Vortex® 251AZK-42 - Rear Lightweight CAT5 Aluminum Racing Sprocket

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Vehicle Fitment

HondaCBR1000RR 2004-2014
CBR600F 2001-2006
CBR600RR 2003-2014
CBR929RR 2000-2001
CBR954RR 2002-2003
RVT1000R 2000-2006

Product Details

Rear Lightweight CAT5 Aluminum Racing Sprocket (251AZK-42) by Vortex®. Pitch: 520. Tooth Quantity: 42. Finish: Black. Vortex utilize the same proven Vortex design with color anodizing that excludes Vortex sweeps, mud grooves and teeth. The result is a flash of color with silver highlights. Utilizes the same proven Vortex design with a color anodize that excludes Vortex sweeps, mud grooves and teeth. 100% CNC-machined. Saber tooth grooves.


Material: Aluminum
Side: Rear
Pitch: 520
Tooth Quantity: 42
Finish: Black


  • 100% CNC manufactured in the USA
  • Specially formulated alloy per Vortex specifications
  • Contrasting silver machine cuts
  • Unique tooth design increases sprocket longevity
  • Vortex patented sprocket design is unlike any other sprocket
  • Designed to serve the motorsport market
  • Reliable and secure solution for your racing needs
  • Expertly engineered to win and last for years ahead

For nearly 20 years, U.S.-based Vortex® continues to manufacture, market and sell top-quality motorcycle racing components for Motocross, Supercross, Road Racing, Flat Track Racing and Minibikes. Owned and operated by motorcycle racers and enthusiasts, Vortex focus on absolute quality. Each of Vortex race components is made to the tightest tolerances with the best quality materials in the industry. Vortex test on the track with direct feedback from top professional race teams worldwide.

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Vortex® 251AZK-42 - Rear Lightweight CAT5 Aluminum Racing Sprocket

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