The nerve centre of the new XX1 Eagle drivetrain, this 1x Sram XX1 Eagle Trigger Shifter has been updated to include a 12th gear & to enhance trigger feel, precision, & durability. Whether youre 3 laps into a race or 150 days into your season, the new mechanism will be smoother & more precise than standard XX1 with exceptional reliability. X-Actuation provides the same shifting feel & force required for all 12 cogs while Zero Loss ensures that the cable is engaged the instant you press the shifter. Matchmaker X integration allows a wide range of mounting options. Description by Mark, Rutland Cycling Web Team.