Shimano XTR RD-M9100 Rear Derailleur Shadow+ 12 Speed Long Cage 51T Max GSRD Internal Width 21mm | 21mm

Internal Width 21mm | 21mm

this Fly Cage Poly screams style

Direct Mount Hangers improve shift quality and allow for quicker wheel changes

Wide contact platform

Shimano XTR RD-M9100 Rear Derailleur Shadow+ 12 Speed Long Cage 51T Max GSRD Internal Width 21mm | 21mmTight and precise. Designed to withstand full force pedalling on the roughest trails, while shifting gears as smooth as ever. Shimano's best chain stability yet. Features Shadow RD+ for optimal chain retention Decreased rear derailleur tension at low gear position, to prevent high chain tension Added bumper at rear derailleur pulley cage Optimized for new drive system Specifications Cage Length: choose; GS Medium, or SGS Long Total Capacity: 35T