Zipp ZR1 Rear Axle

No, this specific component is engineered exclusively for rim brake Zipp ZR1 hubs. It will not fit disc brake configurations due to differences in axle length and hub shell design.

This kit comes pre-assembled with the necessary bearings and wave springs to restore rotational efficiency. It is designed to address play and wear in the internal hardware, but you should ensure you have the proper tools for hub disassembly before starting.

You likely need this replacement if you notice lateral play in your rear wheel, grinding sensations while coasting, or a decrease in drivetrain efficiency. If the hub feels rough or loose despite proper tension adjustments, replacing the internal bearings and springs is the standard fix.

If you are comfortable with basic hub maintenance and have the appropriate bearing press or extraction tools, you can perform this installation yourself. However, because this part relies on precise tolerances for optimal performance, a professional mechanic is recommended if you lack experience with hub internals.

The wave springs are critical for maintaining the correct preload on the bearings. They ensure the bearings remain seated properly within the hub shell, which prevents play and keeps the rotation smooth under load.