Ritchey Hub Bearing Kit

This kit is specifically engineered for the Ritchey WCS Zeta Disc and WCS Zeta GX rear hubs. It is not designed for other hub models, so please verify your wheelset model before purchasing.

You likely need new bearings if you notice grinding or crunching sensations while spinning the wheel, or if there is noticeable side-to-side play in the hub axle. If the wheel no longer spins as freely as it once did, it is usually a sign that the bearing seals have failed or the internal races are worn.

Yes, these are authentic OEM replacement parts. Using genuine Ritchey components ensures the exact fit and tolerance levels required to maintain the original performance and longevity of your hub.

Yes, replacing hub bearings typically requires a bearing press and appropriate drifts to ensure they are seated squarely without damaging the hub shell. If you are not comfortable with precision mechanical work, we recommend having a professional bike mechanic perform the installation.

This kit is designed for the rear hub shell bearings. Please check your specific hub service manual to confirm if your maintenance needs also require separate freehub body bearings, as those are often serviced or replaced differently.