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
-
PBI Offset Transmission Sprocket - 24-Tooth 302-24
PBI
$137.95CNC-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,...12120526- SKU:
- 12120526
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- COLOR/FINISH:
- NICKEL
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 530
- OFFSET IMPERIAL:
- 0.750'
- TOOTH COUNT:
- 24
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
$137.95 -
PBI Sprocket - Front - 21-Tooth 277X-21-520
PBI
$71.95Sprockets are sold each; must order one front and one rear sprocket, Made in the U.S.A., May require custom spacing of front sprocket.12120320- SKU:
- 12120320
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- CONVERSION
- UNITS:
- EACH
- MATERIAL:
- CHROMOLY STEEL
- TOOTH COUNT:
- 21
- RIDING STYLE:
- STREET
$71.95Qty in Cart: 0Quantity:Price:$71.95Subtotal: -
PBI Sprocket - Front - 23-Tooth 277X-23-520
PBI
$78.95Sprockets are sold each; must order one front and one rear sprocket, Made in the U.S.A., May require custom spacing of front sprocket.12120322- SKU:
- 12120322
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- TYPE:
- CONVERSION
- MATERIAL:
- CHROMOLY STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 23
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
$78.95 -
PBI Offset Transmission Sprocket - 24-Tooth 284-24
PBI
$118.95CNC-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,...12120261- SKU:
- 12120261
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 24
- COLOR/FINISH:
- NICKEL
- MATERIAL:
- STEEL
- OFFSET IMPERIAL:
- CENTERED
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
$118.95 -
PBI Offset Transmission Sprocket - 24-Tooth 289-24
PBI
$169.95CNC-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,...12120262- SKU:
- 12120262
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- OFFSET IMPERIAL:
- 1.310'
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 24
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- COLOR/FINISH:
- NICKEL
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
$169.95 -
PBI Offset Transmission Sprocket - 24-Tooth 283-24
PBI
$122.95CNC-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,...12120138- SKU:
- 12120138
- Availability:
- Ships Same Business Day
- Weight:
- 2.12 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- NICKEL
- OFFSET IMPERIAL:
- 0.500'
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 24
$122.95 -
PBI Offset Transmission Sprocket - 24-Tooth 303-24
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,...12120523- SKU:
- 12120523
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- CHAIN SIZE:
- 530
- TYPE:
- MAINSHAFT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- NICKEL
- RIDING STYLE:
- STREET
- OFFSET IMPERIAL:
- 0.500'
- TOOTH COUNT:
- 24
- UNITS:
- EACH
$130.95 -
PBI Transmission Mainshaft Sprocket - 21-Tooth - XL 277-21
PBI
$71.95Premium 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.DS191090- SKU:
- DS191090
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- CHAIN SIZE:
- 530
- TOOTH COUNT:
- 21
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
$71.95 -
PBI Transmission Mainshaft Sprocket - 22-Tooth 279-22
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.DS191082- SKU:
- DS191082
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- TOOTH COUNT:
- 22
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- PRODUCT NAME:
- SPROCKET
$54.95 -
POWERSTANDS RACING Primary Chain Tensioner 12-02001-22
POWERSTANDS RACING
$222.95Helps with over tightening; easy to adjust, Heavy-duty manual tensioner, Precision machined from billet aluminum, Mounts with OEM hardware11200409- SKU:
- 11200409
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- CHAIN TENSIONER
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$222.95 -
PRO-ONE PERF.MFG. Derby Cover - Millennium - Smooth 202120
PRO-ONE PERF.MFG.
$115.45Billet aluminum coversDS375744- SKU:
- DS375744
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- UNITS:
- EACH
- MODEL:
- MILLENNIUM
- RIDING STYLE:
- STREET
- TYPE:
- DERBY
- COLOR/FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- STYLE:
- SMOOTH
$115.45Qty in Cart: 0Quantity:Price:$115.45Subtotal: -
PRO-ONE PERF.MFG. Derby Cover - Millennium - Ball Milled 202130
PRO-ONE PERF.MFG.
$115.45Billet aluminum coversDS375745- SKU:
- DS375745
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- BALL-MILLED
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- MODEL:
- MILLENNIUM
- UNITS:
- EACH
$115.45Qty in Cart: 0Quantity:Price:$115.45Subtotal: -
PRO-ONE PERF.MFG. Derby Cover - Ball Milled - Big Twin 203860
PRO-ONE PERF.MFG.
$126.45Billet aluminum coversDS375747- SKU:
- DS375747
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- MILLENNIUM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- STYLE:
- BALL-MILLED
- TYPE:
- DERBY
$126.45 -
PRO-ONE PERF.MFG. Clutch Actuator - Chrome - Hydraulic 202240
PRO-ONE PERF.MFG.
$252.95Crafted from billet aluminum with a chrome or black anodized finish, Installs with OEM bolts; 10mm banjo bolt, banjo washers and bleeder screw included, Requires the use of an 11/16" bore master cylinder (sold separately), Hydraulic line not included202240- SKU:
- 202240
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- TYPE:
- HYDRAULIC
- PRODUCT NAME:
- CLUTCH ACTUATOR
- RIDING STYLE:
- STREET
$252.95 -
PRO-ONE PERF.MFG. Derby Cover - Millennium 203850B
PRO-ONE PERF.MFG.
$126.45Billet aluminum covers09401066- SKU:
- 09401066
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MATERIAL:
- BILLET ALUMINUM
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- STYLE:
- SMOOTH
- MODEL:
- MILLENNIUM
- RIDING STYLE:
- STREET
- TYPE:
- DERBY
$126.45 -
PRO-ONE PERF.MFG. Derby Cover 203861B
PRO-ONE PERF.MFG.
$142.955-hole derby cover11070626- SKU:
- 11070626
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- PRODUCT NAME:
- COVER
- PRODUCT NAME:
- DERBY COVER
- TYPE:
- DERBY
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- STYLE:
- SMOOTH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- MODEL:
- MILLENNIUM
$142.95 -
PRO-ONE PERF.MFG. Clutch Actuator - Black - Hydraulic 202240B
PRO-ONE PERF.MFG.
$252.95Crafted from billet aluminum with a chrome or black anodized finish, Installs with OEM bolts; 10mm banjo bolt, banjo washers and bleeder screw included, Requires the use of an 11/16" bore master cylinder (sold separately), Hydraulic line not included11070252- SKU:
- 11070252
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- TYPE:
- HYDRAULIC CLUTCH ACTUATOR
- RIDING STYLE:
- STREET
$252.95 -
MOTOR TRIKE Mechanical Reverse Kit MTTR-0123
MOTOR TRIKE INC
$1,595.95Make parking anywhere possible, Constructed from lightweight aluminum, chromed and zinc-plated, Equipped with an electronic cut-off switch to protect transmission from operator error, No exhaust modification needed when used with OEM exhaust, Do not...11030023- SKU:
- 11030023
- Availability:
- Ships Same Business Day
- Weight:
- 7.14 LBS
- FEATURES:
- HYDRAULIC CLUTCH
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- MECHANICAL REVERSE KIT
- MATERIAL:
- ALUMINUM
- STYLE:
- REPLACEMENT
$1,595.95 -
MOTOR TRIKE Mechanical Reverse Kit MTTR-0023
MOTOR TRIKE INC
$1,495.95Make parking anywhere possible, Constructed from lightweight aluminum, chromed and zinc-plated, Equipped with an electronic cut-off switch to protect transmission from operator error, No exhaust modification needed when used with OEM exhaust, Do not...11030025- SKU:
- 11030025
- Availability:
- Ships Same Business Day
- Weight:
- 7.03 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- MECHANICAL REVERSE KIT
- UNITS:
- KIT
- FEATURES:
- STANDARD CLUTCH
- STYLE:
- REPLACEMENT
$1,495.95 -
MOTOR TRIKE Mechanical Reverse Kit MTTR-0024
MOTOR TRIKE INC
$1,495.95Make parking anywhere possible, Constructed from lightweight aluminum, chromed and zinc-plated, Equipped with an electronic cut-off switch to protect transmission from operator error, No exhaust modification needed when used with OEM exhaust, Do not...11030029- SKU:
- 11030029
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- STYLE:
- REPLACEMENT
- UNITS:
- KIT
- PRODUCT NAME:
- MECHANICAL REVERSE KIT
- FEATURES:
- HYDRAULIC CLUTCH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
$1,495.95
