I'm looking to buy a couple of used rear der. for back ups. (I go through these things like water). What is the difference between an XT RD-M750 and a RD 761 SGS? Any or just preferences? I have both a 9 speed FS and an 8 speed HT, so ideally I'd like to have these back ups for either bike. BTW, I do not have rapid rise, just standard shifters on both bikes. Thanks for the input in advance!
Mtbr's 2016 Winter Biking GearReviews and Roundups
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