Description
Versatility Meets Race-Winning Speed
The Zipp 303S Disc Brake Wheelset provides today’s cyclists the versatility they demand with the speed they crave. Expanding greatly on its heritage of conquering the Spring Classics, this 303 wheelset evolves significantly. Maintaining the ideal-for-every-terrain 45mm rim depth, it adds significantly wider internal width. This expansion provides greater performance and ride quality in almost every measurable way. Consequently, modern road bikes achieve versatility across any road surface while maintaining speed that rivals traditional racing setups.
Revolutionary 45mm Rim Design
The 303S features an entirely new rim profile and design optimizing rider performance. The 45mm rim depth maintains the same dimension as its predecessor, the 302 Disc brake. However, the rim width increases 2mm to 27mm external measurement for improved aerodynamics. Moreover, the tyre bed expands a full 7mm to 23mm internal width dramatically. This rim platform is designed specifically to be fastest with a 28mm tyre. Therefore, the Zipp 303S delivers cutting-edge performance through intelligent dimensional optimization and engineering refinement.
Hookless Tubeless Construction
Advanced hookless rim design creates seamless transition to the tyre, reducing aerodynamic drag significantly. The tubeless-ready construction allows running wide tyres at lower pressures for race-ready speed. This capability serves both pavement racing and off-road gravel adventures equally well. Hookless design simplifies tyre installation while maintaining secure bead retention at appropriate pressures. Furthermore, the construction reduces rim weight compared to traditional hooked bead designs. Consequently, riders benefit from aerodynamic advantages, weight savings, and installation convenience through modern rim technology.
| Model | Zipp 303S Tubeless Disc Brake Wheelset |
|---|---|
| Year | 2025 |
| Rim Depth | 45mm |
| Rim Width (External) | 27mm |
| Rim Width (Internal) | 23mm |
| Rim Design | Hookless tubeless-ready |
| Brake Type | Disc brake only |
| Front Hub | Zipp 76 DB with CenterLock interface |
| Rear Hub | Zipp 176 DB with CenterLock interface |
| Driver Body | XDR |
| Rotor Interface | CenterLock |
| Optimized Tyre Size | 28mm (fastest performance) |
| Maximum Tyre Width | 50mm (gravel tyres) |
| Tubeless Compatible | Yes, tubeless-ready |
| Weight Class | Among Zipp’s lightest wheelsets |
| Performance Claims | 10% watt savings vs top peer wheels at 40kph with 28mm tyre (internal Zipp testing) |
| Key Features | 45mm depth, 23mm internal width, hookless design, tubeless-ready, CenterLock hubs, XDR/HG compatibility |
| Performance Benefits | Reduced wind resistance, rolling resistance, rider fatigue, and weight |
| Intended Use | Road racing, gravel riding, all-road cycling, Spring Classics-style terrain |
| Heritage | Spring Classics conquering lineage, borrows design from 303 Firecrest |
