The sram x01 drivetrain carries on the tradition of srams championship winning 1x philosophyall the way down the mountain the setup is simpler the drivetrain is lighter and the shifting is fast and solid bottom line x01 is the right one for any terrain every time the new x01 shifter has sram39s x actuation developed specifically for sram 1x groupset it keeps shifting sharp and consistent across the entire 10 to 42 tooth cassette also with zero loss travel no lost travel befo