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
-
DRAG SPECIALTIES Rear Pulley Insert - 70-Tooth - BT '84-'99 80039
DRAG SPECIALTIES
$62.35Precision-formed, chrome-plated rear pulley inserts, Designed to match OEM pulley, Fit the outer portions of the belt drive sprocket12010539- SKU:
- 12010539
- Availability:
- Ships Same Business Day
- Weight:
- 1.71 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 70
- TYPE:
- PULLEY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- MODEL:
- PRECISION-FORMED
$62.35 -
DRAG SPECIALTIES Rear Pulley Insert - 65-Tooth - BT '84-'99 75005
DRAG SPECIALTIES
$62.35Precision-formed, chrome-plated rear pulley inserts, Designed to match OEM pulley, Fit the outer portions of the belt drive sprocket12010540- SKU:
- 12010540
- Availability:
- Ships Same Business Day
- Weight:
- 1.67 LBS
- COLOR/FINISH:
- CHROME
- MODEL:
- PRECISION-FORMED
- PRODUCT NAME:
- COVER
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TOOTH COUNT:
- 65
- TYPE:
- PULLEY
$62.35 -
DRAG SPECIALTIES Rear Wheel Sprocket - 46-Tooth - Chrome 19430P
DRAG SPECIALTIES
$93.55High-grade carbon steel replacement rear wheel sprocket, 1.9" center hole12100957- SKU:
- 12100957
- Availability:
- Ships Same Business Day
- Weight:
- 4.20 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- MATERIAL:
- CARBON STEEL
- CHAIN SIZE:
- 530
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- OFFSET IMPERIAL:
- 0.46'
- RIDING STYLE:
- STREET
- STYLE:
- DISHED
$93.55 -
DRAG SPECIALTIES Rear Wheel Sprocket - 49-Tooth - Chrome 19364P
DRAG SPECIALTIES
$87.31High-grade carbon steel replacement rear wheel sprocket, 1.9" center hole12100603- SKU:
- 12100603
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- MATERIAL:
- CARBON STEEL
- CHAIN SIZE:
- 530
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- OFFSET IMPERIAL:
- CENTERED
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$87.31 -
DRAG SPECIALTIES Rear Wheel Sprocket - 51-Tooth - Chrome 70741P
DRAG SPECIALTIES
$93.55High-grade carbon steel replacement rear wheel sprocket, 1.9" center hole12100604- SKU:
- 12100604
- Availability:
- Ships Same Business Day
- Weight:
- 4.80 LBS
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- CHROME
- MATERIAL:
- CARBON STEEL
- MOUNTING POSITION:
- REAR
- OFFSET IMPERIAL:
- CENTERED
- RIDING STYLE:
- STREET
$93.55 -
DRAG SPECIALTIES Rear Wheel Sprocket - 51-Tooth - Chrome 71891DP
DRAG SPECIALTIES
$93.55High-grade carbon steel replacement rear wheel sprocket, 1.9" center hole12100606- SKU:
- 12100606
- Availability:
- Ships Same Business Day
- Weight:
- 5.50 LBS
- CHAIN SIZE:
- 530
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- STYLE:
- FLAT
- TYPE:
- DRIVE
- MATERIAL:
- CARBON STEEL
- COLOR/FINISH:
- CHROME
- OFFSET IMPERIAL:
- CENTERED
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$93.55 -
DRAG SPECIALTIES Rear Wheel Sprocket - 48-Tooth - Chrome 19093P
DRAG SPECIALTIES
$93.55High-grade carbon steel replacement rear wheel sprocket, 1.9" center hole12100608- SKU:
- 12100608
- Availability:
- Ships Same Business Day
- Weight:
- 4.79 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- CARBON STEEL
- OFFSET IMPERIAL:
- 0.23'
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
$93.55Qty in Cart: 0Quantity:Price:$93.55Subtotal: -
DRAG SPECIALTIES Rear Sprocket - Chrome - Flat - 48-Tooth 16421P
DRAG SPECIALTIES
$93.55Convert rear drive belt to 530 chain, 2.22" Center diameter12100364- SKU:
- 12100364
- Availability:
- Ships Same Business Day
- Weight:
- 4.75 LBS
- RIDING STYLE:
- STREET
- STYLE:
- FLAT
- BORE SIZE IMPERIAL:
- 2.220'
- COLOR/FINISH:
- CHROME
- OFFSET IMPERIAL:
- CENTERED
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- TYPE:
- CONVERSION
- CHAIN SIZE:
- 530
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
- UNITS:
- EACH
$93.55 -
DRAG SPECIALTIES Rear Sprocket - Chrome - Flat - 49-Tooth 16422P
DRAG SPECIALTIES
$86.27Convert rear drive belt to 530 chain, 2.22" Center diameter12100365- SKU:
- 12100365
- Availability:
- Ships Same Business Day
- Weight:
- 4.31 LBS
$86.27 -
DRAG SPECIALTIES Rear Sprocket - Chrome - Flat - 51-Tooth 16423P
DRAG SPECIALTIES
$93.55Convert rear drive belt to 530 chain, 2.22" Center diameter12100366- SKU:
- 12100366
- Availability:
- Ships Same Business Day
- Weight:
- 4.91 LBS
- OFFSET IMPERIAL:
- CENTERED
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- TYPE:
- CONVERSION
- UNITS:
- EACH
- BORE SIZE IMPERIAL:
- 2.220'
- MATERIAL:
- STEEL
- STYLE:
- FLAT
- TYPE:
- DRIVE
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$93.55 -
DRAG SPECIALTIES Rear Sprocket - Chrome - Dished - 49-Tooth 16425P
DRAG SPECIALTIES
$87.31Convert rear drive belt to 530 chain, 2.22" Center diameter12100368- SKU:
- 12100368
- Availability:
- Ships Same Business Day
- Weight:
- 4.20 LBS
- CHAIN SIZE:
- 530
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- BORE SIZE IMPERIAL:
- 2.220'
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- CHROME
- OFFSET IMPERIAL:
- 0.230'
- RIDING STYLE:
- STREET
- STYLE:
- DISHED
- TYPE:
- CONVERSION
$87.31 -
DRAG SPECIALTIES Rear Sprocket - Chrome - Dished - 51-Tooth 16426P
DRAG SPECIALTIES
$93.55Convert rear drive belt to 530 chain, 2.22" Center diameter12100369- SKU:
- 12100369
- Availability:
- Ships Same Business Day
- Weight:
- 4.88 LBS
- OFFSET IMPERIAL:
- 0.230'
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- STYLE:
- DISHED
- TYPE:
- CONVERSION
- BORE SIZE IMPERIAL:
- 2.220'
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$93.55Qty in Cart: 0Quantity:Price:$93.55Subtotal: -
DRAG SPECIALTIES Rear Sprocket - Chrome - Dished - 46-Tooth 16431P
DRAG SPECIALTIES
$87.31Convert rear drive belt to 530 chain, 2.22" Center diameter12100377- SKU:
- 12100377
- Availability:
- Ships Same Business Day
- Weight:
- 4.15 LBS
- OFFSET IMPERIAL:
- 0.230'
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- TYPE:
- CONVERSION
- UNITS:
- EACH
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- STYLE:
- DISHED
- BORE SIZE IMPERIAL:
- 2.220'
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
$87.31 -
DRAG SPECIALTIES Rear Wheel Sprocket - 46-Tooth - Chrome 16427P
DRAG SPECIALTIES
$86.27High-grade carbon steel replacement rear wheel sprocket, 1.9" center hole12100379- SKU:
- 12100379
- Availability:
- Ships Same Business Day
- Weight:
- 4.24 LBS
$86.27 -
DRAG SPECIALTIES Rear Wheel Sprocket - 46-Tooth - Dished 16428P
DRAG SPECIALTIES
$93.55High-grade carbon steel replacement rear wheel sprocket, 1.9" center hole12100381- SKU:
- 12100381
- Availability:
- Ships Same Business Day
- Weight:
- 4.32 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- OFFSET IMPERIAL:
- 0.23'
- PRODUCT NAME:
- SPROCKET
- TYPE:
- DRIVE
- UNITS:
- EACH
- MATERIAL:
- CARBON STEEL
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 46
$93.55Qty in Cart: 0Quantity:Price:$93.55Subtotal: -
DRAG SPECIALTIES '84-'90 Sportster Clutch Hub 64167
DRAG SPECIALTIES
$118.40Improved inner clutch hub with reinforced insert, Accepts all OEM components11321120- SKU:
- 11321120
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- PRODUCT NAME:
- INNER HUB
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$118.40 -
DRAG SPECIALTIES Outer Primary Cover - Chrome - Narrow Profile 77957
DRAG SPECIALTIES
$463.45Die-cast aluminum construction, Hardware and bushing not included11070536- SKU:
- 11070536
- Availability:
- Ships Same Business Day
- Weight:
- 6.45 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- NARROW
- TYPE:
- OUTER PRIMARY
- UNITS:
- EACH
$463.45 -
DRAG SPECIALTIES Outer Primary Cover - Black - Narrow Profile 77957B
DRAG SPECIALTIES
$472.72Die-cast aluminum construction, Hardware and bushing not included11070537- SKU:
- 11070537
- Availability:
- Ships Same Business Day
- Weight:
- 6.15 LBS
- STYLE:
- NARROW
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- OUTER PRIMARY
- UNITS:
- EACH
- COLOR/FINISH:
- SATIN BLACK
$472.72 -
DRAG SPECIALTIES Primary Cover - Chrome 63134
DRAG SPECIALTIES
$376.93Die-cast aluminum construction, Inspection covers and derby covers are available separately11070538- SKU:
- 11070538
- Availability:
- Ships Same Business Day
- Weight:
- 5.85 LBS
- TYPE:
- PRIMARY
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$376.93 -
DRAG SPECIALTIES Primary Cover - Black 63134B
DRAG SPECIALTIES
$368.69Die-cast aluminum construction, Inspection covers and derby covers are available separately11070539- SKU:
- 11070539
- Availability:
- Ships Same Business Day
- Weight:
- 5.60 LBS
- TYPE:
- PRIMARY
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$368.69
