Tough, aggressive and light weight Dyna-Sys 10-speed SLX Rapidfire shift levers with Vivid indexing and 2-way release functionLight to the touch but positive and crisp, Vivid indexing provides a constant amount of shift lever force across all 10 sprockets2-way release allows shifting from various riding positions; 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 fingerFor use with Dyna-Sys 10-speed onlyPod design allows the use of these shifters with any brake I-spec-B leverRemovable optical gear display with integrated cover allows the use of these shifters with any brake leverBarrel adjuster for fine gear tuningComplete with inner and outer cables2nd generation I-spec-B design is developed to attach directly to I-spec-B brake levers