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Discussion Starter · #1 ·
New XTR Chain on used XTR Cassette & jockey wheels making my rear derailleur 'swing'

I replaced my XTR chain two days ago and was riding 'softly' in order to make my used cassette adapt to the new chain.

Using the middle and small chain ring, whenever I applied stress on the chain riding in a sprocket that was relatively new, I noticed that my rear derailleur was being 'swung' whenever the pressure was relatively substantial.

Moreover, using the large chain ring, I did not see this happen since the rear derailleur would already be 'extended' when using the large chain ring.

I thought of having the jocket wheels replaced maybe that is the cause. However, I am not sure, thus hopefully someone here can suggest the cause of the problem.

Thank you for your advice!
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