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" Open Belt Drive Kit for 2007-2013 Harley-Davidson FLHX Street Glide EVO-13B-2B
BELT DRIVES LTD.
MSRP: $3,590.95Now: $3,231.86Was: $3,590.95A quality belt drive system is fundamental to smooth power delivery and reliable operation on any EVO-powered cruiser. The Belt Drives Ltd 2" Open Belt Drive Kit eliminates the compromises of OEM setups with a ball-bearing lockup clutch that delivers...11200234- SKU:
- 11200234
- Availability:
- Ships Same Business Day
- Weight:
- 34.70 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- STYLE:
- RIBBED
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
- WIDTH IMPERIAL:
- 2'
MSRP: $3,590.95Now: $3,231.86Was: $3,590.95 -
On Sale
Belt Drives Ltd Front Pulley Locking Plate for Harley-Davidson 1985-2006 FLH Models MPLP-100
BELT DRIVES LTD.
MSRP: $33.95Now: $30.56Was: $33.95A secure front pulley is non-negotiable for reliable belt drive performance on your classic Harley. The MPLP-100 locking plate eliminates pulley creep and unwanted movement, protecting your drivetrain from premature wear and potential failure. If you're...11200235- SKU:
- 11200235
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- TYPE:
- PRIMARY
- LENGTH:
- 38,0 MM (1-1/2')
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- LOCKING PLATE
- LENGTH METRIC:
- 38.0 MM
MSRP: $33.95Now: $30.56Was: $33.95 -
On Sale
Belt Drives Ltd 2.75" Drive Belt Polished 2007-Up Softail and 2006-Up Dyna EVO-8S
BELT DRIVES LTD.
MSRP: $3,033.95Now: $2,730.56Was: $3,033.95Belt drive systems are critical to power delivery and overall drivetrain reliability—a weak link here directly impacts acceleration, engagement smoothness, and longevity. The Belt Drives Ltd 2.75" Drive Belt eliminates the guesswork with a purpose-built...11200210- SKU:
- 11200210
- Availability:
- Ships Same Business Day
- Weight:
- 36.00 LBS
- UNITS:
- KIT
- WIDTH IMPERIAL:
- 2-3/4'
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- POLISHED
- TOOTH COUNT:
- 142
MSRP: $3,033.95Now: $2,730.56Was: $3,033.95 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 1970-1978 Harley-Davidson Shovelhead SH-500
BELT DRIVES LTD.
MSRP: $2,556.95Now: $2,301.26Was: $2,556.95If you're running a classic Shovelhead, belt drive reliability directly impacts your power delivery and overall ride quality. This complete kit eliminates the weak points of chain drive systems—no more stretch, slack, or maintenance headaches. With a...11200212- SKU:
- 11200212
- Availability:
- Ships Same Business Day
- Weight:
- 29.80 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- KEVLAR
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 2'
- STYLE:
- RIBBED
- TOOTH COUNT:
- 132
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- RIDING STYLE:
- STREET
MSRP: $2,556.95Now: $2,301.26Was: $2,556.95 -
On Sale
Belt Drives Ltd Competitor Clutch 1970-1983 Harley-Davidson Big Twin CC-100-S
BELT DRIVES LTD.
MSRP: $674.95Now: $607.46Was: $674.95If you're running an open belt drive on your classic Big Twin, clutch engagement and modulation directly impact how effectively you transfer power to the rear wheel. The Belt Drives Ltd Competitor Clutch CC-100-S delivers consistent, predictable bite...11300177- SKU:
- 11300177
- Availability:
- Ships Same Business Day
- Weight:
- 10.05 LBS
- MATERIAL:
- KEVLAR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CLUTCH KIT
- MODEL:
- COMPETITOR
- UNITS:
- KIT
MSRP: $674.95Now: $607.46Was: $674.95 -
On Sale
Belt Drives Ltd 8mm 1 1/2in Belt Drive Kit for 1941-1954 Harley-Davidson FL Models 62-39TK-1
BELT DRIVES LTD.
MSRP: $627.95Now: $565.16Was: $627.95If you're running a classic flathead or panhead Harley from the pre-1955 era, a quality belt drive system is essential for reliable power transfer and longevity. Belt Drives Ltd.'s 8mm kit delivers the precise pulley ratios and durable components needed...11200422- SKU:
- 11200422
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
MSRP: $627.95Now: $565.16Was: $627.95 -
On Sale
Belt Drives Ltd Front Pulley 40T 8mm for 1955-1983 Harley-Davidson Touring and 1971-1983 FXR 40SI
BELT DRIVES LTD.
MSRP: $181.95Now: $163.76Was: $181.95A properly engineered front pulley is critical for maintaining belt drive efficiency and power transmission in your Harley or FXR. The Belt Drives Ltd 40SI delivers the precision machining and durable construction required for reliable performance,...11200425- SKU:
- 11200425
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 40
- PRODUCT NAME:
- FRONT PULLEY
- UNITS:
- EACH
MSRP: $181.95Now: $163.76Was: $181.95 -
On Sale
Belt Drives Ltd 41T Front Pulley for 1971-1983 Harley-Davidson FXR 1955-1983 Touring 41SI
BELT DRIVES LTD.
MSRP: $181.95Now: $163.76Was: $181.95If you're running a classic FXR or Touring model, a worn or undersized front pulley directly impacts your engine's efficiency and belt drive reliability. The Belt Drives Ltd 41T pulley restores proper drive ratios and eliminates slack, ensuring...11200429- SKU:
- 11200429
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- PRODUCT NAME:
- FRONT PULLEY
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 41
MSRP: $181.95Now: $163.76Was: $181.95 -
On Sale
Belt Drives Ltd Front Pulley 31 Tooth 11mm for 1971-1983 Harley-Davidson FXR 31SI
BELT DRIVES LTD.
MSRP: $181.95Now: $163.76Was: $181.95When you're running a classic FXR, your front pulley is mission-critical to reliable power transfer and belt longevity. The Belt Drives Ltd 31SI delivers precision engineering with a hard anodized finish that stands up to real-world abuse, whether you're...11200433- SKU:
- 11200433
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- TOOTH COUNT:
- 31
- PRODUCT NAME:
- FRONT PULLEY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $181.95Now: $163.76Was: $181.95 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 2018-2020 Harley-Davidson Softail Models M18S-B
BELT DRIVES LTD.
MSRP: $3,860.95Now: $3,474.86Was: $3,860.95If you're running a high-horsepower Softail and want reliable power delivery with a custom look, a quality belt drive system is essential. The Belt Drives Ltd 2" Open Belt Drive Kit delivers the precision gear ratios and mechanical stability needed for...11200434- SKU:
- 11200434
- Availability:
- Ships Same Business Day
- Weight:
- 37.60 LBS
- PRODUCT NAME:
- DRIVE BELT
- SIZE IMPERIAL:
- 2'
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
MSRP: $3,860.95Now: $3,474.86Was: $3,860.95 -
On Sale
Belt Drives Ltd Diaphragm Spring Plate 3/8" Bearings 16 Harley-Davidson 11300437
BELT DRIVES LTD.
MSRP: $332.95Now: $299.66Was: $332.95If you're running high-horsepower applications on your Harley-Davidson, clutch slip under hard acceleration isn't just frustrating—it's costing you performance and reliability. The Belt Drives Ltd Diaphragm Spring Plate delivers the clamping force and...11300437- SKU:
- 11300437
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- RIDING STYLE:
- STREET
- TYPE:
- BALL BEARING
MSRP: $332.95Now: $299.66Was: $332.95 -
On Sale
Belt Drives Ltd Competitor Clutch Kit 2007-2020 Harley-Davidson FLHX Street Glide CC-132-BB
BELT DRIVES LTD.
MSRP: $734.95Now: $661.46Was: $734.95If you're running an open belt drive on your Street Glide, clutch engagement directly affects how power transfers from engine to wheel—and inconsistent bite costs you both control and reliability. The Belt Drives Ltd CC-132-BB addresses this with a...11300255- SKU:
- 11300255
- Availability:
- Ships Same Business Day
- Weight:
- 7.80 LBS
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- MATERIAL:
- KEVLAR
- MODEL:
- COMPETITOR
- RIDING STYLE:
- STREET
MSRP: $734.95Now: $661.46Was: $734.95Qty in Cart: 0Quantity:Price:MSRP: $734.95Now: $661.46Was: $734.95Subtotal: -
On Sale
Belt Drives Ltd Competitor Clutch Kit for 1991-2020 Harley Sportster XL CC-140-BB
BELT DRIVES LTD.
MSRP: $674.95Now: $607.46Was: $674.95If you're running an open belt drive system on your Sportster XL, clutch engagement and holding power directly impact your launch consistency and overall reliability. The Belt Drives Ltd Competitor Clutch Kit delivers race-tested aramid friction material...11300222- SKU:
- 11300222
- Availability:
- Ships Same Business Day
- Weight:
- 4.90 LBS
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- MATERIAL:
- KEVLAR
- MODEL:
- COMPETITOR
- RIDING STYLE:
- STREET
MSRP: $674.95Now: $607.46Was: $674.95Qty in Cart: 0Quantity:Price:MSRP: $674.95Now: $607.46Was: $674.95Subtotal: -
On Sale
Belt Drives Ltd Clutch Kit Extra Plate 1941-1984 Harley-Davidson BTX-5E
BELT DRIVES LTD.
MSRP: $228.95Now: $206.06Was: $228.95Stock clutch plates wear out under sustained load, causing slippage and inconsistent power delivery—especially problematic on long rides or when you're pushing your bike hard. The Belt Drives Ltd BTX-5E addresses this with a wider plate design that...11311802- SKU:
- 11311802
- Availability:
- Ships Same Business Day
- Weight:
- 6.10 LBS
- DRIVE PLATE MATERIAL:
- STEEL
- FRICTION PLATE MATERIAL:
- KEVLAR
- PRODUCT NAME:
- DRIVE PLATE (STEEL PLATE)
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- UNITS:
- 10 PIECE KIT
- FRICTION PLATE MATERIAL:
- 6061 T-6 ALUMINUM
MSRP: $228.95Now: $206.06Was: $228.95 -
On Sale
Belt Drives Ltd Steel Clutch Plate 0.120in for Harley-Davidson 2007-2020 CC-130-BP
BELT DRIVES LTD.
MSRP: $13.95Now: $12.56Was: $13.95If you're running a high-demand clutch system on your Harley, stock plates will leave you frustrated with slippage and premature wear. Belt Drives Ltd's Steel Clutch Plate delivers 60% more friction surface, which means confident, consistent engagement...11310861- SKU:
- 11310861
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- TYPE:
- CLUTCH
- UNITS:
- EACH
- DRIVE PLATE MATERIAL:
- STEEL
- MODEL:
- COMPETITOR
- PRODUCT NAME:
- DRIVE PLATE (STEEL PLATE)
- RIDING STYLE:
- STREET
MSRP: $13.95Now: $12.56Was: $13.95Qty in Cart: 0Quantity:Price:MSRP: $13.95Now: $12.56Was: $13.95Subtotal: -
On Sale
Belt Drives Ltd Competitor Clutch Friction Plates 1998-2006 Big Twin CC-130-CP
BELT DRIVES LTD.
MSRP: $130.95Now: $117.86Was: $130.95Stock clutch friction plates struggle under aggressive acceleration and sustained high-load riding—the Competitor Clutch Friction Plates deliver the engagement and heat resistance you need to keep power consistently flowing to the rear wheel. With 60%...11310862- SKU:
- 11310862
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- TYPE:
- CLUTCH
- UNITS:
- SET OF 7
- FRICTION PLATE MATERIAL:
- KEVLAR
- PRODUCT NAME:
- FRICTION PLATE SET
- MODEL:
- COMPETITOR
- RIDING STYLE:
- STREET
MSRP: $130.95Now: $117.86Was: $130.95 -
On Sale
Belt Drives Ltd. Offset Spacer with Screws and Nut 0" IN-STD 11320173
BELT DRIVES LTD.
MSRP: $103.95Now: $93.56Was: $103.95Pulley misalignment kills belt drive efficiency and accelerates wear on both your belt and drive components. This precision-engineered offset spacer from Belt Drives Ltd. ensures your motor pulley sits exactly where it needs to be, maintaining consistent...11320173- SKU:
- 11320173
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- UNITS:
- EACH
- TYPE:
- PULLEY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- SPACER INSERT
- RIDING STYLE:
- STREET
MSRP: $103.95Now: $93.56Was: $103.95 -
On Sale
Belt Drives Ltd Clutch Kit Brute III 2007-2013 Harley-Davidson Touring BDLPCP-0001
BELT DRIVES LTD.
MSRP: $247.95Now: $223.16Was: $247.95A worn or slipping clutch compromises power delivery and creates unpredictable engagement—especially critical on a belt-drive touring bike where reliability matters. The Belt Drives Ltd Clutch Kit Brute III delivers factory-spec performance with...11313169- SKU:
- 11313169
- Availability:
- Ships Same Business Day
- Weight:
- 3.65 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
MSRP: $247.95Now: $223.16Was: $247.95 -
On Sale
Belt Drives Ltd Clutch Plate Kit 1936-1984 Harley-Davidson BDLPCP-0041
BELT DRIVES LTD.
MSRP: $247.95Now: $223.16Was: $247.95A worn or slipping clutch directly impacts your Harley's power delivery and rideability—whether you're cruising or pushing hard on the street or strip. The Belt Drives Ltd Clutch Plate Kit BDLPCP-0041 restores consistent engagement and eliminates chatter...11313177- SKU:
- 11313177
- Availability:
- Ships Same Business Day
- Weight:
- 5.30 LBS
- RIDING STYLE:
- STREET
- TYPE:
- PRO CLUTCH
- UNITS:
- KIT
- PRODUCT NAME:
- CLUTCH PLATE
MSRP: $247.95Now: $223.16Was: $247.95 -
On Sale
Belt Drives Ltd Clutch Plate Kit 1990-2017 Softail Dyna Touring BDLPCP-0050
BELT DRIVES LTD.
MSRP: $247.95Now: $223.16Was: $247.95A worn clutch plate kit compromises both throttle response and reliability—exactly what you can't afford on the track or street. The Belt Drives Ltd Clutch Plate Kit BDLPCP-0050 delivers consistent engagement and durability across the full RPM range,...11313178- SKU:
- 11313178
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- RIDING STYLE:
- STREET
- TYPE:
- BRUTE IV EXTREME
- PRODUCT NAME:
- CLUTCH PLATE
- STYLE:
- NEW STYLE HUB
- TYPE:
- BRUTE III EXTREME
- UNITS:
- KIT
MSRP: $247.95Now: $223.16Was: $247.95
