Deore XT SL-M8100 - XT SL-M8100-IR Shifter - XT SL-M8100-IR Shifter Options:XT SL-M8100-IR Shifter - Right, 12-Speed, I-Spec EV, RapidFire Plus, Black Includes a self-tightening T20 /

Includes a self-tightening T20 / 2

or 9mm solid hub axle

2-way computer mount that provides 3 mounting position options

and neutral positions

Deore XT SL-M8100 - XT SL-M8100-IR Shifter - XT SL-M8100-IR Shifter Options:XT SL-M8100-IR Shifter - Right, 12-Speed, I-Spec EV, RapidFire Plus, Black Includes a self-tightening T20 /Deore XT SL M8100 Shifter I SPEC EV creates a clean and action optimized cockpit with a wider adjustment range to suit riders of various styles, preferences, and body types Ergonomic design, quicker lever access, and light operation enhance rider comfort and concentration Instantaneous push and pull movements