With quick lever access and a light and responsive lever action, Shimano's Rapidfire Plus Deore shift lever delivers smooth control out on the trail. Deore M5100 mountain bike Rapidfire shifter pod featuring 2-way release for cost effective 11-speed shifting performance Light to the touch but positive and crisp, Vivid indexing provides a constant amount of shift lever force across all 11 sprockets 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 11-speed compatible - for use with precision 11-speed MTB drivetrains Pod design allows the use of these shifters with any brake lever I-spec-EV design is developed to attach directly to I-spec-EV brake levers Barrel adjuster for fine gear tuning Complete with Optislick inner and SP41 outer cables