Zipp 303 Carbon Road Wheels will provide you with speed, optimal aerodynamics and a stiff and responsive ride quality for all the roads ahead. The Zipp 303 S Carbon Tubeless Disc Centrelock Rear Wheel will provide you with the speed you crave. With a 45mm rim depth, this wheel is ideal for every terrain. Featuring a wider internal width, this wheel offers greater performance and ride quality in every way. This wheel will make your bike more versatile than ever, on every road surface, without compromising on speed. This wheel is tubeless for disc-brake bikes, allowing the ability to run wide tyres at lower pressures for race-ready speed on or off the pavement. This wheel gains speed through increased efficiency, as it has reduced wind resistance, rolling resistance, rider fatigue and weight. This is a ground breaking wheel. Fastest with 28mm, fits wide gravel tires as well XDR driver body Lower tire pressures and larger volume provides a compliant ride with fewer vibrations.