The Shimano RD-M9100 XTR Shadow+ Rear Derailleur 12-Speed brings a new level of drivetrain silence thanks 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's12-speed cassettes boosts range.
Features
Enhanced shifting performance
Silent drivetrain
Decreased rear derailleur tension at low gear position, to prevent high chain tension in low gears