If your bearings are feeling notchy, or the pulley teeth have rounded out, it's in your best interest to replace them to get the best shifting performance out of your drivetrain. These are genuine Shimano replacement pulleys for the XTR M9000 11-speed mountain rear derailleur, sealed bearings included. Each kit includes two pulleys, enough for one derailleur.
-Replacement pulley wheels for Shimano XTR M9000 rear derailleurs
-Includes two pulley wheels, enough for one derailleur
-Compatibility: XTR M9000-series rear derailleurs
-Recommended Use: mountain biking
-Manufacturer Warranty: 3 years