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
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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 -
EASTERN MOTORCYCLE PARTS Retaining Rings - Clutch Bearing A-37905-00
EASTERN MOTORCYCLE PARTS
$17.50Retaining rings for clutch components11320281- SKU:
- 11320281
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- RETAINING RING
- TYPE:
- CLUTCH BEARING
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$17.50 -
EASTERN MOTORCYCLE PARTS Retaining Rings - Pressure Plate A-37908-90
EASTERN MOTORCYCLE PARTS
$17.50Retaining rings for clutch components11320282- SKU:
- 11320282
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- PRESSURE PLATE
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- RETAINING RING
- UNITS:
- 5 PACK
$17.50 -
EASTERN MOTORCYCLE PARTS Retaining Rings - Pressure Plate A-37909-90
EASTERN MOTORCYCLE PARTS
$17.50Retaining rings for clutch components11320283- SKU:
- 11320283
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- RETAINING RING
- TYPE:
- PRESSURE PLATE
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
$17.50 -
EASTERN MOTORCYCLE PARTS Retaining Rings - Clutch Ramp A-10998
EASTERN MOTORCYCLE PARTS
$6.70Retaining rings for clutch components11320286- SKU:
- 11320286
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- RETAINING RING
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH RAMP
$6.70 -
EASTERN MOTORCYCLE PARTS Push Rod Bearing - 37312-75 A-37312-75
EASTERN MOTORCYCLE PARTS
$10.95Made in the U.S.A.11320568- SKU:
- 11320568
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH PUSHROD
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
$10.95 -
EASTERN MOTORCYCLE PARTS Push Rod Kit J-1-159
EASTERN MOTORCYCLE PARTS
$70.95Kits include all four pushrods, Made in the U.S.A.11320570- SKU:
- 11320570
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- TYPE:
- CLUTCH
- UNITS:
- KIT
- PRODUCT NAME:
- PUSHROD KIT
- RIDING STYLE:
- STREET
$70.95 -
EASTERN MOTORCYCLE PARTS Pressure Plate - 37901-84A A-37901-84A
EASTERN MOTORCYCLE PARTS
$145.95High-quality replacement component, Made in the U.S.A11320571- SKU:
- 11320571
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- PRESSURE PLATE
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- UNITS:
- EACH
$145.95 -
EASTERN MOTORCYCLE PARTS Release Plate - 37871-41 A-37871-41
EASTERN MOTORCYCLE PARTS
$57.95High-quality replacement component, Made in the U.S.A.11320572- SKU:
- 11320572
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- PRODUCT NAME:
- RELEASE DISC
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$57.95 -
EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacers - 0.030" A-35852-84
EASTERN MOTORCYCLE PARTS
$6.70The only way to properly space/align the front motor sprocket or belt drive pulley, Made in the U.S.A.DS196153- SKU:
- DS196153
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- SPROCKET
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
$6.70 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - Clutch Side A-36048-36
EASTERN MOTORCYCLE PARTS
$28.95Countershaft component for 4-speedDS196171- SKU:
- DS196171
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH SIDE
- UNITS:
- EACH
$28.95 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - Clutch Side A-36048-76A
EASTERN MOTORCYCLE PARTS
$28.95Countershaft component for 4-speedDS196172- SKU:
- DS196172
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH SIDE
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
$28.95 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - Starter Side A-36046-36
EASTERN MOTORCYCLE PARTS
$28.95Countershaft component for 4-speedDS196173- SKU:
- DS196173
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- STARTER SIDE
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$28.95 -
EASTERN MOTORCYCLE PARTS Countershaft Bushing - Starter Side A-36045-76
EASTERN MOTORCYCLE PARTS
$28.95Countershaft component for 4-speedDS196174- SKU:
- DS196174
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- STARTER SIDE
$28.95 -
EASTERN MOTORCYCLE PARTS Main Drive Gear - Spacer A-35070-77
EASTERN MOTORCYCLE PARTS
$41.95Made in the U.S.A.DS196234- SKU:
- DS196234
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- EACH
- TYPE:
- MAIN DRIVE GEAR
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
$41.95 -
EASTERN MOTORCYCLE PARTS Main Drive Gear - Spacer A-35070-80
EASTERN MOTORCYCLE PARTS
$41.95Made in the U.S.A.DS196235- SKU:
- DS196235
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- PRODUCT NAME:
- SPACER
- UNITS:
- EACH
$41.95 -
EASTERN MOTORCYCLE PARTS Main Drive Gear - Spacer A-35070-84
EASTERN MOTORCYCLE PARTS
$37.95Made in the U.S.A.DS196237- SKU:
- DS196237
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- UNITS:
- EACH
$37.95 -
EASTERN MOTORCYCLE PARTS Main Drive Gear - Spacer A-35171-37
EASTERN MOTORCYCLE PARTS
$39.95Made in the U.S.A.DS196238- SKU:
- DS196238
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE GEAR
- UNITS:
- EACH
$39.95 -
EASTERN MOTORCYCLE PARTS Thrust Washer A-6003
EASTERN MOTORCYCLE PARTS
$8.10Sold in pack of 5DS194280- SKU:
- DS194280
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- TRANSMISSION TYPE:
- 5 SPEED
- TYPE:
- COUNTERSHAFT
- PRODUCT NAME:
- THRUST WASHER
- TYPE:
- MAINSHAFT
$8.10 -
EASTERN MOTORCYCLE PARTS Bearing Housing A-35100-36
EASTERN MOTORCYCLE PARTS
$57.95Made in the U.S.A.DS194282- SKU:
- DS194282
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- MAINSHAFT
- PRODUCT NAME:
- HOUSING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- BEARING
$57.95
