Zipp 404 Firecrest wheels are better than ever now featuring a Tubeless ready design that allows for reduced tire pressures and lower rolling resistance combined with increased cornering grip and compliance without the risk of pinch flats. The 58mm rim depth is a classic size that has carried athletes to victory in every kind of event and situation - triathlon distance breakaways field sprints and hilly finishes. Zipp's ABLC Sawtooth Technology uses a complex dimpling pattern to improve aero efficiency combined with a versatile and durable new hub the German engineered ZR1. If you had to choose just one wheel for road riding and racing the 404 Firecrest Tubeless is a savvy and speedy choice.Versatile aero wheelset for the modern road bike with tubeless and hookless rim profileOptimized tire bed for easy tire installationWide 23mm rim profile creates a better tire interface to be fast on the roadZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagementShips with 12mm front and rear end caps and ceter-lock ring