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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EASTERN MOTORCYCLE PARTS Oil Line O-6-082
EASTERN MOTORCYCLE PARTS
$35.95Reliable oil line routing is fundamental to engine longevity in high-performance applications. The EASTERN MOTORCYCLE PARTS Oil Line O-6-082 delivers dependable flow management with corrosion-resistant construction, ensuring consistent oil delivery under...09500537- SKU:
- 09500537
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- MATERIAL:
- STEEL
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- EACH
- PRODUCT NAME:
- LINE KIT
- STYLE:
- FEED LINE
$35.95 -
EASTERN MOTORCYCLE PARTS Relief Valve Spring - Big Twin A-26210-99
EASTERN MOTORCYCLE PARTS
$2.70The relief valve spring is a critical hydraulic component that maintains proper oil pressure throughout your Big Twin engine, preventing catastrophic pressure spikes that can compromise gaskets, seals, and internal components. A worn or weak spring...09500232- SKU:
- 09500232
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- STREET
- TYPE:
- RELIEF VALVE
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SPRING
$2.70 -
EASTERN MOTORCYCLE PARTS Nut Rocker Shaft - Black/Chrome - 4 Pack V-13-245
EASTERN MOTORCYCLE PARTS
$18.95Rocker shaft integrity is critical to valve train reliability and engine performance—worn or damaged shafts compromise timing precision and increase wear on adjacent components. This 4-pack of Eastern Motorcycle Parts rocker shafts delivers OEM-quality...09500972- SKU:
- 09500972
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- RIDING STYLE:
- STREET
- TYPE:
- NUT ROCKER
- BASE COLOR:
- BLACK
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- NUT
- UNITS:
- 4 PACK
$18.95 -
EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer A-24008-99
EASTERN MOTORCYCLE PARTS
$63.95Proper sprocket shaft alignment is critical to drivetrain efficiency and longevity. This precision-engineered spacer ensures correct chain tension and sprocket geometry, preventing premature wear on your gears and transmission. Installing the right...09500228- SKU:
- 09500228
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SHAFT SPACER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- SPROCKET
$63.95 -
EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer - Softail A-24038-99
EASTERN MOTORCYCLE PARTS
$47.95Precise sprocket shaft alignment is critical for smooth power delivery and longevity in Softail drivetrains. This Eastern Motorcycle Parts spacer eliminates play between components, reducing vibration and wear on your primary chain and sprockets. A...09500230- SKU:
- 09500230
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- SHAFT SPACER
- TYPE:
- SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$47.95 -
EASTERN MOTORCYCLE PARTS Left Ball Bearing A-8989
EASTERN MOTORCYCLE PARTS
$37.95Worn or damaged wheel bearings compromise handling precision and create safety risks—especially critical in high-performance riding where steering response and stability are non-negotiable. The Eastern Motorcycle Parts Left Ball Bearing A-8989 delivers...09500325- SKU:
- 09500325
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- TYPE:
- COUNTERBALANCE SHAFT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- LEFT
- UNITS:
- EACH
$37.95 -
EASTERN MOTORCYCLE PARTS Right Ball Bearing A-8991
EASTERN MOTORCYCLE PARTS
$33.95Precision-engineered ball bearings are critical to maintaining smooth, reliable operation in high-performance motorcycle applications. The Eastern Motorcycle Parts A-8991 delivers the exact tolerances and durability you need to keep your drivetrain...09500326- SKU:
- 09500326
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- MOUNTING POSITION:
- RIGHT
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- TYPE:
- COUNTERBALANCE SHAFT
- RIDING STYLE:
- STREET
$33.95 -
EASTERN MOTORCYCLE PARTS Crankcase Roller Bearings A-9261-12
EASTERN MOTORCYCLE PARTS
$14.95Crankcase roller bearings are critical to maintaining proper crankshaft clearance and reducing parasitic friction in high-RPM applications. Quality bearings directly impact engine reliability, longevity, and power output—especially in forced induction or...09500327- SKU:
- 09500327
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- STANDARD
- PRODUCT NAME:
- BEARING
- SIZE:
- STANDARD
- TYPE:
- ROLLER
- UNITS:
- 12 PACK
$14.95 -
EASTERN MOTORCYCLE PARTS Main Bearing Washer A-8972
EASTERN MOTORCYCLE PARTS
$32.40Main bearing washers are critical load-bearing components that prevent shaft movement and distribute pressure evenly across your engine's bearings. A quality washer like the A-8972 ensures precise clearances, reduces wear, and maintains the integrity of...09500368- SKU:
- 09500368
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE BEARING
- UNITS:
- 5 PACK
$32.40Qty in Cart: 0Quantity:Price:$32.40Subtotal: -
EASTERN MOTORCYCLE PARTS Push Rod Tube Washer A-6762B
EASTERN MOTORCYCLE PARTS
$8.10Push rod tube washers are critical components that prevent oil leakage and maintain proper seal integrity in your engine's valve train. A worn or missing washer compromises compression and can lead to costly oil seepage over time. The Eastern Motorcycle...09500369- SKU:
- 09500369
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD TUBE
- UNITS:
- 10 PACK
$8.10 -
EASTERN MOTORCYCLE PARTS Bearing - White/Gray A-24659-87
EASTERN MOTORCYCLE PARTS
$45.95Precision bearing performance depends on reliable component quality—this OEM-specification bearing delivers the exact fit and durability your motorcycle demands. Eastern Motorcycle Parts' domestic manufacturing ensures consistent tolerances and material...09240268- SKU:
- 09240268
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- ROLLER
- RIDING STYLE:
- STREET
- APPLICATION:
- PINION SHAFT
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
$45.95 -
EASTERN MOTORCYCLE PARTS Bearing - Green A-24660-87
EASTERN MOTORCYCLE PARTS
$43.95Precision bearing replacement is critical for maintaining steering response and handling consistency in your motorcycle. This OEM-equivalent bearing delivers the same performance specifications as factory components while offering verified domestic...09240269- SKU:
- 09240269
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- APPLICATION:
- PINION SHAFT
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
$43.95 -
EASTERN MOTORCYCLE PARTS Bearing Assembly - Timken A-24729-74A
EASTERN MOTORCYCLE PARTS
$115.95A quality bearing assembly is foundational to reliable motorcycle performance, directly affecting wheel rotation efficiency and overall drivetrain longevity. The Timken A-24729-74A meets or exceeds OEM specifications, ensuring you get factory-level...09240270- SKU:
- 09240270
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING
- TYPE:
- ROLLER
$115.95 -
EASTERN MOTORCYCLE PARTS Pinion Bushing A-25582-73
EASTERN MOTORCYCLE PARTS
$37.95Precision drivetrain geometry depends on bushing integrity, and this solid brass pinion bushing maintains critical tolerances while resisting wear under sustained load cycles. Brass composition provides optimal friction characteristics and corrosion...09240273- SKU:
- 09240273
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- SIZE:
- STANDARD
- APPLICATION:
- PINION SHAFT
- MATERIAL:
- BRASS
- PRODUCT NAME:
- BUSHING
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
$37.95 -
EASTERN MOTORCYCLE PARTS Bearing Kit A-24004-03
EASTERN MOTORCYCLE PARTS
$145.95A quality bearing kit is the foundation of reliable drivetrain performance, and this Eastern Motorcycle Parts bearing assembly delivers the precision fit and durability your build demands. Whether you're rebuilding a transmission, replacing worn races,...09210526- SKU:
- 09210526
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
- RIDING STYLE:
- STREET
- TYPE:
- SPROCKET SHAFT
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
$145.95 -
EASTERN MOTORCYCLE PARTS Cam Gear Shims - Big Twin A-25556-79
EASTERN MOTORCYCLE PARTS
$14.80Precise cam timing is non-negotiable for Big Twin performance, and worn or improperly shimmed cam gears will rob you of power and reliability. EASTERN MOTORCYCLE PARTS cam gear shims deliver the exact clearance specifications your engine demands,...DS194169- SKU:
- DS194169
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SHIM
- TYPE:
- CAM
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.080'
- UNITS:
- 5 PACK
$14.80 -
EASTERN MOTORCYCLE PARTS Cam Bearing 40-0305
EASTERN MOTORCYCLE PARTS
$16.95A worn or damaged cam bearing compromises valve timing precision and can accelerate wear across your entire valvetrain. The Eastern Motorcycle Parts Cam Bearing 40-0305 restores OEM specifications, ensuring reliable operation and consistent performance...09240263- SKU:
- 09240263
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- TYPE:
- NEEDLE
- APPLICATION:
- CAM
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
$16.95 -
EASTERN MOTORCYCLE PARTS Bearing Assembly - Timken A-9028
EASTERN MOTORCYCLE PARTS
$134.95A quality bearing assembly is fundamental to reliable motorcycle operation—poor bearings lead to increased friction, premature wear, and potential catastrophic failure. The Timken A-9028 meets or exceeds OEM specifications while delivering the precision...09240108- SKU:
- 09240108
- Availability:
- Ships Same Business Day
- Weight:
- 0.87 LBS
- TYPE:
- ROLLER
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
$134.95 -
EASTERN MOTORCYCLE PARTS Bearing A-8876A
EASTERN MOTORCYCLE PARTS
$60.95A worn or damaged mainshaft bearing compromises your 5-speed Big Twin's reliability and can lead to catastrophic transmission failure. This OEM-quality replacement bearing restores proper shaft alignment and smooth engagement, eliminating noise and play...09240585- SKU:
- 09240585
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
- TYPE:
- OPEN END
- PRODUCT NAME:
- BEARING
$60.95 -
EASTERN MOTORCYCLE PARTS Bearing A-8977
EASTERN MOTORCYCLE PARTS
$41.95A worn mainshaft bearing compromises shift quality, introduces unwanted noise, and can lead to catastrophic transmission failure if left unaddressed. The EASTERN MOTORCYCLE PARTS Bearing A-8977 is a direct OEM replacement engineered to restore precise...09240587- SKU:
- 09240587
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- TYPE:
- CLOSED END
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
$41.95
