Got an older Haro Escape hardtail bike that I have enjoyed for years but it is time for new chainrings, chain and cassette. It has Shimano LX components with an XT rear derailleur. My question is should I upgrade it with XT components circa M750 series when the bike was made or do I mix in the newer M770 components with the older XT derailleur that is already there? It's a nine speed in the back. Look forward to getting this thing back up to speed. Thanks for feedback in advance.
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Thread: Updating older hardtail
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