Shimano XTR RD-M9100 SGS Rear Derailleur 12 Speed Long Cage

The Shimano XTR M9100 is designed to withstand full force pedalling on the roughest trails, with smooth shifting and exceptional chain stability. It offers enhanced shifting performance, a low profile design, and low sprocket compatibility. -Designed with a Shadow RD+ clutch to reduce chain slap and create a quiet drivetrain with less distraction -Decreased rear derailleur tension at low gear positions prevents high chain tension -Features a larger 13-tooth pulley -For use with 1x11 and 1x12 set ups, but only up to a 45-tooth cog