Shimano’s XT range is the original mountain bike groupset and is trusted by generations of mountain bikers around the world. Whatever the trail, whatever you ride, XT is your solution for mountain biking today. Reliable shifting and Intuitive maintenance makes XT the high performance workhorse you can count on. The all-new Shimano XT M8100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with Shimano’s new 12-speed cassettes boosts range.