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 Oil Pump Pinion Gear - Big Twin A-26349-73A
EASTERN MOTORCYCLE PARTS
$49.95Made in the U.S.A.DS194007- SKU:
- DS194007
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- DRIVE GEAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- OIL PUMP
$49.95 -
EASTERN MOTORCYCLE PARTS Starter Gear W-14-219
EASTERN MOTORCYCLE PARTS
$55.95High-quality steel construction, 14-tooth design21100457- SKU:
- 21100457
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- KICKSTART MAINSHAFT
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STEEL
$55.95 -
EASTERN MOTORCYCLE PARTS Chain Tensioner Lock Tab A-39996-65
EASTERN MOTORCYCLE PARTS
$14.80Made in the U.S.A.11200189- SKU:
- 11200189
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- LOCK TAB
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY CHAIN
- TYPE:
- ADJUSTER PLATE
$14.80 -
EASTERN MOTORCYCLE PARTS Shifter Bushings A-34076-02A
EASTERN MOTORCYCLE PARTS
$16.10OE replacement, Made in the U.S.A.11100049- SKU:
- 11100049
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$16.10 -
EASTERN MOTORCYCLE PARTS Shifter Shaft A-34628-86
EASTERN MOTORCYCLE PARTS
$68.95Meets or exceeds OEM standards11100050- SKU:
- 11100050
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIFT SHAFT
- UNITS:
- EACH
$68.95 -
EASTERN MOTORCYCLE PARTS Bearing A-9837
EASTERN MOTORCYCLE PARTS
$8.95High-quality OE replacement11100051- SKU:
- 11100051
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- SHIFTER DRUM
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
$8.95 -
EASTERN MOTORCYCLE PARTS Starter Bushing 42-0154
EASTERN MOTORCYCLE PARTS
$22.95Sold each11120068- SKU:
- 11120068
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- BUSHING KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$22.95 -
EASTERN MOTORCYCLE PARTS Starter Ring Gear A-33163-65B
EASTERN MOTORCYCLE PARTS
$57.95Replacement 66-tooth weld-on style, 71/8" i.d.11120039- SKU:
- 11120039
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- PRODUCT NAME:
- GEAR
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- STARTER RING
$57.95 -
EASTERN MOTORCYCLE PARTS Ratchet Plate Rivets A-8215
EASTERN MOTORCYCLE PARTS
$2.95Made in the U.S.A.11120040- SKU:
- 11120040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- RIVET
- TYPE:
- KICKSTART RATCHET PLATE
- UNITS:
- 12 PACK
$2.95 -
EASTERN MOTORCYCLE PARTS Kick Pedal Rubber K-2-789
EASTERN MOTORCYCLE PARTS
$12.95Quality OEM replacement11120042- SKU:
- 11120042
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- KICK PEDAL
- COLOR/FINISH:
- BLACK
- MATERIAL:
- RUBBER
$12.95 -
EASTERN MOTORCYCLE PARTS Motor Sprocket Shaft Spacers 40-0149
EASTERN MOTORCYCLE PARTS
$39.95Made in the U.S.A.11060074- SKU:
- 11060074
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
- TYPE:
- SPROCKET SHAFT
- UNITS:
- EACH
$39.95 -
EASTERN MOTORCYCLE PARTS Retaining Rings - Clutch Bearing A-37905-90
EASTERN MOTORCYCLE PARTS
$16.10Retaining rings for clutch components11320284- SKU:
- 11320284
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- CLUTCH BEARING
- PRODUCT NAME:
- RETAINING RING
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
$16.10 -
EASTERN MOTORCYCLE PARTS Mainshafter - Spacer A-33344-94
EASTERN MOTORCYCLE PARTS
$52.95Mainshaft component for 5-speedDS194281- SKU:
- DS194281
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPACER
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- STYLE:
- SPROCKET
$52.95 -
EASTERN MOTORCYCLE PARTS Bearing - 37906-11 A-37906-11
EASTERN MOTORCYCLE PARTS
$134.95High-quality replacement component11320919- SKU:
- 11320919
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH HUB
- UNITS:
- EACH
$134.95 -
EASTERN MOTORCYCLE PARTS Bearing Inner Race A-34091-85
EASTERN MOTORCYCLE PARTS
$53.95Mainshaft component for 5-speedDS194053- SKU:
- DS194053
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- TYPE:
- FIFTH GEAR
- PRODUCT NAME:
- BEARING RACE
- STYLE:
- INNER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$53.95 -
EASTERN MOTORCYCLE PARTS Clutch Hub Keys A-37523-15
EASTERN MOTORCYCLE PARTS
$24.20Made in the U.S.A.DS194360- SKU:
- DS194360
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- PRODUCT NAME:
- KEY
- UNITS:
- 10 PACK
- TYPE:
- CLUTCH HUB
$24.20 -
EASTERN MOTORCYCLE PARTS Bearing - 8992A A-8992A
EASTERN MOTORCYCLE PARTS
$26.95High-quality replacement OEM components11060070- SKU:
- 11060070
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- STYLE:
- OEM REPLACEMENT
$26.95 -
EASTERN MOTORCYCLE PARTS Mainshaft - Ball Bearing A-8996
EASTERN MOTORCYCLE PARTS
$43.95Mainshaft component for 5-speed11060071- SKU:
- 11060071
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- STYLE:
- CLUTCH SIDE
- UNITS:
- EACH
- PRODUCT NAME:
- BALL BEARING
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
$43.95 -
EASTERN MOTORCYCLE PARTS Clutch Push Rod - 37092-06 A-37092-06
EASTERN MOTORCYCLE PARTS
$26.95Individual component, Made in the U.S.A.11320569- SKU:
- 11320569
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- CLUTCH
- PRODUCT NAME:
- PUSHROD CENTER
- LENGTH IMPERIAL:
- 11.700'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$26.95 -
EASTERN MOTORCYCLE PARTS Release Finger - 37084-79 A-37084-79
EASTERN MOTORCYCLE PARTS
$31.95High-quality, precision made OEM replacement component, For use with 5-speed transmissions11060183- SKU:
- 11060183
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STEEL
- STYLE:
- OEM REPLACEMENT
- TRANSMISSION TYPE:
- 5 SPEED
- TYPE:
- CLUTCH RELEASE FINGER
- PRODUCT NAME:
- RELEASE FINGER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$31.95
