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 for silent drive Low profile design SHIMANO SHADOW RD+ For more aggressive riding
SERIES: XTR M9100 Series Average weight: 237 Compatible chain: HG 12-speed Total capacity: 35T B-axle_Hollow axle Fluoric coated link bushings: 8 Low sprocket_Max.: 45T Low sprocket_Min.:45T Max. front difference: 0T Pulley_Teeth: 13T Pulley cage: GS Speeds: 12 Top-Normal spring type_SHADOW RD+ Top sprocket_Max.:10T Top sprocket_Min.: 10T