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  • I think a 32 may require a longer cage derailleur, but 28 should be fine.

  • I think a 32 may require a longer cage derailleur

    Almost certainly. Nominal maximum tooth on a short cage Shimano has been 27T since about 1741, they could always be pushed a bit as the hanger geometry assumed by the spec was quite conservative, but only as far as 29 or 30.

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