The Zipp 404 NSW Tubeless Disc-brake offers a new rim shape with greater aerodynamic efficiency and reduced side force as well as the Cognition disc-brake hubset for increased durability and less drag. The 404 NSW Tubeless Disc-brake, with a rim depth of 58mm, is designed for road cyclists and triathletes looking for increased speed and stability. The 404 NSW Tubeless features a rim shape that aerodynamically integrates wider tubeless tires for enhanced ride quality and performance. The benefits of tubeless include superior flat protection, the ability to run lower pressures, and a smoother ride with high cornering grip and low rolling resistance. This wheelset, though, allows you to run tubeless or traditional clinchers.