Vortex 16 Tooth Front Sprocket Ducati Multistrada 04 520 Conv More AMA Superbike riders trust the proven design of the Vortex Aluminum Sprocket than any other. The tight tolerances and unique tooth design have continued to make Vortex the industry standard. The CAT5 Series Sprockets are unlike any other. We utilize the same proven Vortex design with color anodizing that excludes our sweeps, mud grooves and teeth. The result is a flash of color RED BLUE & BLACK with silver highlights. Sprockets are available in many different tooth amounts if you need a different tooth set up feel free to browse the site for more applications we carry them all. There is no returns on vortex sprockets.