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 Scorpion Clutch 608-30-10009
BARNETT
MSRP: $720.24Now: $648.22Was: $720.24If you're running a high-revving engine or pushing boost levels, your stock clutch won't cut it—slippage under load will kill your power delivery and leave performance on the table. The BARNETT...11300138- SKU:
- 11300138
- Availability:
- Ships Same Business Day
- Weight:
- 9.70 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- BILLET ALUMINUM
- UNITS:
- KIT
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
- MODEL:
- SCORPION
MSRP: $720.24Now: $648.22Was: $720.24 -
On Sale
BARNETT '07-'18 Big Twin Black/Clear Derby Cover 343-30-44013
BARNETT
MSRP: $246.48Now: $221.83Was: $246.48Monitor your clutch engagement in real-time with a clear view of your primary drive system—no guesswork, no surprises. This BARNETT derby cover replaces your stock unit with a durable polycarbonate...11070437- SKU:
- 11070437
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- SCORPION SERIES
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $246.48Now: $221.83Was: $246.48 -
On Sale
BARNETT '99-'06 Big Twin Black/Clear Derby Cover 343-30-44006
BARNETT
MSRP: $246.48Now: $221.83Was: $246.48A quality derby cover does more than protect your primary—it showcases your bike's mechanical heartbeat. The BARNETT Big Twin Derby Cover combines clean aesthetics with functional visibility, giving...11070439- SKU:
- 11070439
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SCORPION SERIES
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $246.48Now: $221.83Was: $246.48 -
RSD Clarity Derby Cover - Contrast Cut 0177-2007-BM
RSD
$306.95The RSD Clarity Derby Cover gives you unobstructed visibility into your engine's internal operation, making it an essential upgrade for builders and enthusiasts who want to monitor their top-end...09401063- SKU:
- 09401063
- Availability:
- Ships Same Business Day
- Weight:
- 1.77 LBS
- COLOR/FINISH:
- ALUMINUM
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- STYLE:
- CONTRAST CUT™
- UNITS:
- EACH
- MODEL:
- CLARITY
- TYPE:
- DERBY
$306.95Qty in Cart: 0Quantity:Price:$306.95Subtotal: -
RSD Hydraulic Clutch Cover 0177-2066-SMB
RSD
$470.95A hydraulic clutch conversion eliminates cable stretch and gives you precise, consistent engagement every time you hit the track. If you're running forced induction or high-RPM applications,...11050232- SKU:
- 11050232
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- COLOR/FINISH:
- BLACK OPS™
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- HYDRAULIC CLUTCH ACTUATOR
- MODEL:
- CLARITY
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$470.95 -
RSD 6-Speed Clarity Transmission Cover - Contrast Cut 0177-2022-BM
RSD
$438.95If you're running a cable-actuated clutch setup, you don't have to compromise on aesthetics or functionality. The RSD 6-Speed Clarity Transmission Cover lets you display your clutch actuation...11050048- SKU:
- 11050048
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- MODEL:
- CLARITY
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- TRANSMISSION TYPE:
- 6-SPEED
- COLOR/FINISH:
- CONTRAST CUT™
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- CHROME
- MATERIAL:
- POLYCARBONATE
- UNITS:
- EACH
$438.95 -
On Sale
JOKER MACHINE Derby Cover - Lucky 7 921017L
JOKER MACHINE
MSRP: $138.95Now: $125.06Was: $138.95A derby cover serves as both a protective barrier and a visual statement on your engine. The Joker Machine Lucky 7 design combines precision machining with authentic custom aesthetics, shielding your...DS375259- SKU:
- DS375259
- Availability:
- Ships Same Business Day
- Weight:
- 0.98 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- STYLE:
- LUCKY-7
- TYPE:
- DERBY
MSRP: $138.95Now: $125.06Was: $138.95 -
DP BRAKES Clutch Kit DPHK603
DP BRAKES
$215.95Specifically designed to provide fade and slip-free operation, Also provides superior gear shifting and extended life, Each kit includes friction plates and steel drive plates; springs sold separately11313376- SKU:
- 11313376
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- RIDING STYLE:
- STREET
- STYLE:
- XL
- DRIVE PLATE MATERIAL:
- STEEL
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
$215.95Qty in Cart: 0Quantity:Price:$215.95Subtotal: -
CYCLE VISIONS Rear Wheel Spacer - '00-'20 - .250" CV-2000
CYCLE VISIONS
$69.99Made from 6061 T-6 aluminum and features a machined finish, Made to work with stock H-D aluminum hubs, All spacers/adapters are flanged for perfect alignment, May require longer bolts., Will not work...12010053- SKU:
- 12010053
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
- MATERIAL:
- 6061-T6 ALUMINUM
- UNITS:
- EACH
- TYPE:
- PULLEY
- WIDTH IMPERIAL:
- 0.250'
- FEATURES:
- FOR '00+ WHEELS
- MODEL:
- THE CORRECT
- COLOR/FINISH:
- MACHINED
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
$69.99 -
CYCLE VISIONS Rear Wheel Adapter - '99 - .075" CV-2002
CYCLE VISIONS
$69.99Made from 6061 T-6 aluminum and features a machined finish, Made to work with stock H-D aluminum hubs, All spacers/adapters are flanged for perfect alignment, May require longer bolts., Will not work...12010055- SKU:
- 12010055
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- FEATURES:
- FOR '84 - '89 WHEELS
- PRODUCT NAME:
- ADAPTER
- MODEL:
- THE CORRECT
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- MATERIAL:
- 6061-T6 ALUMINUM
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 0.075'
- COLOR/FINISH:
- MACHINED
- MOUNTING POSITION:
- REAR
$69.99 -
CYCLE VISIONS Rear Wheel Spacer/Adapter - '00-'20 - .375" CV-2003
CYCLE VISIONS
$99.19Made from 6061 T-6 aluminum and features a machined finish, Made to work with stock H-D aluminum hubs, All spacers/adapters are flanged for perfect alignment, May require longer bolts., Will not work...12010056- SKU:
- 12010056
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MODEL:
- THE CORRECT
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- COLOR/FINISH:
- MACHINED
- FEATURES:
- FOR '84+ WHEELS
- PRODUCT NAME:
- SPACER
- WIDTH IMPERIAL:
- 0.375'
- MATERIAL:
- 6061-T6 ALUMINUM
- UNITS:
- EACH
$99.19 -
CYCLE VISIONS Rear Wheel Spacer/Adapter - '00-'20 - .500" CV-2004
CYCLE VISIONS
$99.19Made from 6061 T-6 aluminum and features a machined finish, Made to work with stock H-D aluminum hubs, All spacers/adapters are flanged for perfect alignment, May require longer bolts., Will not work...12010057- SKU:
- 12010057
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- FEATURES:
- FOR '84+ WHEELS
- PRODUCT NAME:
- SPACER
- WIDTH IMPERIAL:
- 0.500'
- COLOR/FINISH:
- MACHINED
- MODEL:
- THE CORRECT
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- MATERIAL:
- 6061-T6 ALUMINUM
- UNITS:
- EACH
- TYPE:
- PULLEY
$99.19 -
CYCLE VISIONS Rear Wheel Spacer - '00-'20 - .625" CV-2005
CYCLE VISIONS
$87.99Made from 6061 T-6 aluminum and features a machined finish, Made to work with stock H-D aluminum hubs, All spacers/adapters are flanged for perfect alignment, May require longer bolts., Will not work...12010149- SKU:
- 12010149
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MODEL:
- THE CORRECT
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- MATERIAL:
- 6061-T6 ALUMINUM
- UNITS:
- EACH
- COLOR/FINISH:
- MACHINED
- FEATURES:
- FOR '84+ WHEELS
- PRODUCT NAME:
- SPACER
- WIDTH IMPERIAL:
- 0.625'
$87.99 -
CYCLE VISIONS Rear Wheel Spacer - '00-'20 - .100" CV-2008
CYCLE VISIONS
$60.49Made from 6061 T-6 aluminum and features a machined finish, Made to work with stock H-D aluminum hubs, All spacers/adapters are flanged for perfect alignment, May require longer bolts., Will not work...12010099- SKU:
- 12010099
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- COLOR/FINISH:
- MACHINED
- MATERIAL:
- 6061-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- FEATURES:
- FOR '00+ WHEELS
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 0.100'
- MODEL:
- THE CORRECT
- TYPE:
- PULLEY
$60.49 -
On Sale
BARNETT Scorpion Clutch 608-30-10098
BARNETT
MSRP: $720.24Now: $648.22Was: $720.24If you're running increased power or simply demand smoother, more controlled engagement off the line, the BARNETT Scorpion Clutch delivers the capacity and progressive bite you need without...DS223720- SKU:
- DS223720
- Availability:
- Ships Same Business Day
- Weight:
- 9.28 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- CLUTCH ASSEMBLY
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MODEL:
- SCORPION
MSRP: $720.24Now: $648.22Was: $720.24 -
On Sale
BARNETT Extra Plate Clutch Kit 307-30-10011
BARNETT
MSRP: $244.29Now: $219.86Was: $244.29A clutch kit that demands precision engagement is non-negotiable for high-performance applications—especially when you're pushing power through the drivetrain. BARNETT's Extra Plate Clutch Kit...DS223739- SKU:
- DS223739
- Availability:
- Ships Same Business Day
- Weight:
- 2.06 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- CLUTCH PLATE KIT
- RIDING STYLE:
- STREET
- DRIVE PLATE MATERIAL:
- STEEL
- FRICTION PLATE MATERIAL:
- ARAMID FIBER
MSRP: $244.29Now: $219.86Was: $244.29 -
On Sale
Belt Drives Ltd 11mm Belt Drive Kit for 1965-1984 Harley-Davidson Shovelhead Electric Start 4-Speed 47-31SE-4
BELT DRIVES LTD.
MSRP: $905.38Now: $860.11Was: $905.38If you're running a carbureted Shovelhead with an electric starter, a belt drive system eliminates the mechanical complexity of traditional chain drives while delivering smoother power delivery and...DS360106- SKU:
- DS360106
- Availability:
- Ships Same Business Day
- Weight:
- 11.25 LBS
- WIDTH IMPERIAL:
- 1-1/2'
- UNITS:
- KIT
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
MSRP: $905.38Now: $860.11Was: $905.38 -
On Sale
Belt Drives Ltd 11mm Belt Drive Kit for 1965-1984 Harley-Davidson Shovelhead Kick Start Spline Shaft 47-31SK-3
BELT DRIVES LTD.
MSRP: $826.15Now: $784.84Was: $826.15If you're running a classic Shovelhead with a kick-start spline shaft, the belt drive system is critical to reliable engine starting and overall drivetrain longevity. Belt Drives Ltd's 11mm kit...DS360107- SKU:
- DS360107
- Availability:
- Ships Same Business Day
- Weight:
- 10.13 LBS
- WIDTH IMPERIAL:
- 1-1/2'
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- COLOR/FINISH:
- ANODIZED
MSRP: $826.15Now: $784.84Was: $826.15 -
On Sale
Belt Drives Ltd 11mm Belt Drive Kit for 1948-1954 Harley-Davidson FL 47-31TK-1
BELT DRIVES LTD.
MSRP: $764.62Now: $726.39Was: $764.62If you're running a classic Harley-Davidson FL from the pre-1955 era, a belt drive conversion eliminates the maintenance headaches of chain lubrication while delivering smoother power delivery to the...DS360109- SKU:
- DS360109
- Availability:
- Ships Same Business Day
- Weight:
- 8.80 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- WIDTH IMPERIAL:
- 1-1/2'
MSRP: $764.62Now: $726.39Was: $764.62 -
On Sale
Belt Drives Ltd Compensator Sprocket 25 Tooth Harley-Davidson Softail 1984-1993 CS-25A-1
BELT DRIVES LTD.
MSRP: $178.77Now: $169.83Was: $178.77Stock compensator sprockets rely on springs that wear out, absorb power, and complicate maintenance. The Belt Drives Ltd Compensator Sprocket eliminates this weakness with a three-piece design that...11015001- SKU:
- 11015001
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- RIDING STYLE:
- STREET
- TYPE:
- COMPENSATING
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 25
- UNITS:
- EACH
MSRP: $178.77Now: $169.83Was: $178.77
