Zwift Hub Rubbing

Bugs and Support
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Hello! Does anyone know how to help with the issue in the picture? It appears the top wheel of my hub is rubbing against the plastic casing. This happened after I tried to switch from a regular cassette to the zwift cog. Any information on how to fix this would be greatly appreciated. Thanks!

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Hi @Tim_Podgalsky

Welcome to the forums. This is Haziel from Zwift Support. I understand that after switching to the Zwift Cog, you were hoping for a smoother virtual shifting experience, but are encountering some rubbing issues with the hub casing.

Here are a few suggestions that have been helpful for others in similar situations:

  • Check Cog seating: Make sure the Zwift Cog is fully flush against the freehub body. If the lockring isn’t tightened evenly, the Cog can sit slightly off‑axis and cause rubbing.

  • Re‑balance the pulley wheel: I will share this article, Re-balancing the Zwift Hub Pulley Wheel, which has information that might be of help.

If reseating and re‑balancing don’t solve it, please feel free to contact us.

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How hard should I have to push the pulley wheel to move it?

I took the quick release axle out but it doesn’t seem to want to move at all.