Zipp 858 NSW Wheel

The sawtooth design is engineered to improve aerodynamic efficiency and crosswind stability. By creating a more consistent airflow, it helps the wheel handle unpredictable gusts better than a standard deep-section rim.

The Zipp 858 NSW features a hookless rim design, which is specifically optimized for tubeless-ready tires. While you can use an inner tube with a tubeless tire in an emergency, you must use a tubeless-compatible tire and run it without a tube for the best performance and safety.

The Cognition V2 hub uses an Axial Clutch mechanism that disengages the ratchet when you stop pedaling. This significantly reduces internal friction, allowing you to coast faster and maintain momentum more effectively.

While the 858 NSW is optimized for speed on flat or rolling terrain, its carbon construction keeps it relatively lightweight for a rim of this depth. However, if your rides involve significant, sustained climbing, you might prefer a shallower rim profile for better handling and weight savings.

The wider internal rim width is designed to better support modern, wider tires. This allows you to run lower tire pressures, which decreases rolling resistance and improves comfort without sacrificing speed.

Yes, this wheel uses a standard Center-Lock disc brake interface and a 12mm x 142mm thru-axle, making it compatible with most modern road and triathlon disc brake frames.