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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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:
- 10.70 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- SPROCKET KIT
- RIDING STYLE:
- STREET
$406.80 -
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
$76.17 -
DRAG SPECIALTIES Compensating Sprocket Shaft Extension - +1-3/8" 346238
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 applications11200002- SKU:
- 11200002
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- PRODUCT NAME:
- SHAFT EXTENSION
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- +1-3/8'
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- COMPENSATING SPROCKET
$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 210185
DRAG SPECIALTIES
$505.68Kits include compensating sprocket assembly, chain adjuster assembly and complete clutch assembly with aramid friction plates, Primary chains sold separately11200077- SKU:
- 11200077
- Availability:
- Ships Same Business Day
- Weight:
- 22.00 LBS
- TOOTH COUNT:
- 36
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PRIMARY CHAIN DRIVE KIT
$505.68Qty in Cart: 0Quantity:Price:$505.68Subtotal: -
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
$31.88Fits 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
$31.88 -
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 Primary Chain Adjusting Shoe 15-0906-SC1
DRAG SPECIALTIES
$16.43Replaces stock nylon shoeDS192003- SKU:
- DS192003
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- PRIMARY CHAIN
- UNITS:
- EACH
- PRODUCT NAME:
- ADJUSTING SHOE
- RIDING STYLE:
- STREET
- MATERIAL:
- NYLON
$16.43Qty in Cart: 0Quantity:Price:$16.43Subtotal: -
DRAG SPECIALTIES Replacement Chain Adjuster Shoe G15-0940K-NU
DRAG SPECIALTIES
$23.64Manual primary chain adjuster, Stops over-tightening of the primary chain that can occur with the stock automatic adjuster, Reduces the stress on the motor sprocket bearings and transmission drive bearings, Allows correct adjustment of the primary chain...11200394- SKU:
- 11200394
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- EACH
- TYPE:
- PRIMARY
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- PRIMARY CHAIN ADJUSTER KIT
- RIDING STYLE:
- STREET
$23.64Qty in Cart: 0Quantity:Price:$23.64Subtotal:
