Harley Primary Drive Systems and Parts
Harley-Davidson Primary Drive Systems & Parts at JJ Motorsports
Upgrade your Harley's primary drive with premium belt drive systems and components from JJ Motorsports, featuring high-strength pulleys, replacement belts, and complete kits for smoother power transfer, reduced maintenance, and classic open-primary style on Evo, Twin Cam, and Big Twin models. These durable parts deliver reliable performance and timeless looks.
Shop Belt Drives Ltd primary systems for race-proven quality. Explore related categories such as Harley drivetrain for clutches and chains, or Harley for exhaust and suspension to complete your open-primary build.
Top Harley-Davidson Primary Drive Systems & Parts
- Belt Drives Ltd Transmission Pulley TP-30 – 30-tooth rear transmission pulley; precision-machined for belt drive conversions on Evo and Twin Cam.
- Belt Drives Ltd Replacement Belt BDL-132 – High-strength 132-tooth replacement belt; 8mm pitch for long life on open primary systems.
- Belt Drives Ltd Belt Drive Evo 16BH-2C – Complete 2-inch belt drive kit for Evo engines; includes clutch, pulleys, and guard for classic open-primary style.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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On Sale
Belt Drives Ltd Starter Pinion Gear for Harley Davidson FLSTFI Fat Boy 2001-2006 PG-100
BELT DRIVES LTD.
MSRP: $88.95Now: $80.06Was: $88.95If you're running a BDL Belt Drive clutch system on your Fat Boy, your starter pinion gear needs to match that precision—and the PG-100 is engineered specifically for that job. A worn or incompatible pinion gear leads to hard starts, grinding noise, and...21100067- SKU:
- 21100067
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- LENGTH:
- 82,6 MM (3-1/4')
- LENGTH IMPERIAL:
- 3-1/4'
- TOOTH COUNT:
- 9
- LENGTH METRIC:
- 82.6 MM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PINION GEAR
- UNITS:
- KIT
MSRP: $88.95Now: $80.06Was: $88.95 -
On Sale
Belt Drives Ltd Compensator Sprocket 24 Tooth Harley-Davidson Softail 1986-2006 CS-24A-1
BELT DRIVES LTD.
MSRP: $136.95Now: $123.26Was: $136.95The Belt Drives Ltd Compensator Sprocket delivers measurable improvements in power delivery and drivetrain efficiency by eliminating traditional spring-based designs. This three-piece construction reduces unsprung weight while maintaining precise...11015002- SKU:
- 11015002
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- RIDING STYLE:
- STREET
- TYPE:
- COMPENSATING
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 24
- UNITS:
- EACH
MSRP: $136.95Now: $123.26Was: $136.95 -
On Sale
Belt Drives Ltd Outboard Bearing for 3" Belt Drive Clutches TFBSB-100
BELT DRIVES LTD.
MSRP: $28.95Now: $26.06Was: $28.95If you're running a BDL Belt Drive clutch system, the outboard bearing is critical to maintaining smooth engagement and preventing premature wear under load. A worn or inadequate bearing introduces friction, noise, and can compromise the entire clutch...11200034- SKU:
- 11200034
- Availability:
- Ships Same Business Day
- Weight:
- 0.84 LBS
- PRODUCT NAME:
- OUTBOARD BEARING
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
MSRP: $28.95Now: $26.06Was: $28.95 -
On Sale
Belt Drives Ltd 3" Primary Belt Cover 2025 Harley-Davidson Touring BDC-4C
BELT DRIVES LTD.
MSRP: $687.95Now: $619.16Was: $687.95If you're running a 3" Belt Drives Ltd. open belt drive system, a matching primary belt cover completes the factory-finished look while protecting your drivetrain components from road debris and weather exposure. The BDC-4C delivers the precision fitment...11200049- SKU:
- 11200049
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- MATERIAL:
- BILLET ALUMINUM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $687.95Now: $619.16Was: $687.95 -
On Sale
Belt Drives Ltd Compensator Sprocket 34 Tooth for Harley-Davidson Softail 2007-2021 CS-34A
BELT DRIVES LTD.
MSRP: $302.95Now: $272.66Was: $302.95If you're running a Softail and tired of dealing with worn compensators that compromise drivetrain efficiency, the Belt Drives Ltd Compensator Sprocket delivers measurable improvements in torque management and reliability. This three-piece design...11200292- SKU:
- 11200292
- Availability:
- Ships Same Business Day
- Weight:
- 6.70 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- COMPENSATING
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 34
MSRP: $302.95Now: $272.66Was: $302.95 -
On Sale
Belt Drives Ltd 2007-2017 Softail Belt Drive Kit EVB-8SL
BELT DRIVES LTD.
MSRP: $1,360.95Now: $1,224.86Was: $1,360.95If you're running a '07-'17 Softail and want a primary drive system that balances reliability with genuine performance gains, a closed belt drive eliminates the maintenance headaches of chain systems while delivering smoother power transfer. Belt Drives...11200293- SKU:
- 11200293
- Availability:
- Ships Same Business Day
- Weight:
- 20.40 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TOOTH COUNT:
- 142
- WIDTH IMPERIAL:
- 1-1/2'
MSRP: $1,360.95Now: $1,224.86Was: $1,360.95Qty in Cart: 0Quantity:Price:MSRP: $1,360.95Now: $1,224.86Was: $1,360.95Subtotal: -
On Sale
Belt Drives Ltd. 2.75" Chrome Drive Belt for 2007-Up Softail and 2006-Up Dyna EVO-8SC
BELT DRIVES LTD.
MSRP: $3,511.95Now: $3,160.76Was: $3,511.95A quality belt drive system is foundational to reliable power transmission and longevity in modern Harley-Davidson engines. The Belt Drives Ltd. EVO8SC delivers the durability and precision engineering needed to handle repeated high-demand riding without...11200294- SKU:
- 11200294
- Availability:
- Ships Same Business Day
- Weight:
- 42.47 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 142
- COLOR/FINISH:
- CHROME
- UNITS:
- KIT
- WIDTH IMPERIAL:
- 2-3/4'
MSRP: $3,511.95Now: $3,160.76Was: $3,511.95Qty in Cart: 0Quantity:Price:MSRP: $3,511.95Now: $3,160.76Was: $3,511.95Subtotal: -
On Sale
Belt Drives Ltd 2.75" Drive Belt Black Softail 2007-2017 Dyna 2006-2017 EVO-8SB
BELT DRIVES LTD.
MSRP: $3,087.95Now: $2,779.16Was: $3,087.95A quality primary drive system is foundational to reliable power transmission and smooth operation on your Harley. The BDL 2.75" Drive Belt delivers consistent engagement and reduced drivetrain wear through a precision ball-bearing lockup clutch, while...11200295- SKU:
- 11200295
- Availability:
- Ships Same Business Day
- Weight:
- 38.00 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- WIDTH IMPERIAL:
- 2-3/4'
- COLOR/FINISH:
- BLACK ANODIZED
- TOOTH COUNT:
- 142
MSRP: $3,087.95Now: $2,779.16Was: $3,087.95 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 2007-2017 Harley-Davidson Softail and Dyna Models EVO-8S-2C
BELT DRIVES LTD.
MSRP: $3,510.95Now: $3,159.86Was: $3,510.95The stock belt drive on your 2007-2017 Softail or Dyna is your weakest link—undersized, inefficient, and prone to slippage under load. Belt Drives Ltd's 2" Open Belt Drive Kit replaces that weak point with a precision-engineered system that delivers 60%...11200296- SKU:
- 11200296
- Availability:
- Ships Same Business Day
- Weight:
- 41.13 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 2'
- PRODUCT NAME:
- BELT DRIVE KIT
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- TOOTH COUNT:
- 142
- MATERIAL:
- KEVLAR
- STYLE:
- RIBBED
- UNITS:
- KIT
MSRP: $3,510.95Now: $3,159.86Was: $3,510.95Qty in Cart: 0Quantity:Price:MSRP: $3,510.95Now: $3,159.86Was: $3,510.95Subtotal: -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 2017-2019 Harley-Davidson Touring EV2PH-B17-B
BELT DRIVES LTD.
MSRP: $3,469.95Now: $3,122.96Was: $3,469.95If you're running a 2017-2019 Harley-Davidson Touring and want to maximize primary drive efficiency while commanding attention on the road, Belt Drives Ltd's 2" Open Belt Drive Kit delivers the precision engineering and visual impact you're after. The...11200397- SKU:
- 11200397
- Availability:
- Ships Same Business Day
- Weight:
- 36.72 LBS
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 52
- TOOTH COUNT:
- 69
- WIDTH IMPERIAL:
- 2'
- SIZE IMPERIAL:
- 2'
MSRP: $3,469.95Now: $3,122.96Was: $3,469.95 -
On Sale
Belt Drives Ltd 142 Tooth 2 Inch Wide Primary Drive Belt for Harley-Davidson Softail and Dyna Models BDL-142-2
BELT DRIVES LTD.
MSRP: $185.95Now: $167.36Was: $185.95A worn or compromised primary drive belt directly impacts power delivery and throttle response on your Harley-Davidson Softail or Dyna. The BDL-142-2 replacement belt restores the crisp engagement and efficiency your bike demands, eliminating slippage...11200262- SKU:
- 11200262
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- DRIVE BELT
- WIDTH IMPERIAL:
- 2'
- STYLE:
- RIBBED
- TOOTH COUNT:
- 142
- TYPE:
- PRIMARY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $185.95Now: $167.36Was: $185.95 -
On Sale
Belt Drives Ltd Replacement Belt for 2007-2012 Harley-Davidson Softail Models BDL-142-69
BELT DRIVES LTD.
MSRP: $189.95Now: $170.96Was: $189.95A worn or damaged primary belt compromises power delivery and reliability on your Softail—exactly what you can't afford when you're counting on consistent performance. The BDL-142-69 replacement belt restores optimal clutch engagement and ensures smooth...11200263- SKU:
- 11200263
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- PRODUCT NAME:
- DRIVE BELT
- TOOTH COUNT:
- 142
- STYLE:
- RIBBED
- TYPE:
- PRIMARY
- WIDTH IMPERIAL:
- 2-23/32'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $189.95Now: $170.96Was: $189.95 -
On Sale
Belt Drives Ltd Replacement Belt for 2007-2013 Harley-Davidson Road Glide BDL-132B-KG
BELT DRIVES LTD.
MSRP: $173.95Now: $156.56Was: $173.95Your BDL primary drive system demands a belt that can handle continuous torque transfer without compromise. The BDL-132B-KG replacement belt delivers precision engineering and high-strength construction to keep power flowing smoothly to the rear wheel...11200264- SKU:
- 11200264
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 2'
- TOOTH COUNT:
- 132
- UNITS:
- EACH
- PRODUCT NAME:
- DRIVE BELT
- TYPE:
- PRIMARY
- STYLE:
- RIBBED
MSRP: $173.95Now: $156.56Was: $173.95 -
On Sale
Belt Drives Ltd 3" Belt Drive for 1990-1993 Harley-Davidson FXR Models EVOB-11S-A
BELT DRIVES LTD.
MSRP: $2,871.95Now: $2,584.76Was: $2,871.95If you're running an FXR and want to eliminate the maintenance headaches of chain drive while gaining reliable torque transfer, a quality belt drive system is the upgrade your bike deserves. The Belt Drives Ltd 3" Belt Drive delivers smoother engagement,...11200265- SKU:
- 11200265
- Availability:
- Ships Same Business Day
- Weight:
- 38.10 LBS
- MATERIAL:
- KEVLAR
- PRODUCT NAME:
- BELT DRIVE KIT
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- MATERIAL:
- STEEL
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 3'
MSRP: $2,871.95Now: $2,584.76Was: $2,871.95Qty in Cart: 0Quantity:Price:MSRP: $2,871.95Now: $2,584.76Was: $2,871.95Subtotal: -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 1990-2006 Harley-Davidson Softail Black EV-575-B
BELT DRIVES LTD.
MSRP: $2,794.95Now: $2,515.46Was: $2,794.95If you're running a 1990-2006 Softail and want reliable primary drive performance without compromise, the Belt Drives Ltd EV-575-B delivers the power transfer efficiency your engine demands. The ball-bearing lockup clutch provides 60% more surface...11200227- SKU:
- 11200227
- Availability:
- Ships Same Business Day
- Weight:
- 34.30 LBS
- TOOTH COUNT:
- 142
- MATERIAL:
- KEVLAR
- STYLE:
- RIBBED
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 2'
MSRP: $2,794.95Now: $2,515.46Was: $2,794.95 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 1970-1978 Harley-Davidson Shovelhead SH-500-B
BELT DRIVES LTD.
MSRP: $2,794.95Now: $2,515.46Was: $2,794.95If you're running a 1970-1978 Shovelhead and want reliable power delivery without the slip and wear of chain drive, this Belt Drives Ltd kit delivers the efficiency and durability you need. The ball-bearing lockup clutch provides 60% more surface contact...11200228- SKU:
- 11200228
- Availability:
- Ships Same Business Day
- Weight:
- 34.40 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
- WIDTH IMPERIAL:
- 2'
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- MATERIAL:
- KEVLAR
- STYLE:
- RIBBED
- UNITS:
- KIT
MSRP: $2,794.95Now: $2,515.46Was: $2,794.95Qty in Cart: 0Quantity:Price:MSRP: $2,794.95Now: $2,515.46Was: $2,794.95Subtotal: -
On Sale
Belt Drives Ltd 2" Polished Open Belt Drive Kit for Harley-Davidson Touring Models 1990-2006 EVO-11S-2
BELT DRIVES LTD.
MSRP: $3,355.95Now: $3,020.36Was: $3,355.95A quality belt drive system is fundamental to smooth power delivery and longevity on any Harley-Davidson Touring model. The Belt Drives Ltd 2" Open Belt Drive Kit delivers reliable performance with a ball-bearing lockup clutch that eliminates drivetrain...11200231- SKU:
- 11200231
- Availability:
- Ships Same Business Day
- Weight:
- 34.85 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 2'
- TOOTH COUNT:
- 132
- COLOR/FINISH:
- POLISHED
- STYLE:
- RIBBED
- UNITS:
- KIT
MSRP: $3,355.95Now: $3,020.36Was: $3,355.95 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for Harley-Davidson FXR 1990-2006 Black EVO-11S-2B
BELT DRIVES LTD.
MSRP: $3,590.95Now: $3,231.86Was: $3,590.95Belt drive systems are critical to smooth power delivery and reliability on your FXR, and a worn or inadequate setup compromises both performance and longevity. The Belt Drives Ltd 2" Open Belt Drive Kit delivers the precision engineering and robust...11200232- SKU:
- 11200232
- Availability:
- Ships Same Business Day
- Weight:
- 34.85 LBS
- STYLE:
- RIBBED
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 132
- WIDTH IMPERIAL:
- 2'
MSRP: $3,590.95Now: $3,231.86Was: $3,590.95 -
On Sale
Belt Drives Ltd 2" Shorty Drive Belt for 1970-1978 Harley-Davidson Electra Glide FLH SHS-600
BELT DRIVES LTD.
MSRP: $1,759.95Now: $1,583.96Was: $1,759.95If you're running an electric-start FLH Electra Glide, the factory starter drive system demands regular maintenance to keep your bike reliable. The Belt Drives Ltd Shorty Drive Belt SHS-600 eliminates weak points in your OEM setup with a complete,...11200213- SKU:
- 11200213
- Availability:
- Ships Same Business Day
- Weight:
- 25.30 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 2'
- COLOR/FINISH:
- BLACK
- STYLE:
- RIBBED
- UNITS:
- EACH
- TOOTH COUNT:
- 140
MSRP: $1,759.95Now: $1,583.96Was: $1,759.95 -
On Sale
Belt Drives Ltd Non-Compensator Sprocket Kit for 2006 Harley-Davidson FXDBI Street Bob CDSK-25
BELT DRIVES LTD.
MSRP: $106.95Now: $96.26Was: $106.95Direct drivetrain engagement demands precision components that eliminate unnecessary complexity. The Belt Drives Ltd. Non-Compensator Sprocket Kit removes the compensator assembly entirely, delivering more efficient power transfer to the rear wheel with...11200412- SKU:
- 11200412
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET KIT
- TYPE:
- PRIMARY
MSRP: $106.95Now: $96.26Was: $106.95
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Primary Drive Systems and Parts
- Compatibility: Ensure parts fit your Harley's model (e.g., Evo, Twin Cam, Big Twin, Softail 1986-2006, FL/FLH 1946-1984, FX 1972-1984, Sportster/Buell 1991-2003). Use the vehicle selector for year-specific matches, including belt widths (1-1/2" to 3") and pitches (8mm to 14mm) to avoid power transfer issues.
- Type of Use: For classic open-primary style or kick-start setups, choose complete belt drive kits; street performance benefits from lightweight pulleys and tensioners for smoother operation and reduced weight in daily riding.
- Components and Upgrades: Select belts (132-144 tooth, ribbed), pulleys (30-70 tooth, front/rear), kits (with clutches, guards), tensioners (manual billet), spacers (starter), or adjuster shoes. Focus on hard anodized aluminum for durability and high-strength designs for reliable performance.
- Brand and Quality: Opt for Belt Drives Ltd (BDL) for premium kits and pulleys, Powerstands Racing for chain tensioners, Terry Components for starter spacers, or Baker Drivetrain for adjuster shoes. Prioritize USA-made billet aluminum and anodized finishes for corrosion resistance and longevity.
- Installation and Cost: Most parts are bolt-on with OEM hardware for easy DIY setup; kits may require additional components. Prices range from $49 for adjuster shoes to $651.95 for complete kits—factor in free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models do these primary drive systems support? Systems fit models like Softail (1986-2006), FL/FLH (1946-1984), FX (1972-1984), Sportster/Buell (1991-2003), and more—use the year/make/model filter for exact compatibility.
- How do belt drive kits improve performance? They provide smoother power transfer, reduced maintenance, and classic open-primary looks with high-strength pulleys and belts for durability.
- What is typically included in a belt drive kit? Kits like BDL's include clutches, pulleys, guards, and belts (e.g., 132-144 tooth, 8mm-14mm pitch)—check details for kick-start or specific widths.
- Are tensioners necessary for primary chains? Yes, manual tensioners like Powerstands Racing prevent over-tightening, with billet aluminum construction for easy adjustments.
- What if a part doesn't fit my Harley? Verify model, year, and specifications (e.g., tooth count, width) before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related drivetrain parts? Yes—explore clutches, belts, sprockets, or full drivetrain kits in the Harley drivetrain category to complement your primary drive upgrade.
