I have a Trek 4900. My Rear Derailleur is a Shimano LX. I currently have an 8 speed configuration. I want to upgrade it to a 9 speed setup. Is it possible to do it on the same hub? What are the things that I need to change on my bike in order to switch to a nine speed config? Thanks.
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: upgrading 8speed to 9speed