First integrated, connected SRAM AXS wheel with Zipp AXS Wheel Sensor; ability to use sensor with compatible tube

A revised carbon layup and design also infused the already bombproof 303 SW with an almost 10 percent improvement in impact strength at a light weight. The 303 SW is optimized for tires 30 to 35mm in width. The 303 SW rims feature a refined shape that helps shield the tire in an impact that would otherwise cause a pinch flat. At the center of this is the ZR1 hubset, which now has stainless steel bearings for improved durability and smoother performance.

The 303 SW’s 40mm deep rim design takes design cues from the gravel-specific 303 XPLR to utilize a wide rim design for high aero efficiency and low rolling resistance on a wide tire platform designed 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.

• ZR1 hubset with stainless steel bearings
• TSE for greater efficiency and reduced rolling resistance
• Optimized for 30 to 35mm tires
• Center locking rotor interface. Lockring is included with the wheels.
• Shimano driver bodies
• Hookless, tubeless tires only
• Lifetime warranty