Shimano39s deore xt groupset has long been recognised as an exceptionally high performer for 2012 the group continues to evolve to meet the changing demands of the latest bike designs and riding styles and long may it continue the shimano deore xt shifters are dyna sys 10 speed shifters which feature vivid indexing multi and 2 way release to deliver more performance than you ever thought possible light to the touch the vivid indexing ensures positive crisp shifts by making sure there