303 SW Tubeless Disc-brake

The Zipp 303 SW is crafted with the multi-surface rider in mind - bringing Zipp's legacy of innovation to road, gravel, cobbles and cyclocross in one modern classic. However, the 303 SW does more than go anywhere; with tire compatibility to tires up to 55mm, it opens up even more terrain, and its rim internally integrates the Zipp AXS Wheel Sensor for accurate on-bike tire-pressure monitoring. Taking design cues from the gravel-specific 303 XPLR, the 303 SW's 40mm deep rim uses a wide design for high aero efficiency and low rolling resistance on a wide tire platform built for modern riding at lower tire pressures. The rim's profile provides low drag and an improved transition between rim and tire, boosting aerodynamic efficiency with wider tires. A revised carbon layup and design give the already bombproof 303 SW almost 10 percent better impact strength at a light weight, and its refined rim shape helps shield the tire in an impact that would otherwise cause a pinch flat. At the center, the ZR1 hubset now features stainless steel bearings for improved durability and smoother performance. The result is a wheelset optimized for 30 to 35mm tires and compatible with tires up to 55mm, built for whatever surface the ride throws at you.