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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PERFORMANCE MACHINE (PM) Transmission Cover - Platinum Cut¢â€žÂ¢ - Scallop 0203-2018-BMP
PERFORMANCE MACHINE (PM)
$333.95CNC machined from billet aluminum, Designed as a direct replacement for OEM transmission top cover, Easy bolt-on installation, Hardware included, Made in the U.S.A.11050220- SKU:
- 11050220
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- COLOR/FINISH:
- PLATINUM CUT
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MODEL:
- SCALLOP
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
$333.95 -
PERFORMANCE MACHINE (PM) Transmission Cover - Chrome - Scallop 0203-2018-CH
PERFORMANCE MACHINE (PM)
$333.95CNC machined from billet aluminum, Designed as a direct replacement for OEM transmission top cover, Easy bolt-on installation, Hardware included, Made in the U.S.A.11050221- SKU:
- 11050221
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- MATERIAL:
- ALUMINUM
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MODEL:
- SCALLOP
- TYPE:
- TRANSMISSION
$333.95 -
PERFORMANCE MACHINE (PM) Transmission Cover - Chrome 0203-2020M-CH
PERFORMANCE MACHINE (PM)
$331.95CNC-machined from billet aluminum, Aluminum lens bezel eliminates cracking, Designed as a direct replacement for OEM transmission top cover, UV, abrasion, hazing, and yellowing resistant polycarbonate lens, Easy bolt-on installation, Chrome hardware and...11050252- SKU:
- 11050252
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$331.95 -
PERFORMANCE MACHINE (PM) Transmission Cover - Contrast Cut¢â€žÂ¢ 0203-2020M-BM
PERFORMANCE MACHINE (PM)
$331.95CNC-machined from billet aluminum, Aluminum lens bezel eliminates cracking, Designed as a direct replacement for OEM transmission top cover, UV, abrasion, hazing, and yellowing resistant polycarbonate lens, Easy bolt-on installation, Chrome hardware and...11050253- SKU:
- 11050253
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- COLOR/FINISH:
- CONTRAST CUT™
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$331.95 -
PERFORMANCE MACHINE (PM) Transmission Cover - Black Ops¢â€žÂ¢ 0203-2020M-SMB
PERFORMANCE MACHINE (PM)
$331.95CNC-machined from billet aluminum, Aluminum lens bezel eliminates cracking, Designed as a direct replacement for OEM transmission top cover, UV, abrasion, hazing, and yellowing resistant polycarbonate lens, Easy bolt-on installation, Chrome hardware and...11050254- SKU:
- 11050254
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK OPS™
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- TYPE:
- TRANSMISSION
$331.95 -
PERFORMANCE MACHINE (PM) Derby Cover 0177-2058-BM
PERFORMANCE MACHINE (PM)
$239.95Complete matching line, Direct replacement for stock derby covers on OEM primaries, Machined Performance Machine logo, Hardware and gasket included, Made in the U.S.A.11070559- SKU:
- 11070559
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- COLOR/FINISH:
- BLACK
- MOUNTING STYLE:
- 5 HOLE
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- STYLE:
- SCALLOP
- TYPE:
- DERBY
- COLOR/FINISH:
- CONTRAST CUT™
$239.95Qty in Cart: 0Quantity:Price:$239.95Subtotal: -
PERFORMANCE MACHINE (PM) Derby Cover 0177-2058-SMB
PERFORMANCE MACHINE (PM)
$217.95Direct replacement for stock derby covers on OEM primaries, Scallop design, Hardware and gasket included, Made in the U.S.A.11070681- SKU:
- 11070681
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK OPS™
$217.95 -
PERFORMANCE MACHINE (PM) Derby Cover - Contrast Cut¢â€žÂ¢ 0177-2075M-BM
PERFORMANCE MACHINE (PM)
$191.95Utilizes OEM O-ring gasket, Direct replacement for OE covers and come with chrome hardware, Manufactured from billet aluminum11070667- SKU:
- 11070667
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- STYLE:
- SCALLOP
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- CONTRAST CUT™
- TYPE:
- DERBY
$191.95 -
PERFORMANCE MACHINE (PM) Derby Cover - Chrome 0177-2075M-CH
PERFORMANCE MACHINE (PM)
$191.95Utilizes OEM O-ring gasket, Direct replacement for OE covers and come with chrome hardware, Manufactured from billet aluminum11070668- SKU:
- 11070668
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- STYLE:
- SCALLOP
- TYPE:
- DERBY
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$191.95 -
PERFORMANCE MACHINE (PM) Derby Cover - Black Ops¢â€žÂ¢ 0177-2075M-SMB
PERFORMANCE MACHINE (PM)
$191.95Utilizes OEM O-ring gasket, Direct replacement for OE covers and come with chrome hardware, Manufactured from billet aluminum11070669- SKU:
- 11070669
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- STYLE:
- SCALLOP
- TYPE:
- DERBY
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK OPS™
$191.95 -
DRAG SPECIALTIES Lower Belt Guard - 99 FXD - Chrome 105123BXLB2
DRAG SPECIALTIES
$89.39Simple bolt-on installation19025123- SKU:
- 19025123
- Availability:
- Ships Same Business Day
- Weight:
- 1.22 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GUARD
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- LOWER
- TYPE:
- REAR BELT
$89.39 -
DRAG SPECIALTIES Inner Primary Bushing 292241
DRAG SPECIALTIES
$19.52Quality replacement steel bushings21100035- SKU:
- 21100035
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- MATERIAL:
- STEEL
- UNITS:
- EACH
$19.52 -
DRAG SPECIALTIES Inner Primary Bushing 292240
DRAG SPECIALTIES
$19.52Quality replacement steel bushings21100036- SKU:
- 21100036
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- BUSHING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
$19.52 -
DRAG SPECIALTIES Outer Primary Bushing - '94-'06 292243
DRAG SPECIALTIES
$14.37Quality replacement steel bushings21100037- SKU:
- 21100037
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BUSHING
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- STARTER SHAFT
$14.37 -
DRAG SPECIALTIES Outer Primary Bushing - '89-'93 292242
DRAG SPECIALTIES
$14.37Quality replacement steel bushings21100038- SKU:
- 21100038
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- STARTER SHAFT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- BUSHING
- UNITS:
- EACH
$14.37 -
DRAG SPECIALTIES One-Piece Sprocket Kit 191205
DRAG SPECIALTIES
$192.56Solid steel one-piece design, 34-tooth sprocket, Kit is spring-less and much quieter than the stock or diaphragm spring-style compensators, Eliminates the need for a complete compensator assembly, Kit includes washer, spacer and instructions, Retain and...11200413- SKU:
- 11200413
- Availability:
- Ships Same Business Day
- Weight:
- 4.15 LBS
- PRODUCT NAME:
- SPROCKET KIT
- TYPE:
- PRIMARY
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
$192.56 -
DRAG SPECIALTIES Sprocket Kit 241336
DRAG SPECIALTIES
$406.80DRAG SPECIALTIES Sprocket Kit11200435- SKU:
- 11200435
- Availability:
- Ships Same Business Day
- Weight:
- 10.71 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- SPROCKET KIT
- RIDING STYLE:
- STREET
$406.80Qty in Cart: 0Quantity:Price:$406.80Subtotal: -
DRAG SPECIALTIES Compensating Sprocket Shaft Extension - +1" 346232
DRAG SPECIALTIES
$76.17Hardened alloy steel extension has been precision ground, For use with OEM or most aftermarket compensating sprockets, Used when offsetting transmission in wide tire applications11200001- SKU:
- 11200001
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MATERIAL:
- STEEL
- SIZE IMPERIAL:
- +1'
- TYPE:
- COMPENSATING SPROCKET
- PRODUCT NAME:
- SHAFT EXTENSION
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$76.17Qty in Cart: 0Quantity:Price:$76.17Subtotal: -
DRAG SPECIALTIES Primary Drive Kit 210186
DRAG SPECIALTIES
$926.95Kits include compensating sprocket assembly, chain adjuster assembly and complete clutch assembly with aramid friction plates, Primary chains sold separately11200076- SKU:
- 11200076
- Availability:
- Ships Same Business Day
- Weight:
- 22.75 LBS
- TOOTH COUNT:
- 25
- PRODUCT NAME:
- PRIMARY CHAIN DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$926.95 -
DRAG SPECIALTIES Primary Drive Kit 210184
DRAG SPECIALTIES
$531.43Kits include compensating sprocket assembly, chain adjuster assembly and complete clutch assembly with aramid friction plates, Primary chains sold separately11200078- SKU:
- 11200078
- Availability:
- Ships Same Business Day
- Weight:
- 21.75 LBS
- PRODUCT NAME:
- PRIMARY CHAIN DRIVE KIT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 37
- UNITS:
- KIT
$531.43
