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
-
PAUGHCO Inspection Cover B758
PAUGHCO
$32.95Fit stock H-D's as well as Paughco outer primary covers, Made in the U.S.A.11070196- SKU:
- 11070196
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MOUNTING STYLE:
- 2 HOLE
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- INSPECTION
$32.95 -
PAUGHCO Derby Cover 757
PAUGHCO
$69.95Fit stock H-D's as well as Paughco outer primary covers, Made in the U.S.A.11070197- SKU:
- 11070197
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MOUNTING STYLE:
- 8 HOLE
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- UNITS:
- EACH
$69.95 -
PAUGHCO Inspection Cover 758
PAUGHCO
$28.95Fit stock H-D's as well as Paughco outer primary covers, Made in the U.S.A.11070198- SKU:
- 11070198
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- MOUNTING STYLE:
- 2 HOLE
- TYPE:
- INSPECTION
$28.95 -
PAUGHCO Outer Primary Cover 750
PAUGHCO
$314.95Made in the U.S.A.11070189- SKU:
- 11070189
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- OUTER PRIMARY
- FEATURES:
- FOR USE WITHOUT COMPENSATING SPROCKET
- UNITS:
- EACH
$314.95 -
PBI Transmission Mainshaft Sprocket - 25-Tooth 279-25
PBI
$59.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191025- SKU:
- DS191025
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- SILVER
- TOOTH COUNT:
- 25
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
$59.95 -
PBI Transmission Mainshaft Sprocket - 23-Tooth 279-23
PBI
$54.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191083- SKU:
- DS191083
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 23
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$54.95 -
PBI Transmission Mainshaft Sprocket - 24-Tooth 279-24
PBI
$54.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191084- SKU:
- DS191084
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 24
$54.95 -
PBI Transmission Mainshaft Sprocket - 22-Tooth 278-22
PBI
$54.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191086- SKU:
- DS191086
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 22
- UNITS:
- EACH
- CHAIN SIZE:
- 530
$54.95 -
PBI Transmission Mainshaft Sprocket - 23-Tooth 278-23
PBI
$54.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191087- SKU:
- DS191087
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- NATURAL
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 23
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
$54.95 -
PBI Transmission Mainshaft Sprocket - 24-Tooth 278-24
PBI
$54.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191088- SKU:
- DS191088
- Availability:
- Ships Same Business Day
- Weight:
- 1.63 LBS
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 24
- UNITS:
- EACH
$54.95 -
PBI Transmission Mainshaft Sprocket - 20-Tooth - XL 277-20
PBI
$68.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191089- SKU:
- DS191089
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 20
- TYPE:
- MAINSHAFT
- CHAIN SIZE:
- 530
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
$68.95 -
PBI Transmission Mainshaft Sprocket - 23-Tooth - XL 277-23
PBI
$78.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191092- SKU:
- DS191092
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 23
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- CHAIN SIZE:
- 530
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$78.95 -
PBI Offset Transmission Sprocket - 25-Tooth 302-25
PBI
$140.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...12120383- SKU:
- 12120383
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- CHAIN SIZE:
- 530
- OFFSET IMPERIAL:
- 0.750'
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- COLOR/FINISH:
- NICKEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 25
- UNITS:
- EACH
$140.95 -
PBI Sprocket - Front - 19-Tooth 277X-19-520
PBI
$65.95Sprockets are sold each; must order one front and one rear sprocket, Made in the U.S.A., May require custom spacing of front sprocket.12120318- SKU:
- 12120318
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- MATERIAL:
- CHROMOLY STEEL
- TYPE:
- CONVERSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 19
$65.95Qty in Cart: 0Quantity:Price:$65.95Subtotal: -
PBI Sprocket - Front - 20-Tooth 277X-20-520
PBI
$68.95Sprockets are sold each; must order one front and one rear sprocket, Made in the U.S.A., May require custom spacing of front sprocket.12120319- SKU:
- 12120319
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- MATERIAL:
- CHROMOLY STEEL
- TYPE:
- CONVERSION
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 20
$68.95 -
PBI Sprocket - Front - 22-Tooth 277X-22-520
PBI
$75.95Sprockets are sold each; must order one front and one rear sprocket, Made in the U.S.A., May require custom spacing of front sprocket.12120321- SKU:
- 12120321
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 22
- UNITS:
- EACH
- MATERIAL:
- CHROMOLY STEEL
- TYPE:
- CONVERSION
- RIDING STYLE:
- STREET
$75.95 -
PBI Offset Transmission Sprocket - 23-Tooth 284-23
PBI
$110.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...12120260- SKU:
- 12120260
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 530
- MATERIAL:
- STEEL
- OFFSET IMPERIAL:
- CENTERED
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- TOOTH COUNT:
- 23
- COLOR/FINISH:
- NICKEL
- RIDING STYLE:
- STREET
$110.95 -
PBI Offset Transmission Sprocket - 22-Tooth 283-22
PBI
$102.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...12120136- SKU:
- 12120136
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- CHAIN SIZE:
- 530
- TYPE:
- MAINSHAFT
- COLOR/FINISH:
- NICKEL
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 22
- MATERIAL:
- STEEL
- OFFSET IMPERIAL:
- 0.500'
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
$102.95 -
PBI Offset Transmission Sprocket - 25-Tooth 303-25
PBI
$130.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...12120524- SKU:
- 12120524
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- NICKEL
- OFFSET IMPERIAL:
- 0.500'
- TOOTH COUNT:
- 25
- UNITS:
- EACH
$130.95 -
PBI Offset Transmission Sprocket - 26-Tooth 303-26
PBI
$130.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...12120525- SKU:
- 12120525
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- NICKEL
- OFFSET IMPERIAL:
- 0.500'
- TOOTH COUNT:
- 26
$130.95
