The XTR M9100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.
Enhance shifting performance Optimized for new drive system Silent drivetrain Decreased rear derailleur tension at low gear position, to prevent high chain tension at low gear Add bumper at rear derailleur pulley cage Bigger 13T pulley Low profile design
Average weight: 240 Compatible chain: HG 12-speed Total capacity: 41T Fluoric coated link bushings: 8 Low sprocket_Max.: 51T Low sprocket_Min.: 51T Max. front difference: 0T Pulley_Teeth: 13T Pulley cage: SGS Speeds: 12 Top sprocket_Max.: 10T Top sprocket_Min.: 10T