Tough, aggressive & light weight Dyna-Sys 11 left hand SLX Rapidfire shift levers with Vivid indexing & 2-way release function. Light to the touch but positive & crisp, Vivid indexing provides a constant amount of shift lever force. 2-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 finger. Pod design allows the use of these shifters with any brake I-spec-II lever. Removable optical gear display with integrated cover allows the use of these shifters with any brake lever.