The Zipp 303 Firecrest Tubular wheelset for rim brakes offers performance-oriented cyclists key technologies. These groundbreaking wheels were designed to win in Roubaix and Flanders. With the same 45mm profile, the rims of the 303 Firecrest Tubular have been revised for impact resistance. When it comes to speed, the 303 Firecrest Tubeless delivers crucial hits. It is lightweight and features the ABLC™-Sawtooth™ technology, a sophisticated pattern of golf ball-like dimples that was initially developed for the high-end NSW wheels. This technology helps optimize aerodynamic drag and crosswind stability – what we call AeroBalance™. Zipp's structured ShowStopper™ brake tracks provide unmatched braking performance in both dry and wet conditions. Perfectly matched to the 303 Firecrest Tubular rims, the durable, versatile ZR1-DB hubs, developed in Germany, spin at the center of the wheelset.