Hidden beneath your handlebars, the XX1 Eagle X-Actuation trigger shifter is the central control system for the SRAM Eagle drivetrain. With its enhanced trigger feel & the ability to shift effortlessly across 12 gears on the cassette, it is an efficient & joyful experience to use. Durable & Precise 12 Speed MTB Trigger Shifter The SRAM shifters have always offered a direct shifting action from the moment the thumb is pressed to when the chain jumps to the desired sprocket on the cassette. Every new generation of the SRAM line makes this process more precise & direct. The XX1 Eagle shifter takes this a step further & is designed to perform to the same level of efficiency & accuracy when riding the trails in your woods on the day after purchase, as it will at the end of a hardy, unforgiving race season. Technologies: Zero Loss: When you push on the lever for an up shift or down shift, the cable is engaged instantly with zero loss of movement. There is no middle-ground where you're waiting for the shift to come. Gear changes are instant & precise. X-Actuation: Developed specifically for SRAM 1x™, X-ACTUATION™, it keeps shifting sharp & consistent across the entire cassette. The feel when up shifting is a direct shifting motion. When your thumb is at the tip of its shifting stroke, the chain rolls onto the next sprocket seamlessly. Matchmaker X Integrated: The Match Maker X clamp is more than just a clamp, the Matchmaker X is compatible with all SRAM & AVID cockpit controls including disc brakes, shifters & the XLoc remote for the Reverb dropper seatposts. They can all be mounted to the one clamp, making everything on your handlebars easier to reach.