Shimno39s xtr group meets the dreams of trail riders everywhere looking for a component group that truly complements how where and why you ride crafted with all the precision and strength riders have come to expect from shimano focused specifically on the demands of todayrsquos trail riders this 10 speed dyna sys mountain bike cassette combines stiffness with consistently smooth shifting performance and durability in an innovative and lightweight package three alloy carriers and 5 tita