The 303 S is among our lightest wheelsets, optimized for top aero performance with a 28mm tire but capable of handling gravel tires up to 50mm wide. The key innovation is in the 303 S’s rim design. Its 45mm rim depth is the same as its predecessor, the 302 Disc brake. But its external rim width is 2mm wider, at 27mm, and its tire bed is a full 7mm wider, at 23mm internal width. That rim platform is designed to be the fastest with a 28mm tire. The wide rim optimizes tire profile to allow lower tire pressure. That helps to reduce rolling resistance and provides a more compliant ride. The result of all this is a 10 watt savings vs. a top peer wheel in total power required to ride 40kph on a flat road with a 28mm tire, according to internal Zipp testing. This groundbreaking wheelset also features updated cosmetics, setting the rider apart from the pack, and comes at an attractive price.

FEATURES OF 303 S

• Zipp graphics and cosmetic identity that scream speed
• Fastest with 28mm, fits wide gravel
• tires as well
• Wide rims optimize tire profile to allow lower tire pressure, especially with tubeless. The result is a larger contact patch for increase grip for confident cornering, descending, and handling in wet conditions.
• Lower tire pressures and larger volume provides a compliant ride with fewer vibrations
• Significant watt savings when running larger tires at lower pressure
• Wide hookless rims create a seamless transition to the tire, reducing drag
• 76 / 176 DB hubs with center locking interface
• XDR driver body option
• Lock ring included
• Lifetime Warranty (Owner Registration)