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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ALLOY ART Inner Primary Plug - FXD/FXR MPP-1
ALLOY ART
$35.95Used when adding forward controls to FXD(92-05) & FXR(82-00) models and eliminating the mid shifter shaft, Plugs holes in inner primary cover for a finished look, Anodized billet aluminum, complete with O-rings, bolt and locking tab, Made in the U.S.A.11070073- SKU:
- 11070073
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- PLUG
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
$35.95 -
GARDNER-WESTCOTT Transmission Oil Fill Plug C-80-14
GARDNER-WESTCOTT
$21.95Show-chromed Allen-head plug includes oil level dipstick and O-ring, Made in the U.S.A.DS193860- SKU:
- DS193860
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- FILL PLUG
- TRANSMISSION TYPE:
- 5-SPEED
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$21.95 -
COVINGTONS Derby Cover - Black - 5 Hole C1875-B
COVINGTONS
$241.95Made of CNC-machined billet aluminum, Includes mounting hardware, Ripper style with black finish, Made in the U.S.A., '07-'18 applications (except '18 FLSB, '16-'18 Dressers, '15 FLHTCUL/FLHTKL) will require the use of gasket PART #s 0934-0289 or...11070683- SKU:
- 11070683
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- STYLE:
- RIPPER
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$241.95 -
COVINGTONS Derby Cover - Black - Dimpled C1075-B
COVINGTONS
$241.95CNC-machined from billet aluminum, Includes mounting hardware, Made in the U.S.A.11070490- SKU:
- 11070490
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- GLOSS
- STYLE:
- DIMPLED
$241.95 -
COVINGTONS Transmission Cover C1365-B
COVINGTONS
$381.95CNC-machined from billet aluminum, Direct bolt-on replacement for the stock cover, Made in the U.S.A.11050255- SKU:
- 11050255
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- STYLE:
- DIMPLED
- UNITS:
- EACH
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- TRANSMISSION TYPE:
- HYDRAULIC
$381.95 -
COVINGTONS Transmission Cover C1372-C
COVINGTONS
$317.95CNC machined from billet aluminum, Direct bolt-on replacement for the stock cover, Made in the U.S.A.11050206- SKU:
- 11050206
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- COVER
- TRANSMISSION TYPE:
- MECHANICAL
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- STYLE:
- SMOOTH
- COLOR/FINISH:
- CHROME
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION TOP
$317.95 -
COVINGTONS Transmission Cover C1371-C
COVINGTONS
$317.95CNC machined from billet aluminum, Direct bolt-on replacement for the stock cover, Made in the U.S.A.11050145- SKU:
- 11050145
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MOUNTING STYLE:
- 6 HOLE
- STYLE:
- DIMPLED
- TYPE:
- TRANSMISSION TOP
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- TRANSMISSION TYPE:
- 6-SPEED
$317.95 -
COVINGTONS Derby Cover - Black - Machine Head C1074-B
COVINGTONS
$216.95CNC-machined from billet aluminum, Includes mounting hardware, Made in the U.S.A.11070243- SKU:
- 11070243
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- UNITS:
- EACH
- STYLE:
- MACHINE HEAD
- COLOR/FINISH:
- GLOSS
- RIDING STYLE:
- STREET
$216.95 -
COVINGTONS Derby Cover - Chrome - Machine Head C1074-C
COVINGTONS
$216.95CNC-machined from billet aluminum, Includes mounting hardware, Made in the U.S.A.11070244- SKU:
- 11070244
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- DERBY
- UNITS:
- EACH
- STYLE:
- MACHINE HEAD
$216.95 -
COVINGTONS Derby Cover - Diamond Edge - Machine Head C1074-D
COVINGTONS
$355.95CNC-machined from billet aluminum, Includes mounting hardware, Made in the U.S.A.11070245- SKU:
- 11070245
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- COLOR/FINISH:
- BLACK
- STYLE:
- MACHINE HEAD
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- RIDING STYLE:
- STREET
$355.95 -
COVINGTONS Derby Cover - Black - Dimpled C1073-B
COVINGTONS
$216.95CNC-machined from billet aluminum, Includes mounting hardware, Made in the U.S.A.11070311- SKU:
- 11070311
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- RIDING STYLE:
- STREET
- STYLE:
- DIMPLED
$216.95 -
Belt Drives Ltd 3" Offset Pulley 48 Tooth for 1982-1994 Harley FXR 48-OFP
BELT DRIVES LTD.
$197.95This high-quality 48-tooth offset pulley is designed specifically for 3" systems, ensuring optimal belt alignment for your motor setup. Crafted in the U.S.A., this pulley offers durability and precision, making it an essential component for efficient...DS360422- SKU:
- DS360422
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- PRODUCT NAME:
- PULLEY
- RIDING STYLE:
- STREET
- TYPE:
- MOTOR SHAFT
$197.95 -
Belt Drives Ltd Offset Spacer 1/2" for Harley-Davidson 1985-2006 IN-500
BELT DRIVES LTD.
$103.95This high-quality offset spacer is designed to ensure precise alignment of your motor pulley, enhancing the efficiency of your belt drive system. Manufactured in the U.S.A., it comes complete with a motor sprocket nut and mounting screws for...DS360425- SKU:
- DS360425
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- PRODUCT NAME:
- SPACER INSERT
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
$103.95 -
Belt Drives Ltd 3/4" Offset Spacer Insert for Harley-Davidson 1996-2006 FLHTCI Electra Glide Classic IN-750
BELT DRIVES LTD.
$103.95This high-quality offset spacer is designed to ensure optimal alignment of your motor pulleys, enhancing the efficiency of your belt drive system. Manufactured in the U.S.A., it includes a durable motor sprocket nut and mounting screws for easy...DS360426- SKU:
- DS360426
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- PRODUCT NAME:
- SPACER INSERT
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
$103.95 -
Belt Drives Ltd. 1" Offset Spacer with Screws and Nut for Harley-Davidson 1985-2006 FLHRS Road King Custom IN-1000
BELT DRIVES LTD.
$103.95This high-quality offset spacer is designed to ensure precise alignment of your motor pulley, enhancing the efficiency of your belt drive system. Manufactured in the USA, it includes all necessary components for easy installation, making it an essential...DS360427- SKU:
- DS360427
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- TYPE:
- PULLEY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- SPACER INSERT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$103.95 -
Belt Drives Ltd Offset Spacer 1-1/4" for Harley-Davidson FLH 1985-2006 IN-1250
BELT DRIVES LTD.
$103.95Enhance your motor pulley alignment with the BELT DRIVES LTD. Offset Spacer. Designed for precision and ease of use, this component ensures optimal performance by allowing for effective adjustments. Manufactured in the U.S.A., it comes complete with a...DS360428- SKU:
- DS360428
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- SPACER INSERT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- PULLEY
$103.95 -
Belt Drives Ltd 130 Tooth 8mm x 41mm Primary Drive Belt BDL-130K
BELT DRIVES LTD.
$155.95Upgrade your BDL primary drive system with the BDL-130K Replacement Belt, designed for optimal performance and durability. This high-quality belt ensures smooth operation and longevity, making it an essential component for your drive setup. Experience...DS360430- SKU:
- DS360430
- Availability:
- Ships Same Business Day
- Weight:
- 0.52 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 130
- UNITS:
- EACH
- STYLE:
- RIBBED
- PRODUCT NAME:
- DRIVE BELT
- TYPE:
- PRIMARY
- WIDTH IMPERIAL:
- 1-5/8'
$155.95 -
Belt Drives Ltd 8mm Primary Drive Belt 138 Teeth for 1970-1983 Harley-Davidson Touring BDL-138-38K
BELT DRIVES LTD.
$150.95The BDL-138-38K Replacement Belt from Belt Drives Ltd. is engineered for optimal performance in BDL primary drives. Designed for durability and precision, this belt ensures smooth operation and enhances the longevity of your drive system. ...23021252- SKU:
- 23021252
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- DRIVE BELT
- WIDTH IMPERIAL:
- 1-1/2'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- STYLE:
- RIBBED
- TOOTH COUNT:
- 138
- TYPE:
- PRIMARY
$150.95 -
Belt Drives Ltd 3" 8mm Belt Drive with Clutch for 1965-1984 Harley-Davidson Shovelhead FLH Electra Glide EV-76-47S
BELT DRIVES LTD.
$1,175.95Transform your ride with the BELT DRIVES LTD. 3"/8mm Belt Drive featuring a clutch system designed for performance and durability. This kit provides a seamless installation with all necessary components, ensuring a smooth and efficient power transfer...23021263- SKU:
- 23021263
- Availability:
- Ships Same Business Day
- Weight:
- 18.50 LBS
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- MATERIAL:
- STEEL
- WIDTH IMPERIAL:
- 3'
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
$1,175.95 -
Belt Drives Ltd 11mm Belt Drive Kit for Harley-Davidson FLH Electra Glide 1979-1983 47-31SE-RB
BELT DRIVES LTD.
$693.95Upgrade your ride with our premium 11mm Belt Drive designed specifically for 79-E84 models. Crafted from durable hard anodized aluminum, this belt drive ensures longevity and optimal performance. Please note that the inner clutch hub and plates are sold...23025001- SKU:
- 23025001
- Availability:
- Ships Same Business Day
- Weight:
- 11.40 LBS
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 1-1/2'
$693.95Qty in Cart: 0Quantity:Price:$693.95Subtotal:
