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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On Sale
Belt Drives Ltd 2" Belt Drive Kit for 1990-2006 Harley-Davidson Softail EV-600-B
BELT DRIVES LTD.
MSRP: $3,191.95Now: $2,872.76Was: $3,191.95Experience superior performance with the Belt Drives Ltd. 2" EV-600-B Belt Drive Kit, designed for seamless operation and reliability. This comprehensive kit includes everything you need for easy installation and optimal functionality, ensuring a smooth...11200257- SKU:
- 11200257
- Availability:
- Ships Same Business Day
- Weight:
- 37.55 LBS
- STYLE:
- RIBBED
- MATERIAL:
- KEVLAR
- TOOTH COUNT:
- 142
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 2'
MSRP: $3,191.95Now: $2,872.76Was: $3,191.95Qty in Cart: 0Quantity:Price:MSRP: $3,191.95Now: $2,872.76Was: $3,191.95Subtotal: -
On Sale
ARLEN NESS Derby Cover 700-005
ARLEN NESS
MSRP: $169.95Now: $154.65Was: $169.95Machined from 6061-T6 billet aluminum, Chrome hardware and gasket included, Matching point and inspection covers available separately, Sold each11070650- SKU:
- 11070650
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ORANGE ANODIZED
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
MSRP: $169.95Now: $154.65Was: $169.95 -
On Sale
ARLEN NESS Derby Cover 700-004
ARLEN NESS
MSRP: $169.95Now: $154.65Was: $169.95Machined from 6061-T6 billet aluminum, Chrome hardware and gasket included, Matching point and inspection covers available separately, Sold each11070649- SKU:
- 11070649
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- COLOR/FINISH:
- GOLD ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
- MOUNTING STYLE:
- 5 HOLE
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $169.95Now: $154.65Was: $169.95Qty in Cart: 0Quantity:Price:MSRP: $169.95Now: $154.65Was: $169.95Subtotal: -
On Sale
ARLEN NESS Derby Cover 700-003
ARLEN NESS
MSRP: $169.95Now: $154.65Was: $169.95Machined from 6061-T6 billet aluminum, Chrome hardware and gasket included, Matching point and inspection covers available separately, Sold each11070648- SKU:
- 11070648
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLUE ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
MSRP: $169.95Now: $154.65Was: $169.95 -
On Sale
ARLEN NESS Derby Cover 700-000
ARLEN NESS
MSRP: $159.95Now: $145.55Was: $159.95Machined from 6061-T6 billet aluminum, Chrome hardware and gasket included, Matching point and inspection covers available separately, Sold each11070647- SKU:
- 11070647
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK ANODIZED
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MOUNTING STYLE:
- 5 HOLE
MSRP: $159.95Now: $145.55Was: $159.95 -
On Sale
BARNETT Derby Cover Spacer 686-30-16100
BARNETT
MSRP: $82.04Now: $73.84Was: $82.04Required when installing a Scorpion Lock-up clutch in 2015 FLHTCUL and FLHTKL Big Twins and all 2016-19 FL's using the OE derby cover., Includes billet aluminum spacer plate, O-ring and chrome Torx fasteners, This spacer is NOT required if using Barnett...11070632- SKU:
- 11070632
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- DERBY COVER
- PRODUCT NAME:
- SPACER
- UNITS:
- KIT
MSRP: $82.04Now: $73.84Was: $82.04 -
On Sale
ARLEN NESS Transmission Cover - Black 03-826
ARLEN NESS
MSRP: $179.95Now: $163.75Was: $179.95Replaces the OEM cover, Includes necessary gaskets and hardware, Matching transmission top covers sold separately, Hydraulic style cover mounts on top of OEM hydraulic unit found on '14-up Touring models with fairing, Cable style cover replaces the OEM...11050244- SKU:
- 11050244
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- COLOR/FINISH:
- BLACK ANODIZED
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
MSRP: $179.95Now: $163.75Was: $179.95 -
On Sale
ARLEN NESS Transmission Cover - Titanium 03-815
ARLEN NESS
Now: $114.66Was: $126.00Replaces the OEM cover, Includes necessary gaskets and hardware, Matching transmission top covers sold separately, Hydraulic style cover mounts on top of OEM hydraulic unit found on '14-up Touring models with fairing, Cable style cover replaces the OEM...11050243- SKU:
- 11050243
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- TITANIUM ANODIZED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
Now: $114.66Was: $126.00 -
On Sale
ARLEN NESS Transmission Cover - Black 03-814
ARLEN NESS
MSRP: $179.95Now: $163.75Was: $179.95Replaces the OEM cover, Includes necessary gaskets and hardware, Matching transmission top covers sold separately, Hydraulic style cover mounts on top of OEM hydraulic unit found on '14-up Touring models with fairing, Cable style cover replaces the OEM...11050242- SKU:
- 11050242
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK ANODIZED
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- MOUNTING STYLE:
- 6 HOLE
- UNITS:
- EACH
MSRP: $179.95Now: $163.75Was: $179.95 -
On Sale
ARLEN NESS Black 10 Gauge Top Transmission Cover 03-863
ARLEN NESS
MSRP: $199.95Now: $181.95Was: $199.95Machined from billet aluminum, Includes necessary gasket and hardware11050213- SKU:
- 11050213
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- MODEL:
- 10 GAUGE
- PRODUCT NAME:
- TOP COVER
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- BLACK
- MOUNTING STYLE:
- 6 HOLE
- UNITS:
- EACH
MSRP: $199.95Now: $181.95Was: $199.95 -
On Sale
ARLEN NESS Chrome 10 Gauge Top Transmission Cover 03-862
ARLEN NESS
MSRP: $199.95Now: $181.95Was: $199.95Machined from billet aluminum, Includes necessary gasket and hardware11050212- SKU:
- 11050212
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MOUNTING STYLE:
- 6 HOLE
- UNITS:
- EACH
- PRODUCT NAME:
- TOP COVER
- TYPE:
- TRANSMISSION
MSRP: $199.95Now: $181.95Was: $199.95 -
ACCUTRONIX Transmission Dipstick - Chrome - Big Twin TDS01-KC
ACCUTRONIX
$63.95Replacement dipstick that really cleans up the look of the transmission11050215- SKU:
- 11050215
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- DIPSTICK
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- STYLE:
- KNURLED
$63.95 -
ACCUTRONIX Transmission Dipstick - Black - Big Twin TDS01-KN
ACCUTRONIX
$63.95Replacement dipstick that really cleans up the look of the transmission11050216- SKU:
- 11050216
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- DIPSTICK
- UNITS:
- EACH
- TYPE:
- TRANSMISSION
- STYLE:
- KNURLED
- COLOR/FINISH:
- BLACK ANODIZED
- RIDING STYLE:
- STREET
$63.95 -
On Sale
EBC Clutch Kit SRK7006
EBC
MSRP: $308.88Now: $293.44Was: $308.88Include aramid fiber-lined friction plates, steel separator plates and springs, Designed to withstand the rigors of hard street and racetrack use11313271- SKU:
- 11313271
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- FRICTION PLATE SET
- PRODUCT NAME:
- CLUTCH KIT
MSRP: $308.88Now: $293.44Was: $308.88 -
On Sale
EBC Clutch Kit SRK7008
EBC
MSRP: $354.17Now: $336.46Was: $354.17Include aramid fiber-lined friction plates, steel separator plates and springs, Designed to withstand the rigors of hard street and racetrack use11313273- SKU:
- 11313273
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- FRICTION PLATE SET
MSRP: $354.17Now: $336.46Was: $354.17 -
On Sale
EBC Clutch Kit SRK7010
EBC
MSRP: $349.34Now: $331.87Was: $349.34Include aramid fiber-lined friction plates, steel separator plates and springs, Designed to withstand the rigors of hard street and racetrack use11313275- SKU:
- 11313275
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- FRICTION PLATE SET
MSRP: $349.34Now: $331.87Was: $349.34 -
Jims Primary Bearing Upgrade 1990-2006 Harley-Davidson Softail Springer 8960
JIMS
$53.95Enhance the performance and reliability of your motorcycle with the JIMS Primary Bearing Kit 8960. Designed for both open primary systems and high-output applications, this kit features a double row ball bearing that ensures superior durability and...11200242- SKU:
- 11200242
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- BEARING KIT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
$53.95 -
Jims Fat 5 5-Speed Overdrive Super Kit 2002-2006 Harley-Davidson FLHR Road King 8274
JIMS
$3,961.95Introducing the JIMS Fat 5™ 5-Speed Overdrive Super Kit 8274, a cutting-edge transmission upgrade designed to enhance your riding experience. With its innovative chrome trap door design, this gear cluster seamlessly integrates into your stock...11030011- SKU:
- 11030011
- Availability:
- Ships Same Business Day
- Weight:
- 31.00 LBS
- FIFTH GEAR RATIO:
- 0.886:1
- RIDING STYLE:
- STREET
- STYLE:
- CUSTOM REPLACEMENT
- STYLE:
- OVERDRIVE
- THIRD GEAR RATIO:
- 1.31:1
- FIRST GEAR RATIO:
- 2.91:1
- PRODUCT NAME:
- TRANSMISSION KIT
- SECOND GEAR RATIO:
- 1.93:1
- TRANSMISSION TYPE:
- 5 SPEED
- FOURTH GEAR RATIO:
- 1.00:1
- MODEL:
- FAT 5
- TYPE:
- GEAR SET
- UNITS:
- KIT
$3,961.95 -
Jims Shift Fork Shaft for Harley-Davidson 1987-2006 Big Twin 34088-87
JIMS
$30.95Enhance your motorcycle's performance with the JIMS Shift Fork Shaft 34088-87, expertly crafted in the U.S.A. This precision-engineered component ensures optimal shifting and durability, making it an essential upgrade for any serious rider. Trust in JIMS...DS194250- SKU:
- DS194250
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SHIFT FORK SHAFT
- TRANSMISSION TYPE:
- 5 SPEED
- TRANSMISSION TYPE:
- 6 SPEED
- UNITS:
- EACH
- MATERIAL:
- STEEL
$30.95 -
Jims Splined Clutch Mainshaft for 1991-2006 Harley-Davidson Big Twin 5-Speed 35042-91
JIMS
$466.95The JIMS Mainshaft Splined Clutch 35042-91 is engineered for high-performance applications, ensuring optimal power transfer and reliability for your motorcycle. Crafted with precision, this clutch component is designed to enhance your riding experience...DS199492- SKU:
- DS199492
- Availability:
- Ships Same Business Day
- Weight:
- 2.56 LBS
- PRODUCT NAME:
- MAINSHAFT
- TRANSMISSION TYPE:
- 5 SPEED
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$466.95
