Tough, aggressive and lightweight 12-speed SLX Rapidfire I-Spec EV shift levers with vivid indexing and 2-way release function. They provide a light touch but positive and crisp shifting experience, with vivid indexing offering a constant amount of shift lever force across all 12 sprockets. The 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. These shifters are designed for use with 12-speed transmissions only. The pod design allows the use of these shifters with any brake I-spec-II lever, and the removable optical gear display with integrated cover allows for flexibility in setup. A barrel adjuster is included for fine gear tuning, and the shifters come complete with inner and outer cables. The multi-position adjustable mount allows for custom lever positioning, and the I-spec-II design is developed to attach directly to I-spec-II brake levers.