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
-
EASTERN MOTORCYCLE PARTS Flywheel Washers A-6506B
EASTERN MOTORCYCLE PARTS
$35.95Flywheel washers are critical wear items that prevent axial movement and bearing damage in your engine's rotating assembly. The A-6506B delivers OEM-equivalent performance at a fraction of dealership pricing, ensuring your flywheel maintains proper...09220110- SKU:
- 09220110
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- THRUST WASHER
- SIZE IMPERIAL:
- +0.005'
- TYPE:
- FLYWHEEL
- UNITS:
- PAIR
- MATERIAL:
- BRONZE
- RIDING STYLE:
- STREET
$35.95 -
EASTERN MOTORCYCLE PARTS Spacer Cam 41-0130
EASTERN MOTORCYCLE PARTS
$28.30Precise valve timing is non-negotiable in high-performance applications, and the EASTERN MOTORCYCLE PARTS Spacer Cam 41-0130 delivers the critical adjustability you need to dial in your engine's performance curve. This U.S.-manufactured component allows...09250921- SKU:
- 09250921
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- CAM
- PRODUCT NAME:
- SPROCKET
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.100'
$28.30 -
EASTERN MOTORCYCLE PARTS Spacer Cam 41-0134
EASTERN MOTORCYCLE PARTS
$28.30Precision timing is non-negotiable in high-performance applications, and the Eastern Motorcycle Parts Spacer Cam 41-0134 delivers the exact valve event control you need for optimized engine dynamics. This U.S.A.-manufactured component ensures consistent...09250923- SKU:
- 09250923
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- CAM
- PRODUCT NAME:
- SPROCKET
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.120'
$28.30 -
EASTERN MOTORCYCLE PARTS Spacer Cam 41-0136
EASTERN MOTORCYCLE PARTS
$28.30Proper cam timing is foundational to engine performance, and the Eastern Motorcycle Parts Spacer Cam 41-0136 delivers the precision adjustment needed for optimized valve operation. Whether you're fine-tuning a stock engine or dialing in a modified build,...09250924- SKU:
- 09250924
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.130'
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SPROCKET
- TYPE:
- CAM
$28.30 -
EASTERN MOTORCYCLE PARTS Spacer Cam 41-0138
EASTERN MOTORCYCLE PARTS
$28.30Precision timing is everything in high-performance applications, and a quality spacer cam ensures your valve train operates at peak efficiency without compromise. The Eastern Motorcycle Parts Spacer Cam 41-0138 delivers the reliability and exact...09250925- SKU:
- 09250925
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- SIZE IMPERIAL:
- 0.140'
- TYPE:
- CAM
- PRODUCT NAME:
- SPROCKET
$28.30 -
EASTERN MOTORCYCLE PARTS Spacer Cam 41-0140
EASTERN MOTORCYCLE PARTS
$28.30Precise valve timing is foundational to any high-performance engine build, and a quality spacer cam ensures your camshaft sits exactly where it needs to be for optimal lift and duration characteristics. The EASTERN MOTORCYCLE PARTS Spacer Cam 41-0140...09250926- SKU:
- 09250926
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.150'
- UNITS:
- 5 PACK
- TYPE:
- CAM
- PRODUCT NAME:
- SPROCKET
$28.30 -
EASTERN MOTORCYCLE PARTS Spacer Cam 41-0145
EASTERN MOTORCYCLE PARTS
$49.95Precise valve timing is the foundation of reliable engine performance, and a quality spacer cam ensures your valvetrain operates within exact specifications. The EASTERN MOTORCYCLE PARTS Spacer Cam 41-0145 maintains critical clearances and prevents...09250927- SKU:
- 09250927
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.130'
- PRODUCT NAME:
- SPACER KIT
- SIZE IMPERIAL:
- 0.100'
- SIZE IMPERIAL:
- 0.150'
- UNITS:
- SET
- SIZE IMPERIAL:
- 0.110'
- TYPE:
- CAM
- SIZE IMPERIAL:
- 0.120'
- SIZE IMPERIAL:
- 0.140'
$49.95 -
EASTERN MOTORCYCLE PARTS Rod Bearings B-EV-13
EASTERN MOTORCYCLE PARTS
$15.95Rod bearings are the critical interface between your crankshaft and connecting rods—they're working under extreme pressure and heat on every combustion cycle. Eastern Motorcycle Parts' B-EV-13 rod bearings are engineered to handle high-RPM loads while...09240468- SKU:
- 09240468
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- BEARING
- APPLICATION:
- CONNECTING ROD
- UNITS:
- SET
- RIDING STYLE:
- STREET
- OUTSIDE DIAMETER IMPERIAL:
- OVERSIZE (+0.0004')
- TYPE:
- ROLLER
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
EASTERN MOTORCYCLE PARTS Rod Bearings - Standard B-EV-1
EASTERN MOTORCYCLE PARTS
$21.95Rod bearings are the critical interface between your crankshaft and connecting rods—they must handle extreme pressure, high RPM cycles, and sustained loads without failure. The EASTERN MOTORCYCLE PARTS Standard B-EV-1 delivers the precision tolerances...09240474- SKU:
- 09240474
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- ROLLER
- RIDING STYLE:
- STREET
- APPLICATION:
- CONNECTING ROD
- OUTSIDE DIAMETER IMPERIAL:
- STANDARD
- UNITS:
- SET
- PRODUCT NAME:
- BEARING
$21.95 -
EASTERN MOTORCYCLE PARTS Rod Bearings B-EV-2
EASTERN MOTORCYCLE PARTS
$21.95Rod bearings are critical to engine reliability, directly affecting crankshaft stability and oil film strength under extreme load. The Eastern Motorcycle Parts B-EV-2 delivers precision tolerances and material consistency that prevent catastrophic...09240475- SKU:
- 09240475
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- APPLICATION:
- CONNECTING ROD
- OUTSIDE DIAMETER IMPERIAL:
- OVERSIZE (+0.0002')
- UNITS:
- SET
$21.95 -
EASTERN MOTORCYCLE PARTS Rod Bearings B-EV-4
EASTERN MOTORCYCLE PARTS
$21.95Rod bearings are the critical interface between your crankshaft and connecting rods—they must handle extreme loads and temperatures without failure. The Eastern Motorcycle Parts B-EV-4 delivers the precision tolerances and material integrity required for...09240477- SKU:
- 09240477
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- BEARING
- OUTSIDE DIAMETER IMPERIAL:
- OVERSIZE (+0.0006')
- RIDING STYLE:
- STREET
- APPLICATION:
- CONNECTING ROD
- UNITS:
- SET
- TYPE:
- ROLLER
$21.95 -
EASTERN MOTORCYCLE PARTS Rod Bearings B-EV-6
EASTERN MOTORCYCLE PARTS
$21.95Rod bearings are critical to engine longevity and reliability—they're the foundation that keeps your crankshaft spinning smoothly under extreme loads. The Eastern Motorcycle Parts B-EV-6 delivers OEM-quality performance with domestic manufacturing,...09240479- SKU:
- 09240479
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- UNITS:
- SET
- OUTSIDE DIAMETER IMPERIAL:
- OVERSIZE (+0.001')
- PRODUCT NAME:
- BEARING
- APPLICATION:
- CONNECTING ROD
$21.95 -
EASTERN MOTORCYCLE PARTS Bearing A-8990
EASTERN MOTORCYCLE PARTS
$26.95A worn mainshaft bearing doesn't just compromise power delivery—it introduces play that cascades through your entire drivetrain, accelerating wear on adjacent components and unpredictably altering shift quality. The EASTERN MOTORCYCLE PARTS Bearing...09240588- SKU:
- 09240588
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- OPEN END
$26.95 -
EASTERN MOTORCYCLE PARTS Bearing A-9025
EASTERN MOTORCYCLE PARTS
$35.95A worn or failing mainshaft bearing will compromise your Big Twin's reliability and power delivery, leading to costly secondary damage if left unchecked. The Eastern Motorcycle Parts A-9025 is a direct OEM replacement that restores proper shaft support...09240589- SKU:
- 09240589
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- TYPE:
- OPEN END
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
$35.95Qty in Cart: 0Quantity:Price:$35.95Subtotal: -
EASTERN MOTORCYCLE PARTS Bearing A-9058
EASTERN MOTORCYCLE PARTS
$35.95A worn or damaged mainshaft bearing compromises transmission reliability and creates excessive noise during operation. The EASTERN MOTORCYCLE PARTS Bearing A-9058 restores precise shaft alignment and smooth power delivery, essential for maintaining...09240590- SKU:
- 09240590
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- NEEDLE
- APPLICATION:
- CAM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
$35.95 -
EASTERN MOTORCYCLE PARTS Bearing A-9063
EASTERN MOTORCYCLE PARTS
$31.95A worn mainshaft bearing compromises your engine's reliability and performance, leading to excessive vibration, noise, and potential catastrophic failure. The EASTERN MOTORCYCLE PARTS Bearing A-9063 is a direct OEM-specification replacement that restores...09240591- SKU:
- 09240591
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- OPEN END
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
$31.95 -
EASTERN MOTORCYCLE PARTS Bearing A-24648-77
EASTERN MOTORCYCLE PARTS
$51.95A worn or damaged mainshaft bearing directly compromises your 5-speed Big Twin's reliability and performance—leading to increased friction, gear noise, and potential catastrophic failure. This genuine Eastern Motorcycle Parts bearing restores proper...09240592- SKU:
- 09240592
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- TYPE:
- OPEN END
- RIDING STYLE:
- STREET
$51.95 -
EASTERN MOTORCYCLE PARTS Bearing A-35960-54
EASTERN MOTORCYCLE PARTS
$26.95A worn or damaged mainshaft bearing will compromise your Big Twin's reliability and shift quality, potentially leading to costly transmission failure. This OEM-specification replacement bearing restores precise shaft alignment and smooth power delivery,...09240593- SKU:
- 09240593
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- TYPE:
- CLOSED END
- RIDING STYLE:
- STREET
$26.95 -
EASTERN MOTORCYCLE PARTS Bearing A-35961-52
EASTERN MOTORCYCLE PARTS
$35.95A worn or damaged mainshaft bearing compromises transmission reliability and introduces excess noise and vibration into your drivetrain. This OEM-specification replacement bearing restores precise shaft alignment and smooth power delivery, essential for...09240594- SKU:
- 09240594
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- TYPE:
- OPEN END
- RIDING STYLE:
- STREET
$35.95 -
EASTERN MOTORCYCLE PARTS Left Main Bearing 45-0215
EASTERN MOTORCYCLE PARTS
$130.95The mainshaft bearing is a critical component in your Big Twin's transmission, directly affecting power delivery, shifting smoothness, and overall drivetrain longevity. A worn or damaged bearing will introduce play in the mainshaft, compromising shift...09240595- SKU:
- 09240595
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- TYPE:
- OPEN END
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
$130.95
