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
-
On Sale
BARNETT Lock Up Clutch Kit - Hydraulic 618-30-33098
BARNETT
MSRP: $433.99Now: $390.59Was: $433.99Specifically designed to fit under the stock or aftermarket primary/derby covers and increase the capacity of your stock clutch by using stainless steel weighted arms that progressively increase pressure to the clutch as rpm increases, This also allows...11312405- SKU:
- 11312405
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- MODEL:
- SCORPION
- STYLE:
- LOCK-UP
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- PRODUCT NAME:
- PRESSURE PLATE
- UNITS:
- KIT
MSRP: $433.99Now: $390.59Was: $433.99 -
On Sale
BARNETT '99-'06 Big Twin Chrome/Clear Derby Cover 343-30-43006
BARNETT
MSRP: $302.10Now: $271.89Was: $302.10Designed to fit OEM primary covers on select Harley Davidson Big Twins, Features a clear 0.25" thick polycarbonate window to your clutch, Window is scratch and discoloration resistant and is sealed with an o-ring gasket, Derby cover gasket also included11070438- SKU:
- 11070438
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SCORPION SERIES
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $302.10Now: $271.89Was: $302.10 -
On Sale
BARNETT Billet Pressure Plate 319-30-20118
BARNETT
MSRP: $152.72Now: $137.45Was: $152.72Strong billet aluminum design, works with stock or heavy-duty diaphragm spring, Made in the U.S.A.20121270- SKU:
- 20121270
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- PRESSURE PLATE
- UNITS:
- EACH
MSRP: $152.72Now: $137.45Was: $152.72 -
On Sale
BARNETT Scorpion Clutch Basket - Big Twin '07-'16 321-30-02012
BARNETT
MSRP: $522.51Now: $470.26Was: $522.51Precision machined from billet aluminum and hard anodized, this basket is superior in quality and durability to the stock basket, Simply remove your stock ring gear/primary gear and bolt on the new Scorpion basket, All hardware and instructions are...11320930- SKU:
- 11320930
- Availability:
- Ships Same Business Day
- Weight:
- 3.70 LBS
- MODEL:
- SCORPION
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- BOLT-ON
- PRODUCT NAME:
- CLUTCH BASKET
MSRP: $522.51Now: $470.26Was: $522.51Qty in Cart: 0Quantity:Price:MSRP: $522.51Now: $470.26Was: $522.51Subtotal: -
On Sale
BARNETT Arm Shaft Clutch 356-40-80014
BARNETT
MSRP: $118.77Now: $106.89Was: $118.77Redesigned for better clutch separation, smoother shifting, and ease in finding neutral, Made in the U.S.A.11321343- SKU:
- 11321343
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- SHAFT
- TYPE:
- CLUTCH ARM
MSRP: $118.77Now: $106.89Was: $118.77 -
On Sale
BARNETT Extra Plate Clutch Kit 304-40-10016
BARNETT
MSRP: $280.49Now: $252.44Was: $280.49The segmented friction plates are designed for more oil flow resulting in cooler operating temps and a smoother, more positive clutch engagement, Increased clutch capacity and performance, Measured to ensure proper fit and performance, Kit includes 8...11313378- SKU:
- 11313378
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- FRICTION PLATE MATERIAL:
- ARAMID FIBER
- PRODUCT NAME:
- CLUTCH KIT
- DRIVE PLATE MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $280.49Now: $252.44Was: $280.49 -
On Sale
BARNETT Scout Clutch Kit 303-40-10015
BARNETT
MSRP: $263.88Now: $237.49Was: $263.88Includes friction plates, steel plates, and springs11313379- SKU:
- 11313379
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- RIDING STYLE:
- STREET
- DRIVE PLATE MATERIAL:
- STEEL
- UNITS:
- KIT
- FRICTION PLATE MATERIAL:
- ARAMID FIBER
- PRODUCT NAME:
- CLUTCH KIT
MSRP: $263.88Now: $237.49Was: $263.88 -
On Sale
BARNETT M8 Clutch Kit 303-30-10019
BARNETT
MSRP: $306.32Now: $275.69Was: $306.32Includes friction plates, steel plates, and springs11313325- SKU:
- 11313325
- Availability:
- Ships Same Business Day
- Weight:
- 2.31 LBS
- DRIVE PLATE MATERIAL:
- STEEL
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- FRICTION PLATE MATERIAL:
- ARAMID FIBER
- PRODUCT NAME:
- CLUTCH KIT
MSRP: $306.32Now: $275.69Was: $306.32 -
On Sale
BARNETT Complete Clutch Kit - Indian 303-40-20014
BARNETT
MSRP: $250.95Now: $225.86Was: $250.95Carbon fiber, Includes seven frictions, six steels and a set of five heavy-duty springs, Made in the U.S.A.11313025- SKU:
- 11313025
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- RIDING STYLE:
- STREET
- DRIVE PLATE MATERIAL:
- STEEL
- FEATURES:
- INCLUDES SPRINGS
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- FRICTION PLATE MATERIAL:
- CARBON FIBER
- TYPE:
- COMPLETE
MSRP: $250.95Now: $225.86Was: $250.95 -
On Sale
BARNETT Scorpion Clutch Basket - M8 '17-'19 321-30-02017
BARNETT
MSRP: $522.51Now: $470.26Was: $522.51Precision machined from billet aluminum and hard anodized, this basket is superior in quality and durability to the stock basket, Simply remove your stock ring gear/primary gear and bolt on the new Scorpion basket, All hardware and instructions are...11321000- SKU:
- 11321000
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- BOLT-ON
- MODEL:
- SCORPION
- UNITS:
- EACH
- PRODUCT NAME:
- CLUTCH BASKET
MSRP: $522.51Now: $470.26Was: $522.51 -
On Sale
BARNETT Clutch Spring Conversion Kit - Hydraulic Clutch 511-30-10904
BARNETT
MSRP: $222.56Now: $200.30Was: $222.56Converts your diaphragm spring clutch system to six coil springs, CNC-machined billet pressure plate, Ideal for stock to high-performance motors, Allows for more precise adjustment and smoother operation, Increases the holding capacity of the clutch,...11312051- SKU:
- 11312051
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- PRODUCT NAME:
- CONVERSION KIT
- STYLE:
- HYDRAULIC CLUTCH
- TYPE:
- CLUTCH SPRING
- MATERIAL:
- BILLET ALUMINUM
- UNITS:
- KIT
- COLOR/FINISH:
- ORANGE
- RIDING STYLE:
- STREET
MSRP: $222.56Now: $200.30Was: $222.56 -
On Sale
BARNETT Clutch - Hydraulic Retro Fit 618-30-33806
BARNETT
MSRP: $433.99Now: $390.59Was: $433.99New low-profile design fits under stock primary cover, Low-profile design fits under stock primary cover, Direct bolt-on design retro-fits to existing Scorpion billet clutches, Direct bolt-on design retro-fits to existing Scorpion billet clutches,...11312448- SKU:
- 11312448
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- STYLE:
- HYDRAULIC CLUTCH
- PRODUCT NAME:
- PRESSURE PLATE
- TYPE:
- CLUTCH
- UNITS:
- KIT
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- MODEL:
- SCORPION
- STYLE:
- LOCK-UP
MSRP: $433.99Now: $390.59Was: $433.99 -
ALTO PRODUCTS Carbonite Clutch 095750NC
ALTO PRODUCTS
$239.95Made from 3M™ carbon-based friction-based material to withstand higher coefficients of friction and higher temperatures than any other product available, Kolene® Melonite® treated steels for enhanced performance, engagement, longer life and cooler...11310463- SKU:
- 11310463
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- PRODUCT NAME:
- PLATE SET
- DRIVE PLATE MATERIAL:
- STEEL
- FRICTION PLATE MATERIAL:
- CARBON FIBER
- MODEL:
- CARBONITE POWERPAK
- TYPE:
- CLUTCH
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$239.95Qty in Cart: 0Quantity:Price:$239.95Subtotal: -
ALTO PRODUCTS Red Eagle Plates 095752A
ALTO PRODUCTS
$75.95Aramid plates are for high-performance applications; Red Eagle organic plates are for OEM replacement, Increased surface area for decreased slipping, Increases holding while decreasing heat generation, Can be run wet or dry, Meets or exceeds OEM...11310464- SKU:
- 11310464
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- FRICTION PLATE MATERIAL:
- ORGANIC
- MODEL:
- RED EAGLE®
- PRODUCT NAME:
- FRICTION PLATE SET
- TYPE:
- CLUTCH
- UNITS:
- 7 PACK
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
$75.95 -
ALTO PRODUCTS Red Eagle Plates 095752B
ALTO PRODUCTS
$60.95Aramid plates are for high-performance applications; Red Eagle organic plates are for OEM replacement, Increased surface area for decreased slipping, Increases holding while decreasing heat generation, Can be run wet or dry, Meets or exceeds OEM...11310465- SKU:
- 11310465
- Availability:
- Ships Same Business Day
- Weight:
- 1.07 LBS
- COLOR/FINISH:
- RED
- FRICTION PLATE MATERIAL:
- ORGANIC
- PRODUCT NAME:
- FRICTION PLATE SET
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- MODEL:
- RED EAGLE®
- UNITS:
- 8 PACK
$60.95Qty in Cart: 0Quantity:Price:$60.95Subtotal: -
ALTO PRODUCTS Red Eagle Plates 095752D
ALTO PRODUCTS
$55.95Aramid plates are for high-performance applications; Red Eagle organic plates are for OEM replacement, Increased surface area for decreased slipping, Increases holding while decreasing heat generation, Can be run wet or dry, Meets or exceeds OEM...11310467- SKU:
- 11310467
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- COLOR/FINISH:
- RED
- FRICTION PLATE MATERIAL:
- ORGANIC
- PRODUCT NAME:
- FRICTION PLATE SET
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- MODEL:
- RED EAGLE®
- TYPE:
- CLUTCH
$55.95Qty in Cart: 0Quantity:Price:$55.95Subtotal: -
ALTO PRODUCTS Red Eagle Plates 095752E
ALTO PRODUCTS
$48.95Aramid plates are for high-performance applications; Red Eagle organic plates are for OEM replacement, Increased surface area for decreased slipping, Increases holding while decreasing heat generation, Can be run wet or dry, Meets or exceeds OEM...11310468- SKU:
- 11310468
- Availability:
- Ships Same Business Day
- Weight:
- 0.67 LBS
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- FRICTION PLATE SET
- TYPE:
- CLUTCH
- UNITS:
- 6 PACK
- FRICTION PLATE MATERIAL:
- ORGANIC
- MODEL:
- RED EAGLE®
$48.95 -
ALTO PRODUCTS Rivera Pro Clutch Plate 320720K220UP1
ALTO PRODUCTS
$15.95Provides a large increase in clutch plate surface for getting horsepower to the rear wheel, Meets or exceeds OEM specifications, Made in the U.S.A.11310497- SKU:
- 11310497
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- FRICTION PLATE
- COLOR/FINISH:
- BLACK
- FRICTION PLATE MATERIAL:
- KEVLAR
- MODEL:
- PRO CLUTCH
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- UNITS:
- EACH
$15.95 -
ALTO PRODUCTS Rivera Pro Clutch Plate - Steel - 0.047" 320721-120UP1
ALTO PRODUCTS
$5.95Provides a large increase in clutch plate surface for getting horsepower to the rear wheel, Meets or exceeds OEM specifications, Made in the U.S.A.11310498- SKU:
- 11310498
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- COLOR/FINISH:
- STEEL
- FRICTION PLATE MATERIAL:
- STEEL
- MODEL:
- PRO CLUTCH
- TYPE:
- CLUTCH
- UNITS:
- EACH
- PRODUCT NAME:
- DRIVE PLATE (STEEL PLATE)
- RIDING STYLE:
- STREET
$5.95 -
ALTO PRODUCTS Rivera Pro Clutch Plate - Steel - 0.080" 320721-200UP1
ALTO PRODUCTS
$7.95Provides a large increase in clutch plate surface for getting horsepower to the rear wheel, Meets or exceeds OEM specifications, Made in the U.S.A.11310499- SKU:
- 11310499
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- FRICTION PLATE MATERIAL:
- STEEL
- MODEL:
- PRO CLUTCH
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- DRIVE PLATE (STEEL PLATE)
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$7.95
