Selling some bike parts which I had bought for a build that never materialized! This XTR derailleur was mounted and tested, but never ridden. Essentially, you have here a brand new derailleur, in absolutely MINT condition! Retails for $180 USD + taxes etc., get it here MUCH CHEAPER! I'm also selling a matching XTR shifter, XT crankset, XT BB and some other goodies--check out my other listings! Thanks for looking!