Zipp 404 S Wheelset

The Zipp 404 S Carbon Tubeless Wheelset is a ground-up redesign engineered to deliver the fastest possible road wheel at an accessible price point, offering the discerning cyclist an ideal balance of weight, aerodynamics, and aesthetics. Building upon the groundwork laid by the 303 S, this next-generation S-level road wheel brings industry-leading aerodynamic performance to road racers, criterium specialists, and high-performance pavement riders who demand more from their equipment.

At 50mm deep, the 404 S mid-depth rim profile borrows from Zipp's WorldTour-proven Firecrest rim design, delivering premium aerodynamic performance while staying shallow enough to maintain confidence-inspiring stability in crosswinds. This carefully considered depth saves approximately 2 watts over the 303 S and outperforms competitor wheels that cost more than double the price, a remarkable achievement in performance-per-dollar that defines the entire S Collection philosophy.

Zipp's aero development goes beyond the wind tunnel. By layering real on-bike data with over a million historical wind data points, the 404 S was optimized around the actual probability of time spent riding at any given yaw angle, distilled into one meaningful number: weighted aero drag. The result is a wheelset that performs precisely where it matters most, on real roads, in real conditions, at real speeds.

The 23mm internal rim width pairs perfectly with 28-40mm tires run at lower pressures, minimizing vibration and rolling resistance across nearly any road condition. This tubeless-optimized hookless design allows riders to extract maximum efficiency and comfort from modern wide tires without sacrificing the aerodynamic advantage the 404 S was built to deliver.

At the heart of the 404 S sits Zipp's legendary 76/176 hub, featuring three pawls and 36 points of engagement for immediate, confident power delivery. Whether launching a criterium sprint or powering through a road race attack, this proven hub ensures every watt of effort translates directly into forward motion. Pro-level graphics in white or dark grey match professional team builds, bringing WorldTour aesthetics to any bike

Key Features

• 50mm Firecrest-Inspired Rim Profile - Mid-depth aerodynamics deliver 2-watt savings over the 303 S with crosswind-stable confidence
• Zipp 76/176 Hub - Three-pawl, 36-point engagement system delivers immediate, reliable power transfer and sprint-ready responsiveness
• 23mm Internal Width Tubeless Design - Optimized for 28-40mm tires at lower pressures for reduced rolling resistance and superior road feel