The Zipp 303 S is a modern road wheel designed for those who value real-world efficiency, not just wind tunnel numbers. It uses a hookless carbon rim with a 23 mm internal width, optimized for wide tires (28–32 mm), where today more is gained in comfort, traction, and average speed.

It is tubeless-ready / tubeless-only, allowing for lower pressures and lower rolling resistance, especially on irregular asphalt and secondary roads. The 45 mm profile balances aerodynamics and stability in crosswinds, making it an extremely predictable and easy-to-control wheel.

Although it clearly belongs to th...