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 2" Shorty Drive Belt for 1970-1978 Harley-Davidson Electra Glide FLH SHS-600
BELT DRIVES LTD.
MSRP: $2,143.23Now: $2,036.07Was: $2,143.23If 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...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: $2,143.23Now: $2,036.07Was: $2,143.23 -
On Sale
Belt Drives Ltd Non-Compensator Sprocket Kit for 2006 Harley-Davidson FXDBI Street Bob CDSK-25
BELT DRIVES LTD.
MSRP: $139.69Now: $132.71Was: $139.69Direct drivetrain engagement demands precision components that eliminate unnecessary complexity. The Belt Drives Ltd. Non-Compensator Sprocket Kit removes the compensator assembly entirely,...11200412- SKU:
- 11200412
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET KIT
- TYPE:
- PRIMARY
MSRP: $139.69Now: $132.71Was: $139.69 -
On Sale
Belt Drives Ltd Replacement Belt for Harley-Davidson Softail Models 2007-2013 BDL-142
BELT DRIVES LTD.
MSRP: $227.23Now: $215.87Was: $227.23Primary belt wear is inevitable on hard-ridden Softails, but delayed replacement leads to slippage, loss of power transfer, and potential catastrophic drivetrain failure. The BDL-142 from Belt Drives...11200415- SKU:
- 11200415
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- DRIVE BELT
- TOOTH COUNT:
- 142
- WIDTH IMPERIAL:
- 1-1/2'
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
- UNITS:
- EACH
- STYLE:
- RIBBED
MSRP: $227.23Now: $215.87Was: $227.23 -
On Sale
Belt Drives Ltd 3" Belt Drive Kit for 1970-1978 Harley-Davidson FLH Electra Glide SHS-630
BELT DRIVES LTD.
MSRP: $2,416.62Now: $2,295.79Was: $2,416.62If you're running an electric-start FLH Electra Glide and want reliable, smooth power delivery without the complexity of chain drive maintenance, a quality belt drive system is non-negotiable. The...11200417- SKU:
- 11200417
- Availability:
- Ships Same Business Day
- Weight:
- 36.40 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $2,416.62Now: $2,295.79Was: $2,416.62 -
On Sale
Belt Drives Ltd 3" Belt Drive Kit with Starter for 1970-1978 Harley-Davidson FLH SHS-630ST
BELT DRIVES LTD.
MSRP: $2,559.95Now: $2,431.95Was: $2,559.95If you're running a 1970-1978 FLH with electric start, a quality belt drive kit is essential for transferring power efficiently without the maintenance headaches of chain drives. This Belt Drives Ltd...11200418- SKU:
- 11200418
- Availability:
- Ships Same Business Day
- Weight:
- 36.40 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- BELT DRIVE KIT
MSRP: $2,559.95Now: $2,431.95Was: $2,559.95Qty in Cart: 0Quantity:Price:MSRP: $2,559.95Now: $2,431.95Was: $2,559.95Subtotal: -
On Sale
Belt Drives Ltd Clutch Basket for Harley-Davidson Big Twin 2007-2017 Dyna 2006 CDB-720-SG4
BELT DRIVES LTD.
MSRP: $982.31Now: $933.19Was: $982.31If you're running a Big Twin or Dyna and want a clutch basket that outlasts the stock unit, the Belt Drives Ltd CDB-720-SG4 delivers the durability and engagement consistency serious riders demand...11200430- SKU:
- 11200430
- Availability:
- Ships Same Business Day
- Weight:
- 7.45 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- CLUTCH BASKET
- TOOTH COUNT:
- 106
MSRP: $982.31Now: $933.19Was: $982.31 -
On Sale
Belt Drives Ltd Primary Chain Drive System with Clutch for 1979-1983 Harley-Davidson FXE Super Glide CD-1-70
BELT DRIVES LTD.
MSRP: $1,576.46Now: $1,497.64Was: $1,576.46The primary drive system is the mechanical backbone of your FXE's engine, and worn or inadequate components directly compromise throttle response, power delivery, and clutch modulation. The Belt...DS191014- SKU:
- DS191014
- Availability:
- Ships Same Business Day
- Weight:
- 22.45 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PRIMARY CHAIN DRIVE KIT
- UNITS:
- KIT
MSRP: $1,576.46Now: $1,497.64Was: $1,576.46 -
On Sale
Belt Drives Ltd Primary Chain Drive System with Clutch for 1990-1998 Harley-Davidson Softail and Dyna Models CD-1-90
BELT DRIVES LTD.
MSRP: $1,577.54Now: $1,498.66Was: $1,577.54A worn or inefficient primary drive system compromises power transfer from your engine to the transmission, resulting in sluggish engagement and unpredictable clutch feel. The Belt Drives Ltd CD-1-90...DS191018- SKU:
- DS191018
- Availability:
- Ships Same Business Day
- Weight:
- 24.13 LBS
- PRODUCT NAME:
- PRIMARY CHAIN DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $1,577.54Now: $1,498.66Was: $1,577.54Qty in Cart: 0Quantity:Price:MSRP: $1,577.54Now: $1,498.66Was: $1,577.54Subtotal: -
On Sale
Belt Drives Ltd Polished Domed Pulley Cover Kit for 1986-1989 Harley Davidson FLST Heritage Softail MD-100
BELT DRIVES LTD.
MSRP: $116.00Now: $110.20Was: $116.00If you're running a 1986-1989 FLST Heritage Softail, belt drive aesthetics matter as much as reliability. The Belt Drives Ltd. Polished Domed Pulley Cover Kit transforms your motor and clutch covers...DS191026- SKU:
- DS191026
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- TOOTH COUNT:
- 47
- TYPE:
- PULLEY
- PRODUCT NAME:
- COVER
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 72
- UNITS:
- KIT
MSRP: $116.00Now: $110.20Was: $116.00 -
On Sale
Belt Drives Ltd 1.5" 65 Tooth Pulley for 1999 Harley-Davidson FLHTCI Electra Glide Classic RPP-65
BELT DRIVES LTD.
MSRP: $574.00Now: $545.30Was: $574.00If you're running a 1999 Harley-Davidson FLHTCI Electra Glide Classic, pulley selection directly impacts your belt drive's efficiency and longevity. This Belt Drives Ltd pulley delivers...DS325817- SKU:
- DS325817
- Availability:
- Ships Same Business Day
- Weight:
- 6.38 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SOLID
- TOOTH COUNT:
- 65
- WIDTH IMPERIAL:
- 1-1/2'
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- PULLEY
MSRP: $574.00Now: $545.30Was: $574.00 -
On Sale
Belt Drives Ltd 1.5in 70 Tooth Rear Pulley for 1986-1999 Harley Davidson FLHTC Electra Glide Classic RPP-70
BELT DRIVES LTD.
MSRP: $574.00Now: $545.30Was: $574.00A properly sized rear pulley is critical to achieving the right final drive ratio and ensuring your belt system operates smoothly under load. This Belt Drives Ltd 70-tooth pulley delivers the...DS325818- SKU:
- DS325818
- Availability:
- Ships Same Business Day
- Weight:
- 8.06 LBS
- MATERIAL:
- BILLET ALUMINUM
- TOOTH COUNT:
- 70
- MODEL:
- SOLID
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- PULLEY
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
MSRP: $574.00Now: $545.30Was: $574.00 -
On Sale
Belt Drives Ltd 1.5" 65 Tooth Mesh Pulley for 1994-1999 Harley Davidson FLHR Road King RPMS-65
BELT DRIVES LTD.
MSRP: $645.08Now: $612.83Was: $645.08Running a worn or undersized pulley on your 1994-1999 Road King compromises belt tension stability and accelerates drivetrain wear. This CNC-machined 65-tooth pulley delivers precise belt engagement...DS325824- SKU:
- DS325824
- Availability:
- Ships Same Business Day
- Weight:
- 4.85 LBS
- MODEL:
- MESH
- TOOTH COUNT:
- 65
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- PULLEY
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $645.08Now: $612.83Was: $645.08 -
On Sale
Belt Drives Ltd Replacement Primary Drive Belt 1980-1982 Harley-Davidson Sturgis FXB PCC-78-118
BELT DRIVES LTD.
MSRP: $325.54Now: $309.26Was: $325.54Primary drive belts wear with every ride, and a compromised belt risks slippage, power loss, and potential catastrophic failure. The Belt Drives Ltd PCC-78-118 is engineered specifically for...DS360018- SKU:
- DS360018
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- STYLE:
- RIBBED
- TOOTH COUNT:
- 78
- UNITS:
- EACH
- PRODUCT NAME:
- DRIVE BELT
- TYPE:
- PRIMARY
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
MSRP: $325.54Now: $309.26Was: $325.54 -
On Sale
Belt Drives Ltd 28 Tooth Transmission Pulley for Harley Sportster 1991-2003 TPS-28
BELT DRIVES LTD.
MSRP: $265.23Now: $251.97Was: $265.23Reducing unsprung weight is one of the most effective upgrades for Harley Sportster performance, and the Belt Drives Ltd TPS-28 Transmission Pulley delivers exactly that. By cutting pulley mass by...DS360046- SKU:
- DS360046
- Availability:
- Ships Same Business Day
- Weight:
- 2.19 LBS
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- TOOTH COUNT:
- 28
- PRODUCT NAME:
- PULLEY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $265.23Now: $251.97Was: $265.23 -
On Sale
Belt Drives Ltd 29 Tooth Transmission Pulley for 1991-2003 Harley-Davidson Sportster XLH883 TPS-29
BELT DRIVES LTD.
MSRP: $265.23Now: $251.97Was: $265.23Reducing rotating mass on your primary drive improves throttle response and reduces parasitic power loss—this 29-tooth transmission pulley sheds a third of the weight of stock options while...DS360047- SKU:
- DS360047
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- PULLEY
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 29
- UNITS:
- EACH
MSRP: $265.23Now: $251.97Was: $265.23 -
On Sale
Belt Drives Ltd 30 Tooth Transmission Pulley for 1991-2003 Harley Sportster TPS-30
BELT DRIVES LTD.
MSRP: $265.23Now: $251.97Was: $265.23Reducing unsprung weight on your Harley's drivetrain directly improves acceleration, handling, and fuel efficiency—and this Belt Drives Ltd transmission pulley delivers measurable gains without...DS360048- SKU:
- DS360048
- Availability:
- Ships Same Business Day
- Weight:
- 2.63 LBS
- TOOTH COUNT:
- 30
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- PULLEY
MSRP: $265.23Now: $251.97Was: $265.23 -
On Sale
Belt Drives Ltd 138 Tooth 8mm Primary Drive Belt for Harley Davidson Softail 1986-2003 BDL-138K
BELT DRIVES LTD.
MSRP: $184.62Now: $175.39Was: $184.62If you're running a BDL primary drive on your Harley Davidson Softail, belt degradation is a silent threat to reliability and performance. The BDL-138K replaces worn or damaged belts with...DS360086- SKU:
- DS360086
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- PRODUCT NAME:
- DRIVE BELT
- WIDTH IMPERIAL:
- 1-5/8'
- STYLE:
- RIBBED
- TYPE:
- PRIMARY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TOOTH COUNT:
- 138
MSRP: $184.62Now: $175.39Was: $184.62 -
On Sale
Belt Drives Ltd 8mm Primary Belt Drive Electric Start 79-84 Harley-Davidson 61-41SE-2
BELT DRIVES LTD.
MSRP: $890.00Now: $845.50Was: $890.00If you're running a 1979-1984 electric start Harley-Davidson, a primary belt drive upgrade is one of the most effective ways to improve reliability, reduce maintenance, and deliver smoother power...DS360098- SKU:
- DS360098
- Availability:
- Ships Same Business Day
- Weight:
- 9.40 LBS
- COLOR/FINISH:
- ANODIZED
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
- THICKNESS IMPERIAL:
- 5/16'
- UNITS:
- KIT
MSRP: $890.00Now: $845.50Was: $890.00 -
On Sale
Belt Drives Ltd 8mm Primary Belt Drive Electric Start 1965-1978 61-41SE-1
BELT DRIVES LTD.
MSRP: $890.00Now: $845.50Was: $890.00A reliable primary belt drive is foundational to smooth power delivery and clutch longevity on classic Harley-Davidson models. This Belt Drives Ltd system eliminates slack and wear associated with...DS360099- SKU:
- DS360099
- Availability:
- Ships Same Business Day
- Weight:
- 10.06 LBS
- WIDTH IMPERIAL:
- 1-1/2'
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- COLOR/FINISH:
- ANODIZED
- THICKNESS IMPERIAL:
- 5/16'
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
MSRP: $890.00Now: $845.50Was: $890.00 -
On Sale
Belt Drives Ltd 8mm 1.5in Primary Belt Drive Kit for 1979-1984 Harley-Davidson FXR 61-41SK-4
BELT DRIVES LTD.
MSRP: $764.62Now: $726.39Was: $764.62A worn or inefficient primary drive directly impacts power delivery and clutch responsiveness on your FXR. This complete Belt Drives Ltd kit eliminates slippage and drivetrain lag with...DS360101- SKU:
- DS360101
- Availability:
- Ships Same Business Day
- Weight:
- 8.81 LBS
- UNITS:
- KIT
- THICKNESS IMPERIAL:
- 5/16'
- WIDTH IMPERIAL:
- 1-1/2'
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 132
MSRP: $764.62Now: $726.39Was: $764.62
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.
