303 XPLR S Carbon Tubeless Wheelset The Zipp 303 XPLR S Carbon Tubeless Wheelset represents a paradigm shift in gravel performance, engineered specifically for those who want to ride faster and further across unpredictable terrain. By merging a deep 54mm aerodynamic profile with a revolutionary 32mm internal rim width, this wheelset eliminates the compromise between high-speed efficiency and off-road capability. The wide-rim architecture is designed to host 40c to 60c tyres with a seamless transition, creating a cohesive aero unit that slices through the wind while providing the massive air volume needed to float over jagged rocks and corrugated paths. It is the definitive upgrade for the gravel racer looking to master the "Total System Efficiency" of their machine. Unmatched Compliance and Traction At the heart of the 303 XPLR S experience is the ability to run incredibly low tyre pressures, often dipping well below 30psi. This drastically reduces rolling resistance on rough surfaces and acts as a natural suspension system, absorbing high-frequency vibrations before they reach your hands and spine. The ultra-wide 32mm internal platform provides unparalleled sidewall support, ensuring your tyres remain stable and predictable during high-speed cornering or technical climbs. Whether you are navigating loose flint or damp forest tracks, the expanded contact patch ensures that every watt of energy is converted into forward momentum, keeping you fresh and in control deep into your ride. Rugged Durability for Infinite Adventures Zipp has balanced cutting-edge carbon technology with a build quality meant for the real world. Both the front and rear wheels feature a robust 24-spoke, 2-cross configuration with Sapim CX Sprint spokes and brass nipples, ensuring the wheelset remains true despite the relentless rattling of gravel racing. Compatible with Centre Lock disc rotors and featuring dependable carbon steel cartridge bearings, the 303 XPLR S is as practical as it is fast. With a generous 135kg system weight limit and the security of Zipp’s Lifetime Warranty, this wheelset is a long-term investment in your cycling ambitions, providing the peace of mind required to tackle everything from local weekend loops to the most grueling ultra-endurance events.