Shimano sets the benchmark with the next generation of mountain bike shifting, Dyna-Sys 10-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 10 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 performs the same Multi Shift function but swings in either direction allowing it to be released by the thumb or index fingerForged alloy clamp bracketShifter features a precision indexing drum with four sets of ball bearings providing low-friction smooth shiftingOne piece anodised alloy release levers increase durabilityMode converter for double / triple useComposite barrel adjusterPod design can be converted to ISpec to integrate with the XTR brake leversFor use with Dyna-Sys10-speed onlyWeight 207 grams a pair