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 Cam Gear Shims - Big Twin A-25550-36
EASTERN MOTORCYCLE PARTS
$13.30Made in the U.S.A.DS194163- SKU:
- DS194163
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SHIM
- TYPE:
- CAM
- SIZE IMPERIAL:
- 0.050'
$13.30 -
EASTERN MOTORCYCLE PARTS Cam Gear Shims - Big Twin A-25551-36
EASTERN MOTORCYCLE PARTS
$13.30Made in the U.S.A.DS194164- SKU:
- DS194164
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- SIZE IMPERIAL:
- 0.055'
- TYPE:
- CAM
- PRODUCT NAME:
- SHIM
$13.30 -
EASTERN MOTORCYCLE PARTS Cam Gear Shims - Big Twin A-25552-36
EASTERN MOTORCYCLE PARTS
$13.30Made in the U.S.A.DS194165- SKU:
- DS194165
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SHIM
- TYPE:
- CAM
- SIZE IMPERIAL:
- 0.060'
$13.30 -
EASTERN MOTORCYCLE PARTS Cam Gear Shims - Big Twin A-25553-36
EASTERN MOTORCYCLE PARTS
$13.30Made in the U.S.A.DS194166- SKU:
- DS194166
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- SIZE IMPERIAL:
- 0.065'
- PRODUCT NAME:
- SHIM
- TYPE:
- CAM
$13.30 -
EASTERN MOTORCYCLE PARTS Cam Gear Shims - Big Twin A-25554-36
EASTERN MOTORCYCLE PARTS
$13.30Made in the U.S.A.DS194167- SKU:
- DS194167
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- PRODUCT NAME:
- SHIM
- SIZE IMPERIAL:
- 0.070'
- TYPE:
- CAM
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$13.30 -
EASTERN MOTORCYCLE PARTS Cam Gear Shims - Big Twin A-25555-36
EASTERN MOTORCYCLE PARTS
$13.30Made in the U.S.A.DS194168- SKU:
- DS194168
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- 0.075'
- TYPE:
- CAM
$13.30 -
EASTERN MOTORCYCLE PARTS Cam Cover Bushing - XL A-25586-37
EASTERN MOTORCYCLE PARTS
$37.95High-quality OEM components, Made in the U.S.A.DS194171- SKU:
- DS194171
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- FEATURES:
- #1, 3, 4
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- SUPPORT PLATE
$37.95 -
EASTERN MOTORCYCLE PARTS Cam Bushing Kit - Big Twin 15-0117
EASTERN MOTORCYCLE PARTS
$117.95Made in the U.S.A.DS194172- SKU:
- DS194172
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- PRODUCT NAME:
- BUSHING KIT
- TYPE:
- CAM
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$117.95 -
EASTERN MOTORCYCLE PARTS Engine Sprocket Nut A-24003-55
EASTERN MOTORCYCLE PARTS
$12.95Motor sprocket nut for belt-drive conversions and/or eliminating compensating sprockets, Made in the U.S.A.DS194074- SKU:
- DS194074
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- TYPE:
- MOTOR SPROCKET
- PRODUCT NAME:
- NUT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$12.95 -
EASTERN MOTORCYCLE PARTS Left Side Crankcase Bushing A-24621-40
EASTERN MOTORCYCLE PARTS
$114.95Standard size, Made in the U.S.A.DS194098- SKU:
- DS194098
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
$114.95 -
EASTERN MOTORCYCLE PARTS Check Valve Spring - Big Twin A-26262-80
EASTERN MOTORCYCLE PARTS
$6.60Replacement spring relief valve for Big Twin oil pumpsDS194222- SKU:
- DS194222
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- CHECK VALVE
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPRING
$6.60 -
EASTERN MOTORCYCLE PARTS Oil Pump Bushing/Gasket Kit 17-0126
EASTERN MOTORCYCLE PARTS
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS194201- SKU:
- DS194201
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$16.95 -
EASTERN MOTORCYCLE PARTS Oil Pump Kit - Big Twin 17-0157
EASTERN MOTORCYCLE PARTS
$49.95Made in the U.S.A.DS194205- SKU:
- DS194205
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHAFT
- TYPE:
- OIL PUMP
- UNITS:
- KIT
$49.95 -
EASTERN MOTORCYCLE PARTS Bearing Retaining Washer - 0.070" - Big Twin A-35131-81
EASTERN MOTORCYCLE PARTS
$21.30Replacement retaining washers for 4-speed Big TwinsDS194181- SKU:
- DS194181
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- STYLE:
- 4-SPEED
- THICKNESS:
- 1,78 MM (0,070')
- THICKNESS IMPERIAL:
- 0.070'
- THICKNESS METRIC:
- 1.78 MM
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- UNITS:
- 5 PACK
- TYPE:
- BEARING RETAINING
$21.30 -
EASTERN MOTORCYCLE PARTS Main Shaft Thrust Washer - XL A-35326-SET
EASTERN MOTORCYCLE PARTS
$56.95EASTERN MOTORCYCLE PARTS Main Shaft Thrust Washer - XLDS194183- SKU:
- DS194183
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- STYLE:
- 4-SPEED
- UNITS:
- SET OF 15
- PRODUCT NAME:
- THRUST WASHER
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- MOUNTING POSITION:
- RIGHT SIDE
- THICKNESS:
- 0,76 MM - 3,18 MM (0,030' - 0,125')
- THICKNESS IMPERIAL:
- 0,030' - 0,125'
- THICKNESS METRIC:
- 0.76 MM - 3.18 MM
$56.95 -
EASTERN MOTORCYCLE PARTS Countershaft Thrust Washer - XL A-35840-SET
EASTERN MOTORCYCLE PARTS
$22.95Replacement OEM first gear thrust washersDS194187- SKU:
- DS194187
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,65 MM - 2,54 MM (0,065' - 0,100')
- MOUNTING POSITION:
- FIRST GEAR
- PRODUCT NAME:
- THRUST WASHER
- THICKNESS IMPERIAL:
- 0,065' - 0,100'
- UNITS:
- SET
- STYLE:
- 4-SPEED
- THICKNESS METRIC:
- 1.65 MM - 2.54 MM
- TYPE:
- COUNTERSHAFT
$22.95 -
On Sale
EASTERN MOTORCYCLE PARTS Countershaft Thrust Washer - XL A-35848-SET
EASTERN MOTORCYCLE PARTS
MSRP: $14.95Now: $10.00Was: $14.95Replacement OEM first gear thrust washersDS194188- SKU:
- DS194188
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- THRUST WASHER
- UNITS:
- SET
- MOUNTING POSITION:
- FIRST GEAR
- STYLE:
- 4-SPEED
- THICKNESS METRIC:
- 1.19 MM - 2.03 MM
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,19 MM - 2,03 MM (0,047' - 0,080')
- THICKNESS IMPERIAL:
- 0,047' - 0,080'
MSRP: $14.95Now: $10.00Was: $14.95 -
EASTERN MOTORCYCLE PARTS 4-Speed Gear Spacers - XL A-35865-SET
EASTERN MOTORCYCLE PARTS
$17.30Gear spacers for 2-stroke ATVsDS194189- SKU:
- DS194189
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 6 PACK
- TYPE:
- 1ST GEAR
- PRODUCT NAME:
- SPACER
$17.30 -
EASTERN MOTORCYCLE PARTS Breather Washer Set A-25313-SET
EASTERN MOTORCYCLE PARTS
$16.95Includes one each of the following size washers: .110", .115", .120" and .125" (.195" i.d. hole), Made in the U.S.A., Use only steel washers with steel breather valves. Do not intermix steel and plastic parts.09500364- SKU:
- 09500364
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- WASHER KIT
- TYPE:
- BREATHER VALVE
- UNITS:
- KIT
$16.95 -
Wiseco Circlip for Harley-Davidson 1984-1998 FLHTC Electra Glide Classic W5731
WISECO
$3.00Experience unparalleled performance with Wiseco's high-performance piston rings, engineered for the ultimate in strength and precision. These rings are perfect for high-performance engines, ensuring optimal efficiency and reliability even in extreme...W5731- SKU:
- W5731
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- CIRCLIP
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- APPLICATION:
- PISTON
$3.00
