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 Transmission Mainshaft Sprocket - 22-Tooth 278-22
PBI
$60.15A quality mainshaft sprocket is critical to reliable power transfer in high-performance transmissions. This PBI 22-tooth sprocket delivers the precision engineering and durability needed to handle...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
$60.15 -
PBI Transmission Mainshaft Sprocket - 23-Tooth 278-23
PBI
$60.15A quality transmission mainshaft sprocket is foundational to reliable power delivery and consistent shift performance under high-load conditions. The PBI 23-tooth sprocket delivers precision...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
$60.15 -
PBI Transmission Mainshaft Sprocket - 24-Tooth 278-24
PBI
$60.15A quality mainshaft sprocket is the foundation of reliable power transfer in any high-performance drivetrain. The PBI 24-tooth sprocket delivers consistent engagement with zero play, ensuring your...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
$60.15 -
PBI Transmission Mainshaft Sprocket - 20-Tooth - XL 277-20
PBI
$75.30A transmission mainshaft sprocket is the critical link between your engine's power and your drivetrain's efficiency. Worn or substandard sprockets introduce slack, missed shifts, and premature chain...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
$75.30 -
PBI Transmission Mainshaft Sprocket - 23-Tooth - XL 277-23
PBI
$86.80A transmission mainshaft sprocket is critical to power delivery and chain engagement in any high-performance drivetrain. This 23-tooth sprocket is precision-engineered to handle the demands of...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
$86.80 -
PBI Offset Transmission Sprocket - 25-Tooth 302-25
PBI
$146.55Precise sprocket alignment is critical to chain longevity and power delivery in high-performance applications. The PBI 25-Tooth Offset Transmission Sprocket delivers exact fitment and durability...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
$146.55 -
PBI Sprocket - Front - 20-Tooth 277X-20-520
PBI
$75.30Precision sprocket geometry directly impacts your power delivery and acceleration curve, making front sprocket selection critical to overall drivetrain performance. The PBI 20-tooth front sprocket is...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
$75.30 -
PBI Sprocket - Front - 22-Tooth 277X-22-520
PBI
$75.95Fine-tune your bike's acceleration and top-end performance with precision sprocket engineering. A 22-tooth front sprocket adjusts your final drive ratio for track-specific conditions, giving you the...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
$75.95Qty in Cart: 0Quantity:Price:$75.95Subtotal: -
PBI Offset Transmission Sprocket - 23-Tooth 284-23
PBI
$114.90Precision sprocket alignment is critical for consistent power delivery and extended drivetrain life—misalignment introduces vibration, accelerates wear, and costs you performance when it matters most...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
$114.90Qty in Cart: 0Quantity:Price:$114.90Subtotal: -
PBI Offset Transmission Sprocket - 22-Tooth 283-22
PBI
$108.90Precision chain alignment is critical for maximizing drivetrain efficiency and extending sprocket life, especially in high-stress racing applications. The PBI 22-Tooth Offset Transmission Sprocket...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
$108.90 -
PBI Offset Transmission Sprocket - 25-Tooth 303-25
PBI
$130.90Chain alignment and sprocket offset are critical to transmission longevity and power delivery—misalignment accelerates wear on both sprocket and chain, robbing you of efficiency and reliability. The...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
$130.90 -
PBI Offset Transmission Sprocket - 26-Tooth 303-26
PBI
$130.90Precise sprocket alignment is non-negotiable in high-RPM racing applications where chain whip and wear can cost you races. The PBI 26-Tooth Offset Transmission Sprocket delivers exact positioning...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
$130.90 -
PBI Offset Transmission Sprocket - 24-Tooth 302-24
PBI
$141.40Precise sprocket alignment is critical for chain drive efficiency and component longevity in high-performance applications. The PBI 302-24 offset transmission sprocket corrects mainshaft geometry...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
$141.40 -
PBI Sprocket - Front - 23-Tooth 277X-23-520
PBI
$86.25Precision sprocket selection is fundamental to optimizing your drivetrain's power delivery and acceleration characteristics. This 23-tooth front sprocket from PBI delivers the engineering accuracy...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
$86.25 -
PBI Offset Transmission Sprocket - 24-Tooth 284-24
PBI
$121.80Precision chain alignment is critical for maximizing power transfer and extending drivetrain component life in high-performance applications. The PBI Offset Transmission Sprocket delivers exact...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
$121.80Qty in Cart: 0Quantity:Price:$121.80Subtotal: -
PBI Offset Transmission Sprocket - 24-Tooth 289-24
PBI
$174.80Precise sprocket offset is critical for optimizing chain alignment and maximizing drivetrain efficiency in high-performance applications. This 24-tooth offset sprocket delivers the exact geometry...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
$174.80 -
PBI Offset Transmission Sprocket - 24-Tooth 283-24
PBI
$125.60Precision sprocket alignment is critical to chain longevity and drivetrain efficiency. This CNC-machined offset sprocket compensates for chassis geometry variations, allowing you to optimize your...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
$125.60 -
PBI Offset Transmission Sprocket - 24-Tooth 303-24
PBI
$130.90Transmission sprocket selection directly impacts your final drive ratio, acceleration response, and top-end performance—choosing the right offset ensures proper chain alignment and maximizes...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
$130.90 -
PBI Transmission Mainshaft Sprocket - 21-Tooth - XL 277-21
PBI
$79.25A transmission mainshaft sprocket is the critical interface between your engine's power delivery and your drivetrain, directly affecting acceleration response and load distribution. PBI's 21-tooth...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
$79.25 -
PBI Transmission Mainshaft Sprocket - 22-Tooth 279-22
PBI
$60.15A transmission mainshaft sprocket is critical to your drivetrain's efficiency and reliability—it directly affects power delivery, acceleration response, and chain longevity. The PBI 22-Tooth sprocket...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
$60.15
