Shimano sets the benchmark with the next generation of mountain bike shifting, Dyna-Sys 11-speed XTR Rapidfires with Vivid indexing are there slickest shifters yetLight to the touch but positive and crisp, Vivid indexing provides a constant amount of shift lever force across all 11 sprocketsInstant Release for super fast shifts, delivering the chain to the next gear the moment the lever is actuated with no hesitationMulti Release allows multiple gear changes from both levers with one sweep, further adding to the speed of shift2-Way release allows the upper shift lever to perform the same Multi Shift function when pushing with thumb, when activated by pulling the shift lever with the index finger a single release mechanism is actuatedHorizontally adjustable forged alloy I-spec II mount allows the shifter to be mounted in or outboard of the brake leverShifter features a precision indexing drum with four sets of ball bearings providing low-friction smooth shiftingLonger dual-textured carbon shift levers help to lower shifting effort by 20%Composite barrel adjusterI-spec II compatible to integrate with the XTR brake leversFor use with Dyna-Sys 11-speed onlyWeight: 198 grams