With the all-round 303 Firecrest Tubeless wheelset for rim brakes, Zipp ushers in a new era of road cycling. It is rich in legendary heritage as well as innovations. It feels at home everywhere – in the mountains as well as on rolling hills, on wind-swept country roads, and in the chaos of a group sprint. Because we never rest on our laurels. These wheels have a rim width of 19 mm and are tubeless-ready. This means you can run them at lower tire pressures, resulting in more corner grip, less rolling resistance, and reduced risk of punctures. When it comes to speed, the 303 Firecrest Tubeless hits the mark decisively. It is lightweight and features 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.