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 8mm 1.5in Primary Belt Drive Kit for 1948-1954 Harley-Davidson FL 62-39TK-1
BELT DRIVES LTD.
MSRP: $627.95Now: $565.16Was: $627.95Upgrade your classic motorcycle with our high-quality 8mm Primary Belt Drive Kit, designed specifically for kick-start models from 1936 to 1954. This comprehensive kit ensures smooth power transfer and durability, featuring precision-engineered...DS360104- SKU:
- DS360104
- Availability:
- Ships Same Business Day
- Weight:
- 8.63 LBS
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- THICKNESS IMPERIAL:
- 5/16'
- UNITS:
- KIT
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
MSRP: $627.95Now: $565.16Was: $627.95 -
On Sale
Belt Drives Ltd 11mm Belt Drive Kit for 1980-1983 Harley-Davidson Touring and 1982-1983 FXR 47-31SE-5
BELT DRIVES LTD.
MSRP: $693.95Now: $624.56Was: $693.95Experience superior engineering with our 11mm Belt Drive featuring an Idler Gear and Electric Start. This 5-speed system is designed for optimal performance, ensuring smooth operation and easy maintenance. Crafted in the U.S.A., it offers durability and...DS360105- SKU:
- DS360105
- Availability:
- Ships Same Business Day
- Weight:
- 11.38 LBS
- COLOR/FINISH:
- ANODIZED
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BELT DRIVE KIT
- UNITS:
- KIT
MSRP: $693.95Now: $624.56Was: $693.95 -
On Sale
Belt Drives Ltd Transmission Pulley 31 Tooth for 1995-2006 Harley-Davidson Softail FLSTN TP-31
BELT DRIVES LTD.
MSRP: $202.95Now: $182.66Was: $202.95Elevate your ride with the BELT DRIVES LTD. Transmission Pulley TP-31, crafted from high-quality 6061 T-6 aluminum and finished with a hard anodized coating for exceptional durability. Designed to be one-third the weight of stock pulleys, this pulley...DS360166- SKU:
- DS360166
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- TOOTH COUNT:
- 31
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- PULLEY
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $202.95Now: $182.66Was: $202.95 -
On Sale
Belt Drives Ltd Replacement Primary Belt 11mm 99 Teeth for Harley-Davidson FL Models BDL-1185
BELT DRIVES LTD.
MSRP: $132.95Now: $119.66Was: $132.95The BDL-1185 Replacement Belt from Belt Drives Ltd. is engineered for optimal performance and durability in BDL primary drives. This high-quality belt ensures a reliable connection, enhancing the efficiency of your machinery. Designed with precision, it...DS360009- SKU:
- DS360009
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- STYLE:
- RIBBED
- PRODUCT NAME:
- DRIVE BELT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 99
- UNITS:
- EACH
- TYPE:
- PRIMARY
- WIDTH IMPERIAL:
- 1-1/2'
MSRP: $132.95Now: $119.66Was: $132.95 -
On Sale
Belt Drives Ltd 1-5/8" Belt Drive for 1990-2006 Harley-Davidson Softail and Dyna EVBB-2SL
BELT DRIVES LTD.
MSRP: $1,116.95Now: $1,005.26Was: $1,116.95Experience unparalleled performance with the Belt Drives Ltd. 1-5/8" Belt Drive EVBB-2SL. This comprehensive kit features everything you need for a seamless installation, ensuring optimal power transfer and reliability. Crafted with precision in the U.S...11200247- SKU:
- 11200247
- Availability:
- Ships Same Business Day
- Weight:
- 16.00 LBS
- MATERIAL:
- KEVLAR
- WIDTH IMPERIAL:
- 1-5/8'
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STEEL
MSRP: $1,116.95Now: $1,005.26Was: $1,116.95 -
On Sale
Belt Drives Ltd Clutch Hub for Top Fuel 1990-2006 Softail TFCH-180
BELT DRIVES LTD.
MSRP: $255.95Now: $230.36Was: $255.95Experience unmatched performance with the BELT DRIVES LTD. Clutch Hub, expertly crafted from high-grade aluminum and hard anodized for enhanced durability. Proudly made in the U.S.A., this component is designed to meet the rigorous demands of top fuel...11200035- SKU:
- 11200035
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- COLOR/FINISH:
- ANODIZED
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 3-3/8'
- PRODUCT NAME:
- CLUTCH HUB
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $255.95Now: $230.36Was: $255.95 -
On Sale
Belt Drives Ltd Replacement Primary Drive Belt for Harley-Davidson FL 1200 1970-1977 BDL-30853 ST
BELT DRIVES LTD.
MSRP: $85.95Now: $77.36Was: $85.95The BDL-30853 ST Replacement Belt from Belt Drives Ltd. is engineered for optimal performance in BDL primary drive systems. This durable and reliable belt ensures smooth operation and longevity, making it an essential component for maintaining your...DS360007- SKU:
- DS360007
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- TOOTH COUNT:
- 132
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- STYLE:
- RIBBED
- PRODUCT NAME:
- DRIVE BELT
- TYPE:
- PRIMARY
- WIDTH IMPERIAL:
- 1-1/2'
MSRP: $85.95Now: $77.36Was: $85.95 -
On Sale
Belt Drives Ltd 144 Tooth 8mm x 3in Primary Drive Belt BDL-37144-3
BELT DRIVES LTD.
MSRP: $185.95Now: $167.36Was: $185.95Enhance the performance of your BDL primary drives with the Replacement Belt BDL-37144-3. Engineered for durability and efficiency, this belt ensures smooth operation and optimal power transfer. Trust in its quality to keep your machinery running at peak...DS360014- SKU:
- DS360014
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 144
- TYPE:
- PRIMARY
- PRODUCT NAME:
- DRIVE BELT
- WIDTH IMPERIAL:
- 3'
- STYLE:
- RIBBED
- UNITS:
- EACH
MSRP: $185.95Now: $167.36Was: $185.95 -
DRAG SPECIALTIES Compensating Sprocket Kit 241270-LBX1
DRAG SPECIALTIES
$299.68Complete kits contain a high-quality sprocket, sprocket shaft extension, sliding cam, sprocket nut and cover with spring plateDS195197- SKU:
- DS195197
- Availability:
- Ships Same Business Day
- Weight:
- 5.70 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- SPROCKET KIT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 24
- TYPE:
- COMPENSATING
$299.68 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 2017-2019 Harley-Davidson Touring Models EVO-16BH-2B
BELT DRIVES LTD.
MSRP: $3,884.95Now: $3,496.46Was: $3,884.95Elevate your ride with the Belt Drive EVO-16BH-2B, engineered for high-performance enthusiasts. This innovative open belt drive kit features a robust one-piece motor plate design, ensuring enhanced stability and a sleek appearance. With a precise 1.32:1...11200399- SKU:
- 11200399
- Availability:
- Ships Same Business Day
- Weight:
- 42.03 LBS
- SIZE IMPERIAL:
- 2'
- COLOR/FINISH:
- BLACK
- TYPE:
- PRIMARY BELT DRIVE
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 52
- TOOTH COUNT:
- 69
MSRP: $3,884.95Now: $3,496.46Was: $3,884.95 -
On Sale
Belt Drives Ltd 3" 8mm Drive Belt for Harley-Davidson Dyna 1991-2005 EVOB-122S
BELT DRIVES LTD.
MSRP: $2,871.95Now: $2,584.76Was: $2,871.95Enhance your ride with the BELT DRIVES LTD. 3"/8mm Drive Belt EVOB-122S, engineered for optimal performance and reliability. This complete kit offers everything you need for a seamless installation, ensuring a powerful and smooth driving experience. ...11200245- SKU:
- 11200245
- Availability:
- Ships Same Business Day
- Weight:
- 37.60 LBS
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- MATERIAL:
- STEEL
- WIDTH IMPERIAL:
- 3'
- MATERIAL:
- KEVLAR
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
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 3" Belt Drive 1986-1989 Softail FXST EVOB-9T
BELT DRIVES LTD.
MSRP: $2,759.95Now: $2,483.96Was: $2,759.95Upgrade your ride with the Belt Drives Ltd. 3" Belt Drive EVOB-9T, designed for optimal performance and reliability. This comprehensive kit includes everything you need for a seamless installation, ensuring powerful engagement and minimal slippage...11200252- SKU:
- 11200252
- Availability:
- Ships Same Business Day
- Weight:
- 37.90 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: $2,759.95Now: $2,483.96Was: $2,759.95 -
On Sale
Belt Drives Ltd 1-5/8" Belt Drive with Chain for 1980-1983 Harley-Davidson Tour Glide FLT EVBB-3T-5
BELT DRIVES LTD.
MSRP: $1,116.95Now: $1,005.26Was: $1,116.95Experience superior performance with the Belt Drives Ltd. 1-5/8" Belt Drive system, designed for seamless integration and optimal efficiency. This kit includes everything you need for a direct bolt-in application, ensuring a hassle-free installation and...11200253- SKU:
- 11200253
- Availability:
- Ships Same Business Day
- Weight:
- 15.80 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- MATERIAL:
- STEEL
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 1-5/8'
- MATERIAL:
- KEVLAR
MSRP: $1,116.95Now: $1,005.26Was: $1,116.95 -
EASTERN MOTORCYCLE PARTS Chain Tensioner Lock Tab A-39996-65
EASTERN MOTORCYCLE PARTS
$14.80Made in the U.S.A.11200189- SKU:
- 11200189
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- LOCK TAB
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY CHAIN
- TYPE:
- ADJUSTER PLATE
$14.80 -
Jims Inner Primary Bearing Seal for Harley-Davidson Big Twin 1990-2006 8961
JIMS
$18.95Upgrade your motorcycle's performance with the JIMS Inner Primary Bearing Seal 8961. Designed for durability and precision, this replacement seal ensures a tight fit and prevents oil leaks, keeping your engine running smoothly. Trust in JIMS quality to...11200414- SKU:
- 11200414
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- BEARING KIT
- TYPE:
- INNER PRIMARY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$18.95 -
DRAG SPECIALTIES Chain Tensioner Mount 18120-BX-LB1
DRAG SPECIALTIES
$81.32Used for updating an old adjuster system or when building a new bike from the ground up, Complete kit includes washers, adjuster plate, bolts, shoe, adjuster and nutDS181201- SKU:
- DS181201
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- PRODUCT NAME:
- CHAIN ADJUSTER KIT
- MATERIAL:
- NYLON
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY CHAIN
- UNITS:
- KIT
$81.32Qty in Cart: 0Quantity:Price:$81.32Subtotal: -
GARDNER-WESTCOTT Primary Cover Hardware P-10-24-08N
GARDNER-WESTCOTT
$67.95Kits features polished chrome steel socket-head bolts, includes primary, inspection and derby covers, Made in the U.S.A.DS175009- SKU:
- DS175009
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BOLT KIT
- COLOR/FINISH:
- CHROME
- TYPE:
- PRIMARY COVER
- MATERIAL:
- STEEL
- UNITS:
- KIT
$67.95 -
GARDNER-WESTCOTT Primary Cover Hardware P-10-17-08
GARDNER-WESTCOTT
$67.95Kits features polished chrome steel socket-head bolts, includes primary, inspection and derby covers, Made in the U.S.A.DS175008- SKU:
- DS175008
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- MATERIAL:
- STEEL
- TYPE:
- PRIMARY COVER
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- BOLT KIT
- RIDING STYLE:
- STREET
$67.95Qty in Cart: 0Quantity:Price:$67.95Subtotal: -
GARDNER-WESTCOTT Primary Cover Hardware P-10-18-08
GARDNER-WESTCOTT
$79.95Kits features polished chrome steel socket-head bolts, includes primary, inspection and derby covers, Made in the U.S.A.DS175007- SKU:
- DS175007
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- BOLT KIT
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- TYPE:
- PRIMARY COVER
- UNITS:
- KIT
$79.95 -
On Sale
Belt Drives Ltd 2" Belt Drive Kit for 1990-2006 Harley-Davidson Softail EV-600-B
BELT DRIVES LTD.
MSRP: $3,191.95Now: $2,872.76Was: $3,191.95Experience superior performance with the Belt Drives Ltd. 2" EV-600-B Belt Drive Kit, designed for seamless operation and reliability. This comprehensive kit includes everything you need for easy installation and optimal functionality, ensuring a smooth...11200257- SKU:
- 11200257
- Availability:
- Ships Same Business Day
- Weight:
- 37.55 LBS
- STYLE:
- RIBBED
- MATERIAL:
- KEVLAR
- TOOTH COUNT:
- 142
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 2'
MSRP: $3,191.95Now: $2,872.76Was: $3,191.95Qty in Cart: 0Quantity:Price:MSRP: $3,191.95Now: $2,872.76Was: $3,191.95Subtotal:
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.
