The Zipp 303 SW Tubeless Disc wheels are engineered for elite performance across modern road and multi-surface conditions, from asphalt to gravel, cobbles, and cyclocross. Replacing the Firecrest Series and drawing design inspiration from the gravel-oriented 303 XPLR, the 303 SW features a 40mm deep carbon rim optimized for 30–35mm tires, striking a balance between aerodynamic efficiency and reduced rolling resistance. Its wide hookless internal rim width of 25mm allows for lower tire pressures, enhancing comfort, grip, and speed while minimizing fatigue from road vibrations. This wheelset is fully tubeless-ready, compatible only with tubeless tires, and designed exclusively for center-lock disc brakes.

One of the 303 SW’s defining features is the built-in Zipp AXS Wheel Sensor, delivering real-time tire pressure monitoring directly from the rim—no need for external valve-mounted devices. Riders can check for a green-light “ready” status before rolling out and make mid-ride pressure adjustments to match terrain demands. By allowing early detection of pressure anomalies and precise fine-tuning, this system elevates control, confidence, and speed. The refined rim shape also improves aerodynamic transition with wider tires while shielding against pinch flats, maintaining ride quality even over harsh terrain.

At the wheel’s core is Zipp’s proven ZR1 hubset, now upgraded with stainless steel cartridge bearings for long-lasting smoothness and reduced maintenance. A revised carbon layup boosts impact strength by nearly 10%, adding durability without compromising the wheel’s impressively low weight—just 1440g in its lightest configuration. Built to endure everything from high-speed road descents to rugged gravel tracks, the 303 SW wheelset balances speed, stability, and toughness for versatile performance.

Each wheel is built with CX-Sprint spokes in a 2-cross pattern, paired to aluminum nipples for optimized stiffness and response. Designed for thru-axles (12x100mm front, 12x142mm rear), the wheels accommodate SRAM XDR and HG driver bodies, with Campagnolo options available separately. With features like Total System Efficiency (TSE), a Center Lock rotor interface (lockrings included), and a generous system weight limit of 265lbs, the 303 SW is not only future-proof but also backed by Zipp’s lifetime warranty. Model ID: WH-303-SW-A1.