Sram x9 10sp trigger shifter setsram have upgraded materials and incorporated a ball bearing mechanism for smooth and reliable shifting the most significant upgrade is our zero loss technology zero loss tech decreases the lever travel required to execute a shift the rider experience a super fast and precise shift x9 2x10 and 3x10 shifters are exact actuation for sram 10 speed rear derailleurs from steep endless climbs to hair raising technical descents x9 is engineered to handle whatever