The Shimano XTR M9100 is designed to withstand full force pedaling 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 1×11 and 1×12 set ups
Will accommodate up to a 51-tooth cog
Color: Gray
Largest Cog: 51
Rear Derailleur Mount Type: 10×1 Standard
Chain Wrap Capacity (teeth): 41
Cage Length: Long
Rear Der/Shifter Compatibility: Shimano Mountain
Drivetrain Speeds: 12
Weight: 240
Model: XTR RD-M9100 Rear Derailleur
Brand: Shimano
Manufacturer Part Number: IRDM9100SGS
UPC: 689228880252