The shimano xtr rd m9000 shadow design rear derailleur own the trails with the shimano xtr rd m9000 shadow rear derailleur your ticket to a smoother ride shimano understand that the trails can be treacherous to ride at the best of times and that one false move or slight glitch can break your performanceshimano understand that when yoursquore on the trails your shifting needs to not only be responsive but also seamless the featured chain stabilising switch that you can turn on and off