Zipp Cognition NSW Front End Cap

You should consider replacing your end caps if you notice side-to-side play in the wheel while it is mounted, or if the wheel does not spin as smoothly as it once did. These caps are designed to maintain factory-spec tolerances, so any looseness or binding is a clear indicator that the interface between the axle and frame has worn down.

No, these are specifically engineered for the Zipp Cognition NSW front hub. They will not fit older Zipp hub models or the standard Zipp 77/177 hub platforms, so please verify your hub model before purchasing.

Generally, these end caps are designed to be press-fit or hand-installed depending on the specific hub generation, but you should consult your Zipp service manual for the exact procedure. Using the wrong tools can damage the delicate bearing seals or the cap itself, so precision is key.

Yes, this is a complete set designed to service the entire front hub assembly. Replacing both sides simultaneously ensures that the axle is properly centered and that the hub maintains consistent, factory-spec alignment.

If your current end caps are worn, replacing them will absolutely improve handling. By eliminating play and preventing binding, these caps ensure the wheel tracks straight and rotates efficiently, which is essential for the precise steering feel Zipp wheels are known for.