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
-
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 -
DRAG SPECIALTIES Sprocket Shaft Extension - 5-Speed 26-0018
DRAG SPECIALTIES
$54.54High-quality OEM replacement component11200270- SKU:
- 11200270
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- CHROME
- TYPE:
- SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHAFT EXTENSION
$54.54 -
DRAG SPECIALTIES Inner Primary Bearing Kit 25-3103
DRAG SPECIALTIES
$51.45Includes pinion seal, main shaft seal, bearing snap rings, inner bearing race and bearing, Fits OEM and most aftermarket inner primaries11200281- SKU:
- 11200281
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- TYPE:
- INNER PRIMARY MAINSHAFT
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$51.45 -
DRAG SPECIALTIES Compensating Sprocket Kit 241274
DRAG SPECIALTIES
$305.86Complete kits contain a high-quality sprocket, sprocket shaft extension, sliding cam, sprocket nut and cover with spring plateDS195196- SKU:
- DS195196
- Availability:
- Ships Same Business Day
- Weight:
- 5.68 LBS
- TOOTH COUNT:
- 25
- UNITS:
- KIT
- TYPE:
- COMPENSATING
- PRODUCT NAME:
- SPROCKET KIT
- RIDING STYLE:
- STREET
$305.86 -
DRAG SPECIALTIES Compensating Sprocket - 24 Tooth 26-0020-24BXLB1
DRAG SPECIALTIES
$110.16Replacement steel compensating sprocketsDS191011- SKU:
- DS191011
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COMPENSATING
- MATERIAL:
- STEEL
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 24
$110.16Qty in Cart: 0Quantity:Price:$110.16Subtotal: -
DRAG SPECIALTIES Primary Chain - #35-3 x 94 CA35-3S2N/1000
DRAG SPECIALTIES
$129.73Improved fatigue resistance, Pre-loaded to reduce initial elongation, Endless construction using high-quality raw materials for long life, Made in Italy11200286- SKU:
- 11200286
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- NUMBER OF LINKS:
- 94
- PRODUCT NAME:
- PRIMARY CHAIN
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$129.73 -
DRAG SPECIALTIES Inner Primary Mainshaft Bearing with Seal 25-3101
DRAG SPECIALTIES
$51.45Includes pinion seal, main shaft seal, bearing snap rings, inner bearing race and bearing, Fits OEM and most aftermarket inner primaries11200162- SKU:
- 11200162
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- SEAL KIT
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY MAINSHAFT
- UNITS:
- KIT
$51.45 -
DRAG SPECIALTIES Primary Chain Adjusting Shoe 15-0905-SC1
DRAG SPECIALTIES
$16.43Replaces stock nylon shoeDS192002- SKU:
- DS192002
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- NYLON
- PRODUCT NAME:
- ADJUSTING SHOE
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY CHAIN
- UNITS:
- EACH
$16.43 -
DRAG SPECIALTIES Inner Primary Bearing Race 40-2337
DRAG SPECIALTIES
$11.28Fits most OEM and most aftermarket inner primaries11200305- SKU:
- 11200305
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
$11.28 -
DRAG SPECIALTIES Primary Tension Shoe 15-0986
DRAG SPECIALTIES
$17.46Replaces stock nylon shoe11200079- SKU:
- 11200079
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- ADJUSTING SHOE
- TYPE:
- PRIMARY CHAIN
$17.46 -
DRAG SPECIALTIES Primary Chain Adjuster Nut - XL '04-'17 G15-0941K-NU
DRAG SPECIALTIES
$10.25Zinc-plated11200353- SKU:
- 11200353
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- ZINC
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- ADJUSTER NUT
- UNITS:
- EACH
- TYPE:
- SEALING
$10.25Qty in Cart: 0Quantity:Price:$10.25Subtotal: -
DRAG SPECIALTIES Primary Chain Adjuster Kit G15-0940K
DRAG SPECIALTIES
$212.13Manual 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...11200393- SKU:
- 11200393
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- PRIMARY CHAIN ADJUSTER KIT
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
$212.13 -
DRAG SPECIALTIES Compensator Kit D26-0145K
DRAG SPECIALTIES
$424.31Designed to handle high torque and horsepower in high-performance engine applications, Increased travel helps protect the motor and drivetrain from the harsh shock of full throttle launches, Kit features a 34-tooth compensator sprocket, heavy-duty spring...11200404- SKU:
- 11200404
- Availability:
- Ships Same Business Day
- Weight:
- 11.35 LBS
- TOOTH COUNT:
- 34
- UNITS:
- KIT
- PRODUCT NAME:
- COMPENSATOR
- RIDING STYLE:
- STREET
$424.31 -
DRAG SPECIALTIES Primary Chain Adjuster G15-0941K
DRAG SPECIALTIES
$65.87Includes bracket shoe and retaining clip, Zinc plated, Replaces OEM adjuster11200352- SKU:
- 11200352
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- COLOR/FINISH:
- ZINC
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY CHAIN
- PRODUCT NAME:
- CHAIN ADJUSTER KIT
- UNITS:
- EACH
- MATERIAL:
- STEEL
$65.87 -
S&S CYCLE Inner Primary Bearing Race 560-0241
S&S CYCLE
$82.95Eliminates bearing race movement that can cause costly damage to transmission seal and output bearing, A must for high-performance applications, Made in the U.S.A.11200335- SKU:
- 11200335
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING RACE
$82.95 -
DRAG SPECIALTIES Primary Chain - 428-2 x 82 C226T3/002
DRAG SPECIALTIES
$145.18Improved fatigue resistance, Pre-loaded to reduce initial elongation, Endless construction using high-quality raw materials for long life, Made in Italy11200283- SKU:
- 11200283
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- PRIMARY CHAIN
- RIDING STYLE:
- STREET
- NUMBER OF LINKS:
- 82
$145.18 -
DRAG SPECIALTIES Primary Chain Adjusting Shoe 15-0904-SC1
DRAG SPECIALTIES
$10.25Replaces stock nylon shoeDS192001- SKU:
- DS192001
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- TYPE:
- PRIMARY CHAIN
- UNITS:
- EACH
- PRODUCT NAME:
- ADJUSTING SHOE
- RIDING STYLE:
- STREET
$10.25 -
DRAG SPECIALTIES Compensating Sprocket Kit 241272-LBX1
DRAG SPECIALTIES
$299.68Complete kits contain a high-quality sprocket, sprocket shaft extension, sliding cam, sprocket nut and cover with spring plateDS195198- SKU:
- DS195198
- Availability:
- Ships Same Business Day
- Weight:
- 6.08 LBS
- TOOTH COUNT:
- 24
- PRODUCT NAME:
- SPROCKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- COMPENSATING
- UNITS:
- KIT
$299.68 -
DRAG SPECIALTIES Primary Shoe Adjuster 210029
DRAG SPECIALTIES
$50.42Includes bracket shoe and retaining clip, Zinc plated, Replaces OEM adjuster78050022- SKU:
- 78050022
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- CHAIN ADJUSTER KIT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ZINC
- TYPE:
- PRIMARY CHAIN
$50.42 -
S&S CYCLE Inner Primary Bearing Race 56-5089
S&S CYCLE
$81.95Eliminates bearing race movement that can cause costly damage to transmission seal and output bearing, A must for high-performance applications, Made in the U.S.A.11200148- SKU:
- 11200148
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- PRODUCT NAME:
- BEARING RACE
- UNITS:
- EACH
$81.95
