SRAM X1 Black 11 Speed Right Trigger Shift Lever - Bar Clamp & SRAM MatchMaker X - 11 SpeedPut your finger on the pulse of sharp, dependable shifting with the SRAM X1 X ACTUATION trigger shifter. Built for precise and swift shifting across the wide range SRAM 11 speed cassette, the X1 trigger shifter brings championship technology to every ride. SRAM 1X X ACTUATION for precise and dependable 11 speed performance Zero Loss Engagement for fastest shifting MatchMaker X compatible Aluminium cover and forged aluminium pull lever 22. 2mm bar