The Reserve 65 Zipp ZR1 ST Carbon Rear Wheel is built for riders who live for pure speed — when momentum, aerodynamics, and drivetrain efficiency must work in perfect harmony. With a deep 65 mm rim and Zipp’s precision-engineered ZR1 hub, this rear wheel delivers explosive acceleration, sustained velocity, and the stability to harness every watt on open roads or time-trial courses. It’s Reserve’s most aerodynamic one-off rear wheel paired with a hub that’s as fast as it is reliable.

The 65 mm rim depth gives this wheel its unmistakable attitude. Sculpted through Reserve’s advanced carbon lay-up and aerodynamic modeling, it minimizes drag across a broad range of yaw angles while maintaining control in gusty winds. The deeper profile adds stiffness under torque and ensures confident tracking when you’re out of the saddle or powering through crosswinds. The 21 mm internal width supports 25–30 mm tires, producing a stable, aerodynamic tire-to-rim transition that reduces turbulence and increases rolling efficiency. The result is speed that feels smooth, controlled, and continuous — not twitchy or fragile.

At the center, Zipp’s ZR1 ST hub defines mechanical precision. Developed in Germany and engineered for minimal friction, it features fully sealed cartridge bearings that spin effortlessly through thousands of race or training miles. Its refined ratchet system engages fast and evenly, converting power into forward motion with no lag. Optimized flange spacing enhances spoke alignment for superior stiffness and durability, while the lightweight shell keeps rotational mass to a minimum. The ZR1 ST hub is a perfect partner for Reserve’s deep carbon profile — quiet, smooth, and built for real-world performance.

Each wheel is hand-built using Sapim CX-Ray bladed spokes and Reserve’s meticulous tensioning process. The asymmetric spoke bed balances load across the drive and non-drive sides, maintaining long-term trueness and consistent engagement under high torque. The hookless, tubeless-ready rim simplifies setup, reduces rolling resistance, and allows for lower tire pressures to improve traction and comfort. Whether paired with a fast 50 mm front or ridden solo as a race-day upgrade, the Reserve 65 ZR1 ST rear wheel is designed to amplify your speed without compromise.

This wheel isn’t just about going faster — it’s about control at high speed, efficiency under power, and a sense of fluid connection between rider and road. From the moment you press down on the pedals, the Reserve 65 ZR1 ST Carbon Rear Wheel transforms energy into effortless momentum. It’s the culmination of carbon craftsmanship, aerodynamic intuition, and mechanical precision — made for riders who understand that real speed feels both powerful and calm.