I'm setting up my wife's old Giant Yukon for my 11 year old and I'm thinking about upgrading to a 9 speed. I don't care about the extra gear but I'd like to put an 11-34 cassette on it and I can't find anything more than 11-32 in an 8 speed. The other reason I'm considering the change is the Deore shifter and derailleur doesn't work all that well and Sram X.7s (or LX) can be had fairly inexpensively.
My question is if I make the change, will I have to change the chainrings? That may put it over my expense threshold at which point he'll have to suffer with the 11-32 and push the bike until he muscles up!
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