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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ANDREWS Shift Fork - Center Shaft 209750
ANDREWS
$39.95A precision shift fork is critical to reliable gear engagement and smooth transmission operation under racing conditions. The ANDREWS 209750 Center Shaft Shift Fork delivers the durability and accuracy required by professional racers and high-performance...DS194210- SKU:
- DS194210
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- PRODUCT NAME:
- SHIFTER FORK
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- TRANSMISSION TYPE:
- 4 SPEED
$39.95 -
ANDREWS 1st Gear - Close Ratio 201145
ANDREWS
$178.95If you're serious about drag racing or circuit competition, a close-ratio first gear is essential for maximizing acceleration off the line and maintaining optimal engine RPM through low-speed corners. The Andrews 1st Gear delivers the aggressive ratio...DS199407- SKU:
- DS199407
- Availability:
- Ships Same Business Day
- Weight:
- 2.44 LBS
- RIDING STYLE:
- STREET
- UNITS:
- SET
- FIRST GEAR RATIO:
- 2.60:1
- PRODUCT NAME:
- GEAR SET
- TYPE:
- FIRST GEAR
$178.95 -
ANDREWS 4th Gear Mainshaft 204260
ANDREWS
$211.95If you're running a high-performance or modified engine, your stock mainshaft is likely your first bottleneck. The Andrews 4th Gear Mainshaft 204260 is engineered for reliability under sustained high-RPM operation and is a proven upgrade for serious...DS199408- SKU:
- DS199408
- Availability:
- Ships Same Business Day
- Weight:
- 1.92 LBS
- PRODUCT NAME:
- GEAR
- TYPE:
- MAIN DRIVE
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD RATIO
- UNITS:
- EACH
$211.95 -
JOKER MACHINE Inspection Cover 10-664B
JOKER MACHINE
$47.95An inspection cover that actually looks the part. The JOKER MACHINE 10-664B delivers clean aesthetics without sacrificing functionality—precision CNC-milling ensures a perfect fit and professional finish on your engine bay. This is the kind of detail...11070260- SKU:
- 11070260
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 6061 T-6 ALUMINUM
- MOUNTING STYLE:
- 2 HOLE
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- STYLE:
- FINNED
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- TYPE:
- INSPECTION
$47.95 -
JOKER MACHINE Inspection Cover 10-665B
JOKER MACHINE
$47.95Engine bay aesthetics matter when you're putting serious work into your build. The JOKER MACHINE Inspection Cover delivers a refined, finished look while protecting critical engine components from debris and contamination. This is the kind of attention...11070263- SKU:
- 11070263
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- TECHNO
- MOUNTING STYLE:
- 2 HOLE
- TYPE:
- INSPECTION
$47.95 -
BAKER DRIVETRAIN Transmission Rebuild Kit TRK-DYN
BAKER DRIVETRAIN
$379.00A transmission rebuild doesn't have to mean sourcing components from multiple suppliers or dealing with missing hardware halfway through your project. The BAKER DRIVETRAIN Transmission Rebuild Kit TRK-DYN consolidates everything you need for a complete,...11040002- SKU:
- 11040002
- Availability:
- Ships Same Business Day
- Weight:
- 4.40 LBS
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
$379.00 -
On Sale
BARNETT Scorpion Clutch 607-30-10871
BARNETT
MSRP: $720.24Now: $648.22Was: $720.24If you're running a stock clutch on a modified engine or pushing your bike harder than factory specs intended, you're operating on borrowed time. The BARNETT Scorpion Clutch 607-30-10871 is engineered to handle increased power loads while delivering the...DS223468- SKU:
- DS223468
- Availability:
- Ships Same Business Day
- Weight:
- 7.25 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SCORPION
- UNITS:
- KIT
- COLOR/FINISH:
- ORANGE
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
MSRP: $720.24Now: $648.22Was: $720.24 -
On Sale
BARNETT Scorpion Clutch 607-30-10084
BARNETT
MSRP: $720.24Now: $648.22Was: $720.24If you're running more power through your engine—whether you're tuning a stock motor or building a high-performance machine—your factory clutch won't cut it. The BARNETT Scorpion delivers substantially higher capacity while maintaining progressive...DS223469- SKU:
- DS223469
- Availability:
- Ships Same Business Day
- Weight:
- 7.40 LBS
- COLOR/FINISH:
- ORANGE
- MODEL:
- SCORPION
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- MATERIAL:
- BILLET ALUMINUM
- UNITS:
- KIT
MSRP: $720.24Now: $648.22Was: $720.24 -
On Sale
BARNETT Scorpion Clutch 607-30-10091
BARNETT
MSRP: $720.24Now: $648.22Was: $720.24If you're running increased power or simply want a clutch that behaves predictably under load, the BARNETT Scorpion delivers the capacity and engagement control that separates reliable builds from compromised ones. Stock clutches hit their limits...DS223470- SKU:
- DS223470
- Availability:
- Ships Same Business Day
- Weight:
- 7.45 LBS
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- UNITS:
- KIT
- COLOR/FINISH:
- ORANGE
- MODEL:
- SCORPION
MSRP: $720.24Now: $648.22Was: $720.24 -
On Sale
BARNETT Clutch Friction Plates 302-30-20013
BARNETT
MSRP: $197.07Now: $177.36Was: $197.07A clutch is only as good as its friction plates—and under racing conditions or aggressive driving, stock plates simply won't cut it. BARNETT's carbon fiber and aramid friction plates are engineered to handle extreme heat cycles while delivering the...DS223471- SKU:
- DS223471
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- FRICTION PLATE SET
- FRICTION PLATE MATERIAL:
- CARBON FIBER
- TYPE:
- CLUTCH
- UNITS:
- SET OF 9
- RIDING STYLE:
- STREET
MSRP: $197.07Now: $177.36Was: $197.07 -
On Sale
BARNETT Clutch Kit 303-30-10015
BARNETT
MSRP: $253.41Now: $228.07Was: $253.41A worn or slipping clutch compromises your power transfer and leaves performance on the table—whether you're driving street or circuit. The BARNETT Clutch Kit 303-30-10015 restores full engagement with OEM-quality components designed to handle repeated...DS223473- SKU:
- DS223473
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- TYPE:
- COMPLETE
- DRIVE PLATE MATERIAL:
- STEEL
- FEATURES:
- INCLUDES SPRINGS
- FRICTION PLATE MATERIAL:
- DUPONT™ KEVLAR®
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
MSRP: $253.41Now: $228.07Was: $253.41 -
On Sale
BARNETT Extra Plate Clutch Kit 304-30-10015
BARNETT
MSRP: $272.41Now: $245.17Was: $272.41A clutch kit lives at the intersection of reliability and performance—it must handle extreme heat, friction, and engagement cycles without compromise. The BARNETT Extra Plate Clutch Kit delivers the durability and consistent engagement you need whether...DS223474- SKU:
- DS223474
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- FRICTION PLATE MATERIAL:
- ARAMID FIBER
- PRODUCT NAME:
- CLUTCH PLATE KIT
- RIDING STYLE:
- STREET
- DRIVE PLATE MATERIAL:
- STEEL
- UNITS:
- KIT
MSRP: $272.41Now: $245.17Was: $272.41 -
On Sale
BARNETT Extra Plate Clutch Kit 307-30-10090
BARNETT
MSRP: $276.79Now: $249.11Was: $276.79A clutch kit built for the demands of high-RPM riding and aggressive acceleration, the BARNETT Extra Plate Clutch delivers increased holding capacity through additional friction surfaces and superior material engineering. Whether you're running forced...DS223763- SKU:
- DS223763
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- FRICTION PLATE MATERIAL:
- DUPONT™ KEVLAR®
- RIDING STYLE:
- STREET
- DRIVE PLATE MATERIAL:
- STEEL
- TYPE:
- COMPLETE
MSRP: $276.79Now: $249.11Was: $276.79 -
On Sale
BARNETT Clutch Friction Plates 302-30-10030
BARNETT
MSRP: $163.80Now: $147.42Was: $163.80If you're running a high-performance clutch system that demands reliability under sustained heat and aggressive driving, BARNETT friction plates deliver the consistent engagement and durability required for both track and street applications. Whether...DS223766- SKU:
- DS223766
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- FRICTION PLATE MATERIAL:
- DUPONT™ KEVLAR®
- UNITS:
- SET OF 8
- PRODUCT NAME:
- FRICTION PLATE SET
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
MSRP: $163.80Now: $147.42Was: $163.80 -
On Sale
BARNETT Drive Plate 401-30-047060
BARNETT
MSRP: $10.55Now: $9.50Was: $10.55If you're pushing your transmission to the limit, clutch plate reliability becomes non-negotiable. The BARNETT Drive Plate 401-30-047060 delivers the thermal stability and engagement precision required for sustained high-performance driving, whether...DS223772- SKU:
- DS223772
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- DRIVE PLATE
- UNITS:
- EACH
- DRIVE PLATE MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
MSRP: $10.55Now: $9.50Was: $10.55 -
On Sale
BARNETT Scorpion Low-Profile Lock-Up Clutch 608-30-23710
BARNETT
MSRP: $1,096.06Now: $986.45Was: $1,096.06If you're running a high-displacement, high-horsepower engine, stock clutch performance becomes a limiting factor—especially when you need progressive engagement without constant lever fatigue. The BARNETT Scorpion Low-Profile Lock-Up Clutch delivers...11300207- SKU:
- 11300207
- Availability:
- Ships Same Business Day
- Weight:
- 10.60 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- BILLET ALUMINUM
- MATERIAL:
- STEEL
- UNITS:
- KIT
- MODEL:
- SCORPION
- TYPE:
- LOCK-UP
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
- TYPE:
- MECHANICAL
MSRP: $1,096.06Now: $986.45Was: $1,096.06 -
On Sale
BARNETT Scorpion Low-Profile Lock-Up Clutch 608-30-23806
BARNETT
MSRP: $1,096.06Now: $986.45Was: $1,096.06If you're running a stock or heavily modified engine, clutch engagement can make the difference between smooth launches and premature wear. The BARNETT Scorpion Low-Profile Lock-Up Clutch delivers progressive pressure modulation that adapts to your RPM...11300208- SKU:
- 11300208
- Availability:
- Ships Same Business Day
- Weight:
- 10.90 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- BILLET ALUMINUM
- MATERIAL:
- STEEL
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
- TYPE:
- MECHANICAL
- UNITS:
- KIT
- MODEL:
- SCORPION
- TYPE:
- LOCK-UP
MSRP: $1,096.06Now: $986.45Was: $1,096.06 -
On Sale
BARNETT Hydraulic Scorpion Clutch - Big Twin '11-'17 608-30-30011
BARNETT
MSRP: $720.24Now: $648.22Was: $720.24A quality clutch is your direct connection to the road—and the BARNETT Hydraulic Scorpion delivers the engagement and capacity modern big twins demand. Whether you're running stock power or pushing forced induction, this clutch provides smoother, more...11300209- SKU:
- 11300209
- Availability:
- Ships Same Business Day
- Weight:
- 9.75 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SCORPION
- TYPE:
- HYDRAULIC
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $720.24Now: $648.22Was: $720.24 -
On Sale
BARNETT Scorpion Low-Profile Lock-Up Clutch 608-30-33100
BARNETT
MSRP: $1,096.06Now: $986.45Was: $1,096.06If you're running a stock or heavily modified engine, clutch engagement directly impacts both drivability and durability. The BARNETT Scorpion Low-Profile Lock-Up Clutch delivers progressive pressure rise across the RPM band, giving you smoother shifts...11300210- SKU:
- 11300210
- Availability:
- Ships Same Business Day
- Weight:
- 10.55 LBS
- MATERIAL:
- STEEL
- UNITS:
- KIT
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SCORPION
- TYPE:
- LOCK-UP
- COLOR/FINISH:
- ORANGE
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
- TYPE:
- MECHANICAL
MSRP: $1,096.06Now: $986.45Was: $1,096.06 -
On Sale
BARNETT Hydraulic Scorpion Clutch - Big Twin '99-'06 608-30-30099
BARNETT
MSRP: $720.24Now: $648.22Was: $720.24If you're running a Big Twin and experiencing clutch slip under load or harsh engagement, the BARNETT Hydraulic Scorpion Clutch is engineered to eliminate both issues. This clutch delivers significantly higher capacity while maintaining the smooth,...11300011- SKU:
- 11300011
- Availability:
- Ships Same Business Day
- Weight:
- 9.45 LBS
- UNITS:
- KIT
- COLOR/FINISH:
- ORANGE
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SCORPION
- TYPE:
- HYDRAULIC
MSRP: $720.24Now: $648.22Was: $720.24
