The Zipp 303 Series S tubeless disc brake wheelset offers today's cyclists the versatility they demand and the speed they are looking for. True to its heritage of winning great early season classics, the 303 Series retains a rim height of 45mm ideal for all terrains, but gains in internal width to deliver superior performance and ride quality in almost every measurable situation. Road bikes are more versatile than ever, whatever the road surface, but still remain as fast as ever. With a completely redesigned profile and rim design, the 303 S optimizes the rider's performance on this new generation of bikes. These tubeless wheels, designed for disc brake bikes, allow wider tyres to be fitted at lower pressures for road or road racing. The 303 S model is one of our lightest wheel pairs, optimized for top aerodynamic performance with a 28 mm tire but capable of accommodating gravel type tires up to 50 mm wide. The 303 S Series builds on the concepts of the top-of-the-range 303 Firecrest t...