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
-
On Sale
EASTERN MOTORCYCLE PARTS Relief Valve Spring - Big Twin A-26210-99
EASTERN MOTORCYCLE PARTS
Now: $2.46Was: $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,...09500232- SKU:
- 09500232
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- STREET
- TYPE:
- RELIEF VALVE
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SPRING
Now: $2.46Was: $2.70 -
On Sale
EASTERN MOTORCYCLE PARTS Nut Rocker Shaft - Black/Chrome - 4 Pack V-13-245
EASTERN MOTORCYCLE PARTS
MSRP: $18.95Now: $17.24Was: $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...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
MSRP: $18.95Now: $17.24Was: $18.95 -
On Sale
EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer A-24008-99
EASTERN MOTORCYCLE PARTS
MSRP: $63.95Now: $58.19Was: $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...09500228- SKU:
- 09500228
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SHAFT SPACER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- SPROCKET
MSRP: $63.95Now: $58.19Was: $63.95 -
On Sale
EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer - Softail A-24038-99
EASTERN MOTORCYCLE PARTS
MSRP: $47.95Now: $43.63Was: $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...09500230- SKU:
- 09500230
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- SHAFT SPACER
- TYPE:
- SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $47.95Now: $43.63Was: $47.95 -
On Sale
EASTERN MOTORCYCLE PARTS Left Ball Bearing A-8989
EASTERN MOTORCYCLE PARTS
MSRP: $37.95Now: $34.53Was: $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...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
MSRP: $37.95Now: $34.53Was: $37.95 -
On Sale
EASTERN MOTORCYCLE PARTS Right Ball Bearing A-8991
EASTERN MOTORCYCLE PARTS
MSRP: $33.95Now: $30.89Was: $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...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
MSRP: $33.95Now: $30.89Was: $33.95 -
On Sale
EASTERN MOTORCYCLE PARTS Crankcase Roller Bearings A-9261-12
EASTERN MOTORCYCLE PARTS
MSRP: $14.95Now: $13.60Was: $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,...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
MSRP: $14.95Now: $13.60Was: $14.95 -
On Sale
EASTERN MOTORCYCLE PARTS Main Bearing Washer A-8972
EASTERN MOTORCYCLE PARTS
Now: $29.48Was: $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...09500368- SKU:
- 09500368
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE BEARING
- UNITS:
- 5 PACK
Now: $29.48Was: $32.40 -
On Sale
EASTERN MOTORCYCLE PARTS Push Rod Tube Washer A-6762B
EASTERN MOTORCYCLE PARTS
Now: $7.37Was: $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...09500369- SKU:
- 09500369
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD TUBE
- UNITS:
- 10 PACK
Now: $7.37Was: $8.10 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing - White/Gray A-24659-87
EASTERN MOTORCYCLE PARTS
MSRP: $45.95Now: $41.81Was: $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...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
MSRP: $45.95Now: $41.81Was: $45.95 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing - Green A-24660-87
EASTERN MOTORCYCLE PARTS
MSRP: $43.95Now: $39.99Was: $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...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
MSRP: $43.95Now: $39.99Was: $43.95 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Assembly - Timken A-24729-74A
EASTERN MOTORCYCLE PARTS
MSRP: $115.95Now: $105.51Was: $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...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
MSRP: $115.95Now: $105.51Was: $115.95 -
On Sale
EASTERN MOTORCYCLE PARTS Pinion Bushing A-25582-73
EASTERN MOTORCYCLE PARTS
MSRP: $37.95Now: $34.53Was: $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...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
MSRP: $37.95Now: $34.53Was: $37.95 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Kit A-24004-03
EASTERN MOTORCYCLE PARTS
MSRP: $145.95Now: $132.81Was: $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...09210526- SKU:
- 09210526
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
- RIDING STYLE:
- STREET
- TYPE:
- SPROCKET SHAFT
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
MSRP: $145.95Now: $132.81Was: $145.95 -
On Sale
EASTERN MOTORCYCLE PARTS Cam Gear Shims - Big Twin A-25556-79
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $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...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
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Cam Bearing 40-0305
EASTERN MOTORCYCLE PARTS
MSRP: $16.95Now: $15.42Was: $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,...09240263- SKU:
- 09240263
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- TYPE:
- NEEDLE
- APPLICATION:
- CAM
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
MSRP: $16.95Now: $15.42Was: $16.95Qty in Cart: 0Quantity:Price:MSRP: $16.95Now: $15.42Was: $16.95Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Assembly - Timken A-9028
EASTERN MOTORCYCLE PARTS
MSRP: $134.95Now: $122.80Was: $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...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
MSRP: $134.95Now: $122.80Was: $134.95 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing A-8876A
EASTERN MOTORCYCLE PARTS
MSRP: $60.95Now: $55.46Was: $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...09240585- SKU:
- 09240585
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
- TYPE:
- OPEN END
- PRODUCT NAME:
- BEARING
MSRP: $60.95Now: $55.46Was: $60.95 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing A-8977
EASTERN MOTORCYCLE PARTS
MSRP: $41.95Now: $38.17Was: $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...09240587- SKU:
- 09240587
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- TYPE:
- CLOSED END
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
MSRP: $41.95Now: $38.17Was: $41.95 -
On Sale
EASTERN MOTORCYCLE PARTS Race Bearing A-24605-07
EASTERN MOTORCYCLE PARTS
MSRP: $82.95Now: $75.48Was: $82.95Precision-engineered bearings are fundamental to reliable engine performance and longevity. The EASTERN MOTORCYCLE PARTS Race Bearing A-24605-07 delivers the tight tolerances and durability demanded...09250928- SKU:
- 09250928
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- TYPE:
- PINION
MSRP: $82.95Now: $75.48Was: $82.95
