Harley Drivetrain
Harley Bike Drivetrain Parts at JJ Motorsports
Upgrade your Harley's drivetrain for smoother power delivery and reliability with components from JJ Motorsports. Our selection includes transmission mounting plates, offset sprockets, mechanical reverse kits, starter spacers, pulley spacers, and primary covers designed for heavy-duty use, easy bolt-in installation, and enhanced performance. Compatible with Big Twins, Softail, Dyna, and more, these parts feature chrome finishes, billet aluminum, and CNC-machined steel for corrosion resistance and custom fitment.
Shop trusted brands like Paughco for primary covers and PBI for sprockets. Explore related categories such as Harley engine parts for rebuilds or Harley suspension for balanced setups.
Top Harley Drivetrain Products
- PAUGHCO Transmission Plate - OE Type 4-Speed 218 – Heavy-duty steel for Big Twins with 4-speed transmissions.
- PBI Offset Transmission Sprocket - 22-Tooth 281-22 – CNC-machined chromoly steel with 0.750" offset for 530 chains.
- MOTOR TRIKE Mechanical Reverse Kit MTTR-0025 – Lightweight aluminum with electronic cut-off for easy parking.
- TERRY COMPONENTS Starter Spacer 779000 – Billet aluminum, 1-1/2" thick for longer starters.
- PINGEL Rear Pulley Spacer 62051 – Billet aluminum for wider tires up to 142mm.
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
-
EASTERN MOTORCYCLE PARTS Bearing Spacer - 11599/A 40-0160
EASTERN MOTORCYCLE PARTS
$18.95Replacement spacer for output gear assembly in 6-speed transmissions11060075- SKU:
- 11060075
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- MATERIAL:
- STEEL
- TRANSMISSION TYPE:
- 6 SPEED
- PRODUCT NAME:
- SPACER
- UNITS:
- EACH
$18.95 -
EASTERN MOTORCYCLE PARTS Bearing - 8042 40-0310
EASTERN MOTORCYCLE PARTS
$33.95High quality bearings for 6-speed transmissions11060076- SKU:
- 11060076
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
$33.95 -
EASTERN MOTORCYCLE PARTS Transmission Bearing - 8026 40-0315
EASTERN MOTORCYCLE PARTS
$45.95High quality bearings for 6-speed transmissions11060077- SKU:
- 11060077
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- UNITS:
- 4 PACK
- TYPE:
- COUNTERSHAFT
$45.95 -
EASTERN MOTORCYCLE PARTS Bearing - 8963 40-0325
EASTERN MOTORCYCLE PARTS
$31.95High quality bearings for 6-speed transmissions11060078- SKU:
- 11060078
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- BEARING
- STYLE:
- LEFT SIDE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$31.95 -
EASTERN MOTORCYCLE PARTS Mainshaft - Bearing 40-0345
EASTERN MOTORCYCLE PARTS
$10.95Mainshaft component for 5-speed11060079- SKU:
- 11060079
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- NEEDLE BEARING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
EASTERN MOTORCYCLE PARTS Main Drive Gear 42-0100
EASTERN MOTORCYCLE PARTS
$9.40High-quality OEM replacement components11060081- SKU:
- 11060081
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- RETAINING RING
- TRANSMISSION TYPE:
- 6 SPEED
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- STYLE:
- OEM REPLACEMENT
- UNITS:
- 10 PACK
$9.40 -
EASTERN MOTORCYCLE PARTS Main Drive Gear A-10991
EASTERN MOTORCYCLE PARTS
$9.40High-quality OEM replacement components11060082- SKU:
- 11060082
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- RETAINING RING
- TRANSMISSION TYPE:
- 6 SPEED
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- STYLE:
- OEM REPLACEMENT
- UNITS:
- 10 PACK
$9.40 -
EASTERN MOTORCYCLE PARTS Sprocket Shaft Nut - 35211-91 A-35211-91
EASTERN MOTORCYCLE PARTS
$20.95High-quality OEM replacement part, Made in the U.S.A.11060083- SKU:
- 11060083
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- SPROCKET
- RIDING STYLE:
- STREET
- STYLE:
- OEM REPLACEMENT
- PRODUCT NAME:
- NUT
- UNITS:
- EACH
$20.95 -
EASTERN MOTORCYCLE PARTS Shifter Shaft - 34628-54A A-34628-54A
EASTERN MOTORCYCLE PARTS
$39.95Meets or exceeds OEM standards, Includes the ball11060086- SKU:
- 11060086
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- STYLE:
- OEM REPLACEMENT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SHIFT LEVER SHAFT
$39.95 -
EASTERN MOTORCYCLE PARTS Shifter Shaft Spring A-34087-79A
EASTERN MOTORCYCLE PARTS
$16.10Top-quality OEM replacement, Made in the U.S.A.11060048- SKU:
- 11060048
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- SHIFTER SHAFT
- RIDING STYLE:
- STREET
- STYLE:
- OEM REPLACEMENT
- PRODUCT NAME:
- SPRING
- UNITS:
- 5 PACK
$16.10 -
EASTERN MOTORCYCLE PARTS Shifter Lever Spring - 34083-79 A-34083-79
EASTERN MOTORCYCLE PARTS
$17.50Top-quality OEM replacement component, Made in the U.S.A.11060049- SKU:
- 11060049
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SPRING
- TYPE:
- PAWL SPRING
- STYLE:
- OEM REPLACEMENT
$17.50 -
EASTERN MOTORCYCLE PARTS Shifter Lever Spring - 34977-00A A-34977-00A
EASTERN MOTORCYCLE PARTS
$8.10Top-quality OEM replacement component, Made in the U.S.A.11060050- SKU:
- 11060050
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- STYLE:
- OEM REPLACEMENT
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- STREET
- TYPE:
- PAWL SPRING
$8.10 -
EASTERN MOTORCYCLE PARTS Mainshaft Bearing A-35030-89
EASTERN MOTORCYCLE PARTS
$31.95Mainshaft component for 5-speed11060182- SKU:
- 11060182
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- STYLE:
- TRAP DOOR
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
$31.95 -
EASTERN MOTORCYCLE PARTS Spacer Countershaft - 2nd Gear 44-0512
EASTERN MOTORCYCLE PARTS
$5.00Countershaft component for 5-speed11060187- SKU:
- 11060187
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SPACER
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- TYPE:
- SECOND GEAR
$5.00 -
On Sale
EASTERN MOTORCYCLE PARTS Main Drive Bearing - 8956 44-0516
EASTERN MOTORCYCLE PARTS
MSRP: $73.95Now: $47.00Was: $73.95OEM or better quality bearing, Made in the U.S.A.11060188- SKU:
- 11060188
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING
- TRANSMISSION TYPE:
- 5 SPEED
- UNITS:
- EACH
MSRP: $73.95Now: $47.00Was: $73.95 -
EASTERN MOTORCYCLE PARTS Countershaft Gear - 35717-74 W-14-174
EASTERN MOTORCYCLE PARTS
$72.95Sold individually unless noted11060190- SKU:
- 11060190
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- TOOTH COUNT:
- 24
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GEAR
- TYPE:
- COUNTERSHAFT
- TYPE:
- FIRST GEAR
- TRANSMISSION TYPE:
- 4 SPEED
$72.95 -
EASTERN MOTORCYCLE PARTS Bearing - 8980 A-8980
EASTERN MOTORCYCLE PARTS
$26.95High-quality replacement component, Fits OEM and most aftermarket inner primaries11200344- SKU:
- 11200344
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY MAINSHAFT
- UNITS:
- EACH
$26.95 -
EASTERN MOTORCYCLE PARTS Retaining Rings - Release Finger A-11000
EASTERN MOTORCYCLE PARTS
$2.70Retaining rings for clutch components11320270- SKU:
- 11320270
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- TYPE:
- RELEASE FINGER
- PRODUCT NAME:
- RETAINING RING
$2.70 -
EASTERN MOTORCYCLE PARTS Lock Tabs - Clutch Ramp A-25448-84
EASTERN MOTORCYCLE PARTS
$10.70Replacement lock tab washers11320275- SKU:
- 11320275
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH RAMP
- PRODUCT NAME:
- LOCK TAB
- UNITS:
- 10 PACK
$10.70Qty in Cart: 0Quantity:Price:$10.70Subtotal: -
EASTERN MOTORCYCLE PARTS Retaining Rings - Clutch Bearing A-37904-90
EASTERN MOTORCYCLE PARTS
$14.80Retaining rings for clutch components11320280- SKU:
- 11320280
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- RETAINING RING
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH BEARING
$14.80
