Dyna-Sys 10-speed shifters with Vivid indexing & Multi & 2-Way release to exceed the demands of ever changing bicycle designs & riding styles Light to the touch but positive & crisp, Vivid indexing provides a constant amount ofshift lever force across all 10 sprockets 2-Way release: the upper lever still performs the same shift function, but it can now swing in either direction allowing it to be released by the thumb or index finger Multi Release allows multiple gear changes from both levers with one sweep, further adding to the speed of shift Multi-bearing design uses two ball bearing units to provide a low-friction & reliable shifting action One piece lower alloy thumb release lever increases durability & givessharp precise shifts For use with Dyna-Sys 10-speed only Raised optical gear display instantly shows you what gear youre in & allows clearance for suspension lock out clamps below Multi-position adjustable handlebar clamp for custom lever positioning Can be adapted using ISpec mounts to fit directly to XT M785 brake levers Average weight 255 grams