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 Spacers A-35079-80
EASTERN MOTORCYCLE PARTS
$13.30Made in the U.S.A.DS195163- SKU:
- DS195163
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- MAINSHAFT
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
$13.30 -
EASTERN MOTORCYCLE PARTS Mainshaft Washers A-35365-36
EASTERN MOTORCYCLE PARTS
$17.30Made in the U.S.A.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
$17.30Qty in Cart: 0Quantity:Price:$17.30Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Mainshaft Washers - .005" A-35365-87
EASTERN MOTORCYCLE PARTS
Now: $7.00Was: $11.50Made in the U.S.A.DS195165- SKU:
- DS195165
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- 5 PACK
- SIZE:
- UNDERSIZE (-0,005')
- TYPE:
- 2ND GEAR
- TYPE:
- 3RD GEAR
- TYPE:
- MAINSHAFT
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
Now: $7.00Was: $11.50Qty in Cart: 0Quantity:Price:Now: $7.00Was: $11.50Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Mainshaft Washers - .005" A-35365-91
EASTERN MOTORCYCLE PARTS
Now: $7.00Was: $11.50Made in the U.S.A.DS195166- SKU:
- DS195166
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- SIZE:
- OVERSIZE (+0,005')
- UNITS:
- 5 PACK
- TYPE:
- 3RD GEAR
- PRODUCT NAME:
- WASHER
- TYPE:
- 2ND GEAR
- TYPE:
- MAINSHAFT
Now: $7.00Was: $11.50Qty in Cart: 0Quantity:Price:Now: $7.00Was: $11.50Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Mainshaft Washers - .010" A-35365-92
EASTERN MOTORCYCLE PARTS
Now: $7.00Was: $11.50Made in the U.S.A.DS195167- SKU:
- DS195167
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- SIZE:
- +0,010'
- UNITS:
- 5 PACK
- TYPE:
- 3RD GEAR
- TYPE:
- MAINSHAFT
- TYPE:
- 2ND GEAR
Now: $7.00Was: $11.50 -
EASTERN MOTORCYCLE PARTS Mainshaft Washers - .015" A-35365-93
EASTERN MOTORCYCLE PARTS
$17.30Made in the U.S.A.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
$17.30 -
EASTERN MOTORCYCLE PARTS Washers A-35812-36
EASTERN MOTORCYCLE PARTS
$17.30Thrust washer for 4-Speed Big Twin engineDS195169- 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
$17.30 -
EASTERN MOTORCYCLE PARTS Washers - .060" A-35915-36
EASTERN MOTORCYCLE PARTS
$26.954th gear countershaft outside retaining washerDS195170- 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
$26.95 -
EASTERN MOTORCYCLE PARTS Washers A-35917-36
EASTERN MOTORCYCLE PARTS
$26.95Made in the U.S.A.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
$26.95Qty in Cart: 0Quantity:Price:$26.95Subtotal: -
EASTERN MOTORCYCLE PARTS Spacer A-24002-70
EASTERN MOTORCYCLE PARTS
$31.95Made in the U.S.A.DS195172- SKU:
- DS195172
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHAFT SPACER
- TYPE:
- MOTOR SPROCKET
- UNITS:
- EACH
$31.95 -
EASTERN MOTORCYCLE PARTS Bearing Retaining Washer - .065" - Big Twin A-35131-80
EASTERN MOTORCYCLE PARTS
$21.30Replacement retaining washers for 4-speed Big TwinsDS194179- SKU:
- DS194179
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- STYLE:
- 4-SPEED
- THICKNESS METRIC:
- 1.65 MM
- THICKNESS:
- 1,65 MM (0,065')
- TYPE:
- BEARING RETAINING
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,065'
- TYPE:
- MAINSHAFT
- UNITS:
- 5 PACK
$21.30 -
EASTERN MOTORCYCLE PARTS 4-Speed Gear Spacers - XL A-35809-58
EASTERN MOTORCYCLE PARTS
$17.30Gear spacers for 2-stroke ATVsDS194321- SKU:
- DS194321
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- SPACER
- TYPE:
- 2ND GEAR
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$17.30 -
EASTERN MOTORCYCLE PARTS Retaining Ring A-35337-56
EASTERN MOTORCYCLE PARTS
$6.60Made in the U.S.A.DS194324- SKU:
- DS194324
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- RETAINING RING
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$6.60 -
EASTERN MOTORCYCLE PARTS Roller Bearings A-35363-52
EASTERN MOTORCYCLE PARTS
$13.30Made in the U.S.A.DS194326- SKU:
- DS194326
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER BEARING
- UNITS:
- 5 PACK
$13.30 -
EASTERN MOTORCYCLE PARTS Bearing Retaining Ring A-35113-52
EASTERN MOTORCYCLE PARTS
$8.00Made in the U.S.A.DS194327- SKU:
- DS194327
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- RETAINING RING
- UNITS:
- 10 PACK
$8.00 -
EASTERN MOTORCYCLE PARTS Clutch Hub Bearing Rollers A-9540A
EASTERN MOTORCYCLE PARTS
$11.95High-quality OEM replacement componentsDS195005- SKU:
- DS195005
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING ROLLER
- TYPE:
- CLUTCH HUB
- UNITS:
- 20 PACK
$11.95 -
EASTERN MOTORCYCLE PARTS Idler Gear Stud with Bushing A-25791-77
EASTERN MOTORCYCLE PARTS
$26.95Idler gear bushing/stud, Made in the U.S.A.DS195007- SKU:
- DS195007
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- STUD
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- IDLER GEAR
$26.95 -
EASTERN MOTORCYCLE PARTS Cam Cover Bushing A-25581-36
EASTERN MOTORCYCLE PARTS
$37.95Made in the U.S.A.DS194147- SKU:
- DS194147
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- CAM COVER
- UNITS:
- EACH
$37.95 -
EASTERN MOTORCYCLE PARTS Plastic Breather Valve Washer Set - Big Twin A-25319-SET
EASTERN MOTORCYCLE PARTS
$33.95Use only plastic washers with plastic breather valves. Do not intermix plastic and steel parts., Made in the U.S.A.DS194160- SKU:
- DS194160
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- SIZE IMPERIAL:
- 0.140'
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.130'
- SIZE IMPERIAL:
- 0.135'
- SIZE IMPERIAL:
- 0.155'
- SIZE IMPERIAL:
- 0.165'
- UNITS:
- 8 PACK
- MATERIAL:
- PLASTIC
- SIZE IMPERIAL:
- 0.145'
- SIZE IMPERIAL:
- 0.150'
- SIZE IMPERIAL:
- 0.160'
- TYPE:
- BREATHER VALVE
$33.95 -
EASTERN MOTORCYCLE PARTS Cam Gear Shims - Big Twin A-25550-SET
EASTERN MOTORCYCLE PARTS
$39.95Made in the U.S.A.DS194162- SKU:
- DS194162
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- SHIM
- SIZE IMPERIAL:
- 0.050' - 0.095'
- TYPE:
- CAM
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$39.95
