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
-
KIBBLEWHITE Valve Guide 20-4321
KIBBLEWHITE
$37.93If you're rebuilding a high-revving engine or restoring a classic that demands reliability, valve guides are non-negotiable. The KIBBLEWHITE 20-4321 delivers precision engineering that minimizes...DS199765- SKU:
- DS199765
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- BROWN
- PRODUCT NAME:
- VALVE GUIDE
- COLOR/FINISH:
- BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.5630'
- SIZE IMPERIAL:
- OVERSIZE (+0.001')
- APPLICATION:
- INTAKE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- INSIDE DIAMETER IMPERIAL:
- 0.3090'
- MATERIAL:
- C630 BRONZE
$37.93 -
KIBBLEWHITE Cylinder Studs - Evolution/XL 20-2097
KIBBLEWHITE
$187.44High-performance cylinder studs are the foundation of a reliable engine assembly—especially under boost or high RPM loads where standard fasteners simply won't hold. The KIBBLEWHITE Evolution/XL...DS199770- SKU:
- DS199770
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
$187.44 -
KIBBLEWHITE Exhaust Valve - Evolution 20-4170
KIBBLEWHITE
$29.81If you're running a high-revving engine, valve wear is one of the quickest ways to lose performance and reliability. The KIBBLEWHITE Evolution 20-4170 exhaust valve eliminates that risk with a...DS198974- SKU:
- DS198974
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- STEM DIAMETER IMPERIAL:
- 0.3096'
- APPLICATION:
- EXHAUST
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 29°
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- HEAD DIAMETER IMPERIAL:
- 1.615'
- LENGTH IMPERIAL:
- 4.525'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$29.81 -
KIBBLEWHITE Intake Valve - XL 20-4196
KIBBLEWHITE
$54.10If you're running a high-performance engine, valve wear is one of the fastest paths to lost compression and declining performance. The Kibblewhite Intake Valve XL 20-4196 uses a proprietary nitriding...DS198975- SKU:
- DS198975
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- HEAD DIAMETER IMPERIAL:
- 1.935'
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 23°
- APPLICATION:
- INTAKE
- LENGTH IMPERIAL:
- 3.620'
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.3090'
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
$54.10 -
KIBBLEWHITE Exhaust Valve - XL 20-4197
KIBBLEWHITE
$54.10Kibblewhite's XL 20-4197 exhaust valves are engineered for engines that demand superior durability and reliability under extreme conditions. The stellite-tipped, nitrided construction delivers...DS198976- SKU:
- DS198976
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- APPLICATION:
- EXHAUST
- LENGTH IMPERIAL:
- 3.512'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.3384'
- HEAD DIAMETER IMPERIAL:
- 1.570'
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 29°
$54.10 -
KIBBLEWHITE Intake Valve - 883 XL 20-20090
KIBBLEWHITE
$37.55If you're running a high-mileage 883 XL or preparing your engine for sustained performance, valve wear and heat management directly impact reliability and throttle response. KIBBLEWHITE's one-piece...DS198806- SKU:
- DS198806
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.3100'
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- LENGTH IMPERIAL:
- 4.550'
- TULIP ANGLE:
- 23°
- APPLICATION:
- INTAKE
- HEAD DIAMETER IMPERIAL:
- 1.585'
- UNITS:
- EACH
$37.55Qty in Cart: 0Quantity:Price:$37.55Subtotal: -
KIBBLEWHITE Exhaust Valve - 883 XL 20-20092
KIBBLEWHITE
$37.55If you're running a high-revving 883 XL, valve durability directly impacts your engine's reliability and performance ceiling. The KIBBLEWHITE exhaust valve uses a nitrided stellite tip and one-piece...DS198807- SKU:
- DS198807
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- APPLICATION:
- EXHAUST
- HEAD DIAMETER IMPERIAL:
- 1.350'
- MODEL:
- BLACK DIAMOND™
- LENGTH IMPERIAL:
- 4.640'
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.3095'
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 17°
$37.55 -
KIBBLEWHITE Intake Valve - Twin Cam 20-20108
KIBBLEWHITE
$35.22If you're running a high-revving Twin Cam engine, valve wear is a real concern—especially under sustained boost or competition conditions. The Kibblewhite 20-20108 intake valves eliminate that worry...09260408- SKU:
- 09260408
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- STEM DIAMETER IMPERIAL:
- 0.3100'
- LENGTH IMPERIAL:
- 4.445'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 23°
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- HEAD DIAMETER IMPERIAL:
- 2.000'
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
$35.22 -
KIBBLEWHITE Intake Valve - Big Twin 20-4257
KIBBLEWHITE
$36.42If you're running a Big Twin engine, valve longevity and flow efficiency directly impact your power output and reliability. The Kibblewhite 20-4257 intake valve combines superior wear resistance with...09260409- SKU:
- 09260409
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- HEAD DIAMETER IMPERIAL:
- 1.750'
- LENGTH IMPERIAL:
- 3.800'
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.3765'
- TULIP ANGLE:
- 23°
- APPLICATION:
- INTAKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
$36.42 -
KIBBLEWHITE Valve Spring Kit - Big Twin 20-20430
KIBBLEWHITE
$138.87Stock valve springs wear over time, leading to valve float, inconsistent lift, and lost power across your rev range. The KIBBLEWHITE Valve Spring Kit restores OE performance standards with...09261442- SKU:
- 09261442
- Availability:
- Ships Same Business Day
- Weight:
- 1.46 LBS
- RIDING STYLE:
- STREET
- SPRING OPEN PRESSURE:
- 272 LB
- SPRING SEAT PRESSURE:
- 129 LB
- TYPE:
- VALVE
- COLLAR MATERIAL:
- STEEL
- MATERIAL:
- STEEL
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.415'
$138.87 -
KIBBLEWHITE Valve Spring Kit - XL 20-20440
KIBBLEWHITE
$134.12Valve spring degradation is one of the most common culprits behind loss of compression, misfires, and reduced engine performance—especially in high-revving or modified applications. The KIBBLEWHITE...09261444- SKU:
- 09261444
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- COLLAR MATERIAL:
- STEEL
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- SPRING LIFT IMPERIAL:
- 0.400'
- SPRING SEAT PRESSURE:
- 95 LB
- TYPE:
- VALVE
- SPRING OPEN PRESSURE:
- 325 LB
$134.12 -
KIBBLEWHITE Lower Collar - .725" - Big Twin 20-2111
KIBBLEWHITE
$34.80Proper valve seal clearance is critical to preventing oil leakage and maintaining consistent valve train geometry in high-performance Big Twin engines. The KIBBLEWHITE Lower Collar ensures your valve...09261445- SKU:
- 09261445
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
- APPLICATION:
- INTAKE
- COLLAR MATERIAL:
- STEEL
- MATERIAL:
- STEEL
- APPLICATION:
- EXHAUST
- INSIDE DIAMETER IMPERIAL:
- 0.725'
- TYPE:
- VALVE
- PRODUCT NAME:
- SPRING COLLAR
- RIDING STYLE:
- STREET
- UNITS:
- SET OF 4
$34.80 -
KIBBLEWHITE Intake Valve - Big Twin 20-4101
KIBBLEWHITE
$36.12Intake valve longevity and flow efficiency are non-negotiable in high-performance Big Twin engines. The KIBBLEWHITE 20-4101 combines precision metallurgy with a specialized nitriding process to...09261452- SKU:
- 09261452
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.3765'
- LENGTH IMPERIAL:
- 3.590'
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 23°
- APPLICATION:
- INTAKE
- HEAD DIAMETER IMPERIAL:
- 1.750'
$36.12 -
KIBBLEWHITE Cylinder Stud - M8 - 8-Pack 20-21040
KIBBLEWHITE
$171.82Cylinder studs are critical fasteners that secure your cylinder head to the block—and substandard hardware can lead to blown gaskets, coolant leaks, and catastrophic engine failure. KIBBLEWHITE...24011105- SKU:
- 24011105
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
$171.82 -
KIBBLEWHITE Cylinder Dowels - Twin Cam 83080-4
KIBBLEWHITE
$13.01Proper cylinder head alignment is critical for sealing integrity, valve timing accuracy, and long-term engine reliability. KIBBLEWHITE cylinder dowels provide precision location points that eliminate...24010579- SKU:
- 24010579
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- CYLINDER
- UNITS:
- 4 PACK
- COLOR/FINISH:
- GRAY
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- DOWEL
$13.01 -
KIBBLEWHITE Intake Valve 20-20935
KIBBLEWHITE
$74.62Factory intake valves are often the first component to show signs of wear under sustained high-RPM operation, leading to loss of compression, reduced flow efficiency, and potential engine damage. The...09262991- SKU:
- 09262991
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 50.29 MM
- LENGTH IMPERIAL:
- 4.455'
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.2757'
- TULIP ANGLE:
- 23°
- UNITS:
- EACH
$74.62 -
KIBBLEWHITE Intake Valve 20-20940
KIBBLEWHITE
$51.79Intake valve performance directly impacts your engine's ability to breathe, meter fuel precisely, and maintain consistent combustion across the RPM range. The KIBBLEWHITE Black Diamond™ Intake Valve...09262992- SKU:
- 09262992
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 4.445'
- HEAD DIAMETER METRIC:
- 48.26 MM
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.2757'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 24°
$51.79 -
KIBBLEWHITE Exhaust Valve 20-20945
KIBBLEWHITE
$51.79Exhaust valves are critical to your engine's breathing efficiency and longevity, directly impacting power output and reliability under extreme conditions. The KIBBLEWHITE Black Diamond™ Exhaust Valve...09262993- SKU:
- 09262993
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- HEAD DIAMETER METRIC:
- 40.89 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 25°
- STEM DIAMETER IMPERIAL:
- 0.2755'
- APPLICATION:
- EXHAUST
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- LENGTH IMPERIAL:
- 4.545'
- UNITS:
- EACH
$51.79 -
KIBBLEWHITE Exhaust Valve 20-20950
KIBBLEWHITE
$74.62Exhaust valves experience extreme temperatures and constant cycling—factory units often can't handle high-performance demands without degradation. The Kibblewhite Black Diamond™ Exhaust Valve...09262994- SKU:
- 09262994
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- EACH
- STEM DIAMETER IMPERIAL:
- 0.2755'
- APPLICATION:
- EXHAUST
- LENGTH IMPERIAL:
- 4.560'
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- HEAD DIAMETER METRIC:
- 40.00 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 25°
$74.62 -
KIBBLEWHITE Intake Valve 20-20955
KIBBLEWHITE
$48.58Intake valve performance directly impacts combustion efficiency, throttle response, and engine longevity. The KIBBLEWHITE Black Diamond™ 20-20955 delivers superior sealing and durability through...09262995- SKU:
- 09262995
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- HEAD DIAMETER METRIC:
- 53.34 MM
- STEM DIAMETER IMPERIAL:
- 0.3108'
- TULIP ANGLE:
- 24°
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- LENGTH IMPERIAL:
- 4.475'
- RIDING STYLE:
- STREET
$48.58
