MODEL:
- RACE SERIES®
- TYPE:
- CHAIN
- GRIND:
- 538 SERIES
$2,069.95 -
FEULING OIL PUMP CORP. Race Series Camshaft Kit 7271
FEULING OIL PUMP CORP.
$2,049.95If you're serious about extracting maximum horsepower and torque from your engine, cam selection is non-negotiable. The FEULING OIL PUMP CORP. Race Series Camshaft Kit 7271 delivers aggressive valve timing and lift characteristics engineered for high-RPM...09251419- SKU:
- 09251419
- Availability:
- Ships Same Business Day
- Weight:
- 11.70 LBS
- PRODUCT NAME:
- CAMSHAFT KIT
- RIDING STYLE:
- STREET
- GRIND:
- 538 SERIES
- MODEL:
- RACE SERIES®
- TYPE:
- CHAIN
- UNITS:
- KIT
$2,049.95 -
FEULING OIL PUMP CORP. Valve Seals 1075
FEULING OIL PUMP CORP.
$15.95Valve seal degradation is one of the most common culprits behind oil consumption issues and carbon buildup in high-performance engines. FEULING OIL PUMP CORP. Valve Seals 1075 are engineered to maintain a reliable barrier between your valve stem and...09261166- SKU:
- 09261166
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE
- MATERIAL:
- VITON
- PRODUCT NAME:
- SEAL
- UNITS:
- 4 PACK
- APPLICATION:
- INTAKE
- RIDING STYLE:
- STREET
$15.95 -
FEULING OIL PUMP CORP. Valve Seals - Twin Cam 1076
FEULING OIL PUMP CORP.
$15.95Valve seal degradation is one of the most common culprits behind oil consumption issues and performance loss in Twin Cam engines. The Feuling OIL PUMP CORP. Valve Seals (1076) are engineered with Viton® material to withstand sustained high temperatures...09261167- SKU:
- 09261167
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE
- PRODUCT NAME:
- SEAL
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$15.95 -
ROUGH CRAFTS Chrome Cam Cover - Grooved RC-610-003
ROUGH CRAFTS
$359.95A quality cam cover does more than protect your engine's internal components—it establishes visual presence while maintaining the precision fit your M8 demands. The ROUGH CRAFTS Chrome Cam Cover combines CNC-machined billet construction with chrome...09401959- SKU:
- 09401959
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- TYPE:
- CAM
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- STYLE:
- GROOVED
$359.95 -
THRASHIN SUPPLY CO. Point Cover - Dish - Polished - Twin Cam TSC-3026-2
THRASHIN SUPPLY CO.
$59.95A polished point cover isn't just cosmetic—it protects your ignition system from moisture and debris while completing a finished engine bay aesthetic. For Twin Cam engines, this THRASHIN SUPPLY CO. cover delivers OEM-level fit and durability without...09401716- SKU:
- 09401716
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- BILLET ALUMINUM
- TYPE:
- POINT
- RIDING STYLE:
- STREET
- STYLE:
- DISHED
- COLOR/FINISH:
- POLISHED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$59.95 -
THRASHIN SUPPLY CO. Point Cover - Dish - Black - Twin Cam TSC-3026-4
THRASHIN SUPPLY CO.
$59.95A quality point cover protects your Twin Cam's ignition system from road grime, moisture, and debris while maintaining a clean, finished appearance in the engine bay. The Thrashin Supply Co. dish design provides reliable coverage with a streamlined look...09401717- SKU:
- 09401717
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- BILLET ALUMINUM
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- STYLE:
- DISHED
- TYPE:
- POINT
$59.95 -
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-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
