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Vortex 921AZKV4-40 VTX Aluminum Rear Sprocket 40T

Manufacturer

Picture for manufacturer Vortex

Part Number

921AZKV4-40
9 reviews
Sale Price

$69.66

Estimated ship date Tuesday, November 24

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Vortex 921AZKV4-40 is a high-performance aluminum rear sprocket from Vortex Racing, designed as a direct OEM replacement or upgrade for motorcycles requiring the VTX sprocket series. Engineered from lightweight, high-strength aluminum, this sprocket delivers an ideal balance of reduced unsprung weight and long-lasting durability for both street and track applications.

Key Features:

  • Tooth Count: 40 teeth for optimized final drive gearing
  • Material: High-grade aluminum alloy construction for reduced weight versus steel
  • Series: Vortex VTX sprocket series — precision CNC-machined for exact fitment
  • Finish: Anodized surface treatment for corrosion resistance and durability
  • Direct-fit design for straightforward installation with no modifications required
  • Precision-drilled bolt holes for secure, rattle-free mounting

Vortex Racing is a globally recognized manufacturer of performance drivetrain components trusted by professional racers and enthusiasts alike. The VTX series rear sprockets are CNC-machined to tight tolerances, ensuring smooth chain engagement and consistent power transfer. Whether upgrading for track days or replacing a worn OEM sprocket, the 921AZKV4-40 is a proven, race-proven choice.

Arrived earlier than expected. Shipping was a little more but it was a small order so that happens.

We found a tire here that was hard to find and it was shipped quickly. Great experience and would use this company again.

All good here!

good price

Returning customer from almost 17 years ago! I built a b16a and I bought all of the internals from you guys. Couldn't find my old account

so far so goog

your payment is confusing

Really painless transaction. My item arrived essentially on time (a slight delay from the estimated delivery date - but THM was all over it, touching base with updates before I even had to reach out). My order arrived in working order and packaged well. I will definitely order from them again!

Good price, fast shipping

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