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I currently have a road bike with the following setup for the gears:

9-speed Tiagra front and rear derailleurs, Sora shifters, all from 2009: 30/39/52 Crankset 11-25 Cassette.

I need some more low gears for hilly areas, and I am thinking of switching to a 9-speed Deore XT derailleur and 11-32 cassette. Is it possible / compatible? Do you think that cross-chaining would be an issue? Will I need a new chain?

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Yes, that will work just fine. I have a similar setup on my touring bike, Tiagra shifters and an LX derailleur.

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  • Yep, so long as it's all 9-speed it should be fine. 10 speed mountain stuff uses different pull ratios and may have issues with road shifters. – Benzo Sep 26 '12 at 0:24

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