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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Jims Primary Bearing Upgrade 1990-2006 Harley-Davidson Softail Springer 8960
JIMS
$53.95Enhance the performance and reliability of your motorcycle with the JIMS Primary Bearing Kit 8960. Designed for both open primary systems and high-output applications, this kit features a double row ball bearing that ensures superior durability and...11200242- SKU:
- 11200242
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- BEARING KIT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
$53.95 -
EASTERN MOTORCYCLE PARTS Bearing - 8980 A-8980
EASTERN MOTORCYCLE PARTS
$26.95High-quality replacement component, Fits OEM and most aftermarket inner primaries11200344- SKU:
- 11200344
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY MAINSHAFT
- UNITS:
- EACH
$26.95 -
EASTERN MOTORCYCLE PARTS Bronze Bushing - 33445-89 A-33445-89
EASTERN MOTORCYCLE PARTS
$14.95High-quality bronze construction, Made in the U.S.A.21100453- SKU:
- 21100453
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- BRONZE
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY COVER
- UNITS:
- EACH
$14.95 -
EASTERN MOTORCYCLE PARTS Bronze Bushing - 33446-94 A-33446-94
EASTERN MOTORCYCLE PARTS
$20.95High-quality bronze construction, Made in the U.S.A.21100454- SKU:
- 21100454
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- BRONZE
- TYPE:
- INNER PRIMARY COVER
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$20.95 -
DRAG SPECIALTIES Primary Tensioner Kit 15-0937K
DRAG SPECIALTIES
$99.86Used 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 nut11200160- SKU:
- 11200160
- Availability:
- Ships Same Business Day
- Weight:
- 1.08 LBS
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY CHAIN
- UNITS:
- KIT
- PRODUCT NAME:
- CHAIN ADJUSTER KIT
$99.86 -
DRAG SPECIALTIES Inner Primary Bushing 292241
DRAG SPECIALTIES
$19.52Quality replacement steel bushings21100035- SKU:
- 21100035
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- MATERIAL:
- STEEL
- UNITS:
- EACH
$19.52 -
DRAG SPECIALTIES Inner Primary Bushing 292240
DRAG SPECIALTIES
$19.52Quality replacement steel bushings21100036- SKU:
- 21100036
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- BUSHING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
$19.52 -
DRAG SPECIALTIES Outer Primary Bushing - '94-'06 292243
DRAG SPECIALTIES
$14.37Quality replacement steel bushings21100037- SKU:
- 21100037
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BUSHING
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- STARTER SHAFT
$14.37 -
DRAG SPECIALTIES Outer Primary Bushing - '89-'93 292242
DRAG SPECIALTIES
$14.37Quality replacement steel bushings21100038- SKU:
- 21100038
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- STARTER SHAFT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- BUSHING
- UNITS:
- EACH
$14.37 -
DRAG SPECIALTIES One-Piece Sprocket Kit 191205
DRAG SPECIALTIES
$192.56Solid steel one-piece design, 34-tooth sprocket, Kit is spring-less and much quieter than the stock or diaphragm spring-style compensators, Eliminates the need for a complete compensator assembly, Kit includes washer, spacer and instructions, Retain and...11200413- SKU:
- 11200413
- Availability:
- Ships Same Business Day
- Weight:
- 4.15 LBS
- PRODUCT NAME:
- SPROCKET KIT
- TYPE:
- PRIMARY
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
$192.56 -
DRAG SPECIALTIES Sprocket Kit 241336
DRAG SPECIALTIES
$406.80DRAG SPECIALTIES Sprocket Kit11200435- SKU:
- 11200435
- Availability:
- Ships Same Business Day
- Weight:
- 10.71 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- SPROCKET KIT
- RIDING STYLE:
- STREET
$406.80Qty in Cart: 0Quantity:Price:$406.80Subtotal: -
DRAG SPECIALTIES Compensating Sprocket Shaft Extension - +1" 346232
DRAG SPECIALTIES
$76.17Hardened alloy steel extension has been precision ground, For use with OEM or most aftermarket compensating sprockets, Used when offsetting transmission in wide tire applications11200001- SKU:
- 11200001
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MATERIAL:
- STEEL
- SIZE IMPERIAL:
- +1'
- TYPE:
- COMPENSATING SPROCKET
- PRODUCT NAME:
- SHAFT EXTENSION
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$76.17Qty in Cart: 0Quantity:Price:$76.17Subtotal: -
DRAG SPECIALTIES Primary Drive Kit 210186
DRAG SPECIALTIES
$926.95Kits include compensating sprocket assembly, chain adjuster assembly and complete clutch assembly with aramid friction plates, Primary chains sold separately11200076- SKU:
- 11200076
- Availability:
- Ships Same Business Day
- Weight:
- 22.75 LBS
- TOOTH COUNT:
- 25
- PRODUCT NAME:
- PRIMARY CHAIN DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$926.95 -
DRAG SPECIALTIES Primary Drive Kit 210184
DRAG SPECIALTIES
$531.43Kits include compensating sprocket assembly, chain adjuster assembly and complete clutch assembly with aramid friction plates, Primary chains sold separately11200078- SKU:
- 11200078
- Availability:
- Ships Same Business Day
- Weight:
- 21.75 LBS
- PRODUCT NAME:
- PRIMARY CHAIN DRIVE KIT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 37
- UNITS:
- KIT
$531.43 -
DRAG SPECIALTIES Compensator Sprocket 241271
DRAG SPECIALTIES
$214.1934-tooth, High-quality steel construction11200304- SKU:
- 11200304
- Availability:
- Ships Same Business Day
- Weight:
- 5.40 LBS
- TYPE:
- COMPENSATING
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 34
- UNITS:
- EACH
$214.19 -
DRAG SPECIALTIES Primary Chain - 428-2 x 92 C226T3/009
DRAG SPECIALTIES
$154.45Improved fatigue resistance, Pre-loaded to reduce initial elongation, Endless construction using high-quality raw materials for long life, Made in Italy11200285- SKU:
- 11200285
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- UNITS:
- EACH
- NUMBER OF LINKS:
- 92
- PRODUCT NAME:
- PRIMARY CHAIN
- RIDING STYLE:
- STREET
$154.45 -
DRAG SPECIALTIES Primary Sprocket 191200
DRAG SPECIALTIES
$232.73Solid steel one-piece design, 34-tooth sprocket, Kit is spring-less and much quieter than the stock or diaphragm spring-style compensators, Eliminates the need for a complete compensator assembly, Kit includes washer, spacer and instructions, Retain and...11200390- SKU:
- 11200390
- Availability:
- Ships Same Business Day
- Weight:
- 4.75 LBS
- PRODUCT NAME:
- SPROCKET KIT
- TYPE:
- COMPENSATING
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 34
$232.73 -
DRAG SPECIALTIES Inner Primary Bearing 20-2037
DRAG SPECIALTIES
$34.25Fits most OEM and most aftermarket inner primaries11200306- SKU:
- 11200306
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- INNER PRIMARY
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$34.25 -
DRAG SPECIALTIES Primary Chain - 428-2 x 86 C226T3/004
DRAG SPECIALTIES
$128.70Improved fatigue resistance, Pre-loaded to reduce initial elongation, Endless construction using high-quality raw materials for long life, Made in Italy11200284- SKU:
- 11200284
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- UNITS:
- EACH
- NUMBER OF LINKS:
- 86
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PRIMARY CHAIN
$128.70 -
DRAG SPECIALTIES Sprocket Shaft Extension - 4-Speed 26-0019
DRAG SPECIALTIES
$96.77High-quality OEM replacement component11200269- SKU:
- 11200269
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- STEEL
- TYPE:
- SPROCKET
- PRODUCT NAME:
- SHAFT EXTENSION
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$96.77
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.
