The Reserve 50 Zipp ZR1 ST Carbon Rear Wheel is built for riders who live in the fast lane—where aerodynamics, drive stiffness, and long-term reliability matter most. With its 50 mm rim depth and precision-engineered Zipp ZR1 hub, this rear wheel is designed to turn every pedal stroke into efficient forward motion. It’s the ideal companion for the rider who wants the speed of a deep wheel without losing the composure and control that Reserve is known for.

The carbon rim’s 50 mm depth sits at the sweet spot between aerodynamic advantage and all-condition stability. Reserve’s proprietary lay-up creates a rim that’s torsionally stiff for power transfer yet vertically compliant enough to absorb road texture. The aero profile has been refined through real-world airflow modeling, maintaining predictable handling in crosswinds and delivering measurable drag reduction at higher speeds. The 21 mm internal width supports 25–30 mm tires, giving a wide, stable base that enhances grip and lowers rolling resistance—perfect for modern high-volume road setups.

At the center of it all, the Zipp ZR1 ST hub defines mechanical precision. Developed in Germany and built with fully sealed cartridge bearings, it spins effortlessly and quietly over thousands of miles. The refined ratchet system provides quick, reliable engagement when you surge on climbs or launch into a sprint. Optimized flange geometry ensures balanced spoke tension and lateral stiffness, giving the drivetrain immediate, responsive feel under torque. Paired with a Shimano HG or SRAM XDR freehub, this version integrates seamlessly with your preferred groupset, transferring every watt through a clean, friction-free interface.... Read More