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!
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- Qty in Cart
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- Price
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LA CHOPPERS County Line Derby Cover Derby Cover - Twin Cam - Bronze LA-P106-00Z
LA CHOPPERS
$162.99The stock derby cover is one of the first visual upgrades that sets the tone for your Twin Cam's appearance—why settle for plain when a precision-machined billet cover elevates both form and...11070722- SKU:
- 11070722
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
$162.99 -
LA CHOPPERS County Line Derby Cover Derby Cover - M8 FL - Bronze LA-P106-01Z
LA CHOPPERS
$162.99The stock derby cover on your M8 FL is functional, but it lacks the visual impact and refined engineering that separates a built machine from an assembly-line bike. LA Choppers' billet County Line...11070723- SKU:
- 11070723
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
$162.99 -
PERFORMANCE MACHINE (PM) Race Series Derby Cover - Black Ops 0177-2085-SMB
PERFORMANCE MACHINE (PM)
$164.95If you're running a stock derby cover, you're leaving performance on the table—and aesthetics too. The PM Race Series Derby Cover upgrades both your primary cooling efficiency and your engine's...09402137- SKU:
- 09402137
- Availability:
- Ships Same Business Day
- Weight:
- 1.08 LBS
$164.95 -
PERFORMANCE MACHINE (PM) Race Series Derby Cover - Black Ops 0177-2086-SMB
PERFORMANCE MACHINE (PM)
$164.95Your stock derby cover is holding back both your bike's appearance and cooling efficiency. The PM Race Series Derby Cover delivers the thermal performance of a race-proven design while establishing...09402138- SKU:
- 09402138
- Availability:
- Ships Same Business Day
- Weight:
- 1.93 LBS
$164.95Qty in Cart: 0Quantity:Price:$164.95Subtotal: -
DRAG SPECIALTIES Cush Drive Isolator - RH1250S 78681
DRAG SPECIALTIES
$44.89The Cush Drive Isolator absorbs drivetrain shock and vibration, protecting your transmission and rear-end components from the stress of aggressive acceleration and hard launches. This is essential...12102753- SKU:
- 12102753
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
$44.89 -
BARNETT Clutch Kit - Pan America/Sportster 304-30-20019
BARNETT
$284.71A reliable clutch is non-negotiable for consistent power delivery and longevity, whether you're pushing your Pan America or Sportster hard on the street or track. BARNETT's carbon fiber friction...11313881- SKU:
- 11313881
- Availability:
- Ships Same Business Day
- Weight:
- 1.66 LBS
$284.71 -
BAKER DRIVETRAIN Cruise Drive Smooth Shift Kit - Twin Cam - N1 Shift Pattern CD6N1-602
BAKER DRIVETRAIN
$499.00Stock shift drums compromise precision and demand excessive rider input on every gear change. The BAKER Drivetrain Cruise Drive Smooth Shift Kit eliminates the lag, friction, and dead zones that slow...11100118- SKU:
- 11100118
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
$499.00 -
BAKER DRIVETRAIN Cruise Drive Smooth Shift Kit - M8 - N1 Shift Pattern CD6N1-602-M8
BAKER DRIVETRAIN
$499.00Stock shift drums compromise both precision and durability—forcing riders to work harder for consistent shifts and risking mechanical failure under aggressive riding. The BAKER Drivetrain Cruise...11100119- SKU:
- 11100119
- Availability:
- Ships Same Business Day
- Weight:
- 2.54 LBS
$499.00 -
BAKER DRIVETRAIN Cruise Drive Smooth Shift Kit - Twin Cam CD6-602
BAKER DRIVETRAIN
$499.00Smooth, precise shifting separates a dialed-in transmission from one that fights you on every gear change. The Baker Drivetrain Cruise Drive Smooth Shift Kit applies proven six-speed overdrive...11100116- SKU:
- 11100116
- Availability:
- Ships Same Business Day
- Weight:
- 3.33 LBS
$499.00 -
BAKER DRIVETRAIN Cruise Drive Smooth Shift Kit - M8 CD6-602-M8
BAKER DRIVETRAIN
$499.00Smooth, precise shifting is non-negotiable on the track or the street—and stock shift drums simply can't deliver the consistency you need when it matters most. The BAKER Drivetrain Cruise Drive...11100117- SKU:
- 11100117
- Availability:
- Ships Same Business Day
- Weight:
- 3.52 LBS
$499.00 -
BARNETT Clutch Plate Kit - Indian - Kevlar 303-40-10025
BARNETT
$306.32Stock clutch plates wear out under aggressive riding and racing conditions, leading to slippage, inconsistent power delivery, and premature failure. The BARNETT Kevlar Clutch Plate Kit restores full...11313909- SKU:
- 11313909
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
$306.32 -
BARNETT Extra Plate Clutch Kit - Kevlar - Indian 304-40-10030
BARNETT
$315.50A stock clutch struggles to handle sustained high-rpm riding and aggressive launches—especially on modified or turbocharged Indian platforms. The BARNETT Extra Plate Clutch Kit addresses this with...11313910- SKU:
- 11313910
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
$315.50 -
BARNETT Scorpion Clutch Basket Assembly - Cable Actuated 698-30-40017
BARNETT
$1,242.73If you're running a cable-actuated clutch system and experiencing slippage or inconsistent engagement, a worn clutch basket is often the culprit. The BARNETT Scorpion Clutch Basket Assembly delivers...11300834- SKU:
- 11300834
- Availability:
- Ships Same Business Day
- Weight:
- 12.90 LBS
$1,242.73 -
BARNETT Scorpion Clutch Basket Assembly - Hydraulic 698-30-60017
BARNETT
$1,242.73If you're running a hydraulic clutch system and need reliable engagement under high-load conditions, the BARNETT Scorpion Clutch Basket Assembly delivers the surface area and durability required for...11300835- SKU:
- 11300835
- Availability:
- Ships Same Business Day
- Weight:
- 12.70 LBS
$1,242.73 -
BARNETT Scorpion Clutch Basket Assembly With Lock-Up - Cable Actuated 698-30-53017
BARNETT
$1,618.56If you're running a cable-actuated clutch system and want genuine lock-up performance without fabricating a custom primary cover, the BARNETT Scorpion delivers exactly that. The redesigned billet...11300836- SKU:
- 11300836
- Availability:
- Ships Same Business Day
- Weight:
- 13.80 LBS
$1,618.56 -
BARNETT Scorpion Clutch Basket Assembly With Lock-Up - Hydraulic 698-30-63017
BARNETT
$1,618.56If you're building or upgrading a high-performance clutch system, you need a basket assembly that can handle increased power delivery without sacrificing shift quality or requiring extensive...11300837- SKU:
- 11300837
- Availability:
- Ships Same Business Day
- Weight:
- 13.30 LBS
$1,618.56 -
BARNETT Scorpion Low-Profile Clutch Assembly With Lock-Up - Touring 608-30-23017
BARNETT
$1,096.06If you're running a high-performance engine or planning to, your stock clutch won't cut it. The BARNETT Scorpion Low-Profile Clutch Assembly delivers the holding power and precise engagement you need...11300843- SKU:
- 11300843
- Availability:
- Ships Same Business Day
- Weight:
- 10.80 LBS
$1,096.06 -
TRASK Power Plate Kit - High Pressure Plate Spring Kit - Gold - M8/CVO TM-2012
TRASK
$149.95If you're running a high-output M8 and experiencing clutch slip under hard acceleration, the TRASK Power Plate Kit delivers the clamping force you need without replacing your entire clutch assembly...11313911- SKU:
- 11313911
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$149.95 -
DRAG SPECIALTIES Rear Sprocket - 48 Tooth - Pan America D26-0160-48
DRAG SPECIALTIES
$86.62A properly sized rear sprocket is foundational to your Pan America's acceleration, top-end speed, and overall drivetrain efficiency. The DRAG SPECIALTIES 48-tooth rear sprocket delivers the exact...12102765- SKU:
- 12102765
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
$86.62 -
DRAG SPECIALTIES Front Sprocket - 19 Tooth - Pan America D26-0047-19
DRAG SPECIALTIES
$58.80A front sprocket swap is one of the quickest ways to dial in your Pan America's acceleration and top-end characteristics without major engine work. The 19-tooth DRAG SPECIALTIES sprocket reduces your...12122054- SKU:
- 12122054
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$58.80Qty in Cart: 0Quantity:Price:$58.80Subtotal:
