The Reserve 63 Zipp 176 Carbon Rear Wheel is built for pure aerodynamic efficiency — a deep-section wheel that transforms watts into effortless momentum. With its 63 mm rim profile and precision Zipp 176 hub, this rear wheel delivers a perfect blend of speed, stability, and mechanical refinement. It’s designed for riders who thrive on solo power, high-speed group rides, and long-distance efforts where aerodynamics and drive stiffness make all the difference.

The 63 mm rim depth is the product of Reserve’s proven aero engineering. Crafted using the brand’s proprietary carbon lay-up, the rim maintains exceptional torsional stiffness while remaining stable under side winds. Its aerodynamic shaping smooths airflow over the tire and rim interface, minimizing drag across real-world yaw angles. The 21 mm internal width supports modern 25–30 mm tires, allowing a broader contact patch that reduces rolling resistance, enhances cornering traction, and delivers a comfortable ride even over rough tarmac. Tubeless-ready and hookless by design, it simplifies setup and allows lower pressures for improved compliance and performance.

At the core of this wheel sits the Zipp 176 hub — a proven design known for reliability and crisp power delivery. The lightweight aluminum hub shell houses precision-sealed cartridge bearings for smooth, efficient rotation. Its quick-engaging pawl system provides consistent engagement under load, while optimized flange spacing ensures balanced spoke tension and lateral stiffness. Paired with the SRAM XDR freehub, the drivetrain interface is rock-solid, offering seamless compatibility with modern 12-speed road and gravel systems. It’s a system built for riders who want the dependability of Zipp’s mechanical engineering combined with Reserve’s aerodynamic expertise.

Each wheel is hand-built with Sapim CX-Ray bladed spokes in a two-cross pattern, chosen for their high tensile strength and low aerodynamic drag. The asymmetric spoke bed equalizes tension across the wheel, ensuring lasting trueness and consistent feel under heavy torque. Reserve’s meticulous assembly and quality control ensure every wheel leaves the stand ready for the demands of race or high-mileage performance. The result is a wheel that feels fluid at speed, resilient under load, and remarkably composed through crosswinds.

The Reserve 63 Zipp 176 Carbon Rear Wheel is built for those who take speed seriously — the riders who stay tucked, stay smooth, and know that every detail counts. It’s aerodynamic in design, exact in construction, and built to handle years of performance riding. Whether it’s the final kilometers of a race or the longest solo stretch of your season, this wheel gives you the stability, precision, and speed to ride beyond expectation.