The Zipp 303 SW Tubeless Disc Wheel is designed for road, gravel, cyclocross, cobbles, and everything in between. Featuring a 40mm deep rim inspired by the gravel-ready 303 XPLR, the 303 SW offers aero efficiency and low rolling resistance. It is best when paired with wide tires at lower pressures. The rim profile supports tire widths between 30 to 35mm and improves the transition between tire and rim for reduced drag and enhanced control. A revised carbon layup increases impact strength by nearly 10 percent without compromising weight. This construction, along with a wide rim stance that limits tire deflection, contributes to a smoother ride. The setup absorbs road vibrations and minimizes rider fatigue. The integrated Zipp AXS Wheel Sensor enables in-wheel, real-time tire pressure monitoring without requiring an external valve-mounted device. Riders can check pressure before a ride and monitor it on the move to dial in performance or catch issues early. At the core of the 303 SW is the ZR1 hub, now upgraded with stainless steel bearings for improved longevity and smoother operation. The wheel features a center-lock rotor interface and includes lockrings, with compatibility for XDR and Shimano driver bodies. Campagnolo drivers are sold separately. The 303 SW is one of the most versatile wheels Zipp has ever made.