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 Dowel Pin Bushing A-275
EASTERN MOTORCYCLE PARTS
Now: $4.82Was: $5.30Precision dowel pin bushings are critical for maintaining accurate component alignment and preventing unwanted movement in high-vibration environments. The EASTERN MOTORCYCLE PARTS A-275 delivers the tight tolerances and reliable fit that separates a...09250531- SKU:
- 09250531
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- DOWEL PIN
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
- TYPE:
- PINION
- TYPE:
- GEAR
Now: $4.82Was: $5.30 -
On Sale
EASTERN MOTORCYCLE PARTS Cam Shims - XL A-6773
EASTERN MOTORCYCLE PARTS
Now: $6.10Was: $6.70Cam shim selection is critical to achieving proper valve clearance and cam lobe geometry—get it wrong, and you're compromising power delivery and engine longevity. The EASTERN MOTORCYCLE PARTS Cam Shims XL A-6773 provide the precision fitment needed...09250284- SKU:
- 09250284
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- SIZE IMPERIAL:
- 0.005'
- TYPE:
- 2ND GEAR
- TYPE:
- CAM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- UNITS:
- 10 PACK
Now: $6.10Was: $6.70Qty in Cart: 0Quantity:Price:Now: $6.10Was: $6.70Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Cam Shims - XL A-6775
EASTERN MOTORCYCLE PARTS
Now: $6.10Was: $6.70Proper cam shimming is non-negotiable when dialing in a performance cam setup—incorrect shim selection directly impacts valve lift, timing accuracy, and overall engine reliability. The EASTERN MOTORCYCLE PARTS Cam Shims A-6775 deliver the precision...09250285- SKU:
- 09250285
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- SIZE IMPERIAL:
- 0.010'
- TYPE:
- CAM
- UNITS:
- 10 PACK
- TYPE:
- 2ND GEAR
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
Now: $6.10Was: $6.70 -
On Sale
EASTERN MOTORCYCLE PARTS Cam Shims - XL A-6778
EASTERN MOTORCYCLE PARTS
Now: $6.10Was: $6.70Proper cam timing is non-negotiable when installing a new camshaft—even small deviations significantly impact valve overlap, peak power delivery, and engine stability across the RPM band. EASTERN MOTORCYCLE PARTS Cam Shims (A-6778) give you the precision...09250286- SKU:
- 09250286
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- 2ND GEAR
- TYPE:
- CAM
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.015'
Now: $6.10Was: $6.70 -
On Sale
EASTERN MOTORCYCLE PARTS Washer Thrust Cam - .040" A-25550-90
EASTERN MOTORCYCLE PARTS
Now: $12.29Was: $13.50Precision valve timing depends on reliable cam thrust control, and this Eastern Motorcycle Parts washer delivers the exact clearance specifications your engine demands. A properly seated thrust cam washer prevents damaging side-to-side movement of your...09250288- SKU:
- 09250288
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- THRUST
- UNITS:
- 5 PACK
Now: $12.29Was: $13.50 -
On Sale
EASTERN MOTORCYCLE PARTS Cam Shims A-25555-84
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Proper valve timing is non-negotiable in high-performance engine builds, and worn or incorrect cam shims compromise both power delivery and engine longevity. The Eastern Motorcycle Parts A-25555-84 cam shims deliver precision fitment and reliable...09250289- SKU:
- 09250289
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- SIZE IMPERIAL:
- 0.45'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- TYPE:
- CAM
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Thrust Plate Cam Gears - XL A-25551-58
EASTERN MOTORCYCLE PARTS
MSRP: $26.95Now: $24.52Was: $26.95Precision cam timing is foundational to engine performance, and worn or improperly seated thrust plates compromise both reliability and horsepower delivery. The EASTERN MOTORCYCLE PARTS Thrust Plate Cam Gears maintain exact valve timing under load,...09250290- SKU:
- 09250290
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- TYPE:
- CAM
- PRODUCT NAME:
- THRUST PLATE
MSRP: $26.95Now: $24.52Was: $26.95Qty in Cart: 0Quantity:Price:MSRP: $26.95Now: $24.52Was: $26.95Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Connecting Rod Races E-2000
EASTERN MOTORCYCLE PARTS
MSRP: $31.95Now: $29.07Was: $31.95Connecting rod races are critical to engine longevity—they support the rod's rotational movement and absorb the intense pressure cycles of high-RPM operation. A quality race like the Eastern Motorcycle Parts E-2000 reduces friction and wear on your...09230270- SKU:
- 09230270
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- SET OF 3
- TYPE:
- CONNECTING ROD
- PRODUCT NAME:
- RACE
- RIDING STYLE:
- STREET
MSRP: $31.95Now: $29.07Was: $31.95 -
On Sale
EASTERN MOTORCYCLE PARTS Connecting Rod Races E-2001
EASTERN MOTORCYCLE PARTS
MSRP: $31.95Now: $29.07Was: $31.95Connecting rod races are critical to engine longevity and reliability, especially under high-load conditions where inadequate bearing surfaces lead to catastrophic failure. The EASTERN MOTORCYCLE PARTS E-2001 delivers precision-engineered races that...09230271- SKU:
- 09230271
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- RACE
- RIDING STYLE:
- STREET
- UNITS:
- SET OF 3
- TYPE:
- CONNECTING ROD
MSRP: $31.95Now: $29.07Was: $31.95 -
On Sale
EASTERN MOTORCYCLE PARTS Race Bearing A-24004-RACE
EASTERN MOTORCYCLE PARTS
MSRP: $92.95Now: $84.58Was: $92.95Race-grade bearings demand precision engineering and minimal runout to deliver the reliability your engine or transmission needs under sustained high RPM operation. The EASTERN MOTORCYCLE PARTS A-24004-RACE bearing is engineered to tighter tolerances...09210527- SKU:
- 09210527
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- TYPE:
- RACE
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
MSRP: $92.95Now: $84.58Was: $92.95 -
On Sale
EASTERN MOTORCYCLE PARTS Bushing A-25344-99
EASTERN MOTORCYCLE PARTS
MSRP: $26.95Now: $24.52Was: $26.95Worn bushings compromise your bike's handling precision and introduce play into critical suspension components. This OEM-spec bushing restores proper alignment and eliminates unwanted movement, delivering the responsive feedback you need whether you're...09210528- SKU:
- 09210528
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- PRODUCT NAME:
- BUSHING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- PINION
MSRP: $26.95Now: $24.52Was: $26.95 -
On Sale
EASTERN MOTORCYCLE PARTS P-ROD L-NUT7848W L84-15 A-7848W
EASTERN MOTORCYCLE PARTS
Now: $6.10Was: $6.70Proper rod end fastening is critical to maintaining structural integrity under high-load conditions, and this Eastern Motorcycle Parts P-rod L-nut ensures secure, reliable connections that won't loosen under vibration or extreme stress. Built to OEM...DS195159- SKU:
- DS195159
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- LOCK NUT
- UNITS:
- 10 PACK
Now: $6.10Was: $6.70 -
On Sale
EASTERN MOTORCYCLE PARTS Washers A-35875-SET
EASTERN MOTORCYCLE PARTS
MSRP: $41.95Now: $38.17Was: $41.95Precision-engineered washers are essential for securing critical fasteners on high-performance motorcycles, ensuring vibration-resistant connections that maintain structural integrity under extreme conditions. The Eastern Motorcycle Parts A-35875-SET...DS195160- SKU:
- DS195160
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- WASHER SET
- TYPE:
- GEAR END
- UNITS:
- 7 PACK
MSRP: $41.95Now: $38.17Was: $41.95 -
On Sale
EASTERN MOTORCYCLE PARTS Washers A-35811-36
EASTERN MOTORCYCLE PARTS
Now: $17.11Was: $18.80Countershaft washers are critical wear components that maintain proper endplay and gear alignment in your transmission—neglecting them leads to premature gear damage and costly rebuilds. Eastern Motorcycle Parts A-35811-36 washers deliver...DS195161- SKU:
- DS195161
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- 1ST GEAR
- TYPE:
- 2ND GEAR
- UNITS:
- 5 PACK
- PRODUCT NAME:
- WASHER SET
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
Now: $17.11Was: $18.80 -
On Sale
EASTERN MOTORCYCLE PARTS Spacers A-35079-80
EASTERN MOTORCYCLE PARTS
Now: $12.29Was: $13.50Proper wheel spacing is critical for alignment, suspension geometry, and brake clearance—especially in high-performance applications where precision matters. EASTERN MOTORCYCLE PARTS Spacers A-35079-80 deliver exact fitment without compromising...DS195163- SKU:
- DS195163
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- MAINSHAFT
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
Now: $12.29Was: $13.50 -
On Sale
EASTERN MOTORCYCLE PARTS Mainshaft Washers A-35365-36
EASTERN MOTORCYCLE PARTS
Now: $16.84Was: $18.50Mainshaft washers are critical to maintaining proper endplay tolerance in your transmission, directly impacting shift quality and component longevity. Over time, wear on these precision components can lead to excessive play, resulting in missed shifts...DS195164- SKU:
- DS195164
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- MAINSHAFT
- TYPE:
- 2ND GEAR
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- SIZE:
- STANDARD
- TYPE:
- 3RD GEAR
- UNITS:
- 5 PACK
Now: $16.84Was: $18.50Qty in Cart: 0Quantity:Price:Now: $16.84Was: $18.50Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Mainshaft Washers - .015" A-35365-93
EASTERN MOTORCYCLE PARTS
Now: $15.93Was: $17.50Mainshaft washers are critical precision components that manage endplay and maintain proper bearing preload in your transmission assembly. A worn or incorrect washer thickness creates excessive play, leading to gear noise, accelerated bearing wear, and...DS195168- SKU:
- DS195168
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- TYPE:
- 3RD GEAR
- TYPE:
- 2ND GEAR
- SIZE:
- +0,015'
- TYPE:
- MAINSHAFT
Now: $15.93Was: $17.50 -
On Sale
EASTERN MOTORCYCLE PARTS Washers A-35812-36
EASTERN MOTORCYCLE PARTS
Now: $15.93Was: $17.50Proper thrust washer selection is critical for maintaining correct crankshaft endplay and preventing catastrophic engine damage in Big Twin applications. This Eastern Motorcycle Parts washer ensures precise bearing surfaces and extends engine longevity...DS195169- SKU:
- DS195169
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- TYPE:
- 1ST GEAR
- PRODUCT NAME:
- WASHER SET
- TYPE:
- COUNTERSHAFT
- TYPE:
- THRUST
Now: $15.93Was: $17.50 -
On Sale
EASTERN MOTORCYCLE PARTS Washers - .060" A-35915-36
EASTERN MOTORCYCLE PARTS
MSRP: $26.95Now: $24.52Was: $26.95If your 4th gear countershaft is slipping or showing signs of wear, a worn retaining washer is often the culprit—and this failure cascades into catastrophic transmission damage. The Eastern Motorcycle Parts A-35915-36 washer restores proper gear...DS195170- SKU:
- DS195170
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- TYPE:
- 4TH GEAR
- TYPE:
- COUNTERSHAFT
- TYPE:
- OUTSIDE RETAINING
- PRODUCT NAME:
- WASHER SET
MSRP: $26.95Now: $24.52Was: $26.95 -
On Sale
EASTERN MOTORCYCLE PARTS Washers A-35917-36
EASTERN MOTORCYCLE PARTS
MSRP: $26.95Now: $24.52Was: $26.95Proper fastener sealing is foundational to reliable engine performance and longevity. These OEM-equivalent washers eliminate micro-leaks and ensure consistent pressure distribution across critical connection points. Made right here in the U.S.A., they...DS195171- SKU:
- DS195171
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- TYPE:
- COUNTERSHAFT
- PRODUCT NAME:
- WASHER SET
- TYPE:
- INNER RETAINING
MSRP: $26.95Now: $24.52Was: $26.95
