Kogel Bearings Kolossos Oversized Pulley Cage

Upgrade for Shimano XTR and XT 12 speed rear derailleurs. Built to offer extremely low friction paired with increased stiffness for loss free shifting. Long tooth profile on lower pulley offers best possible chain retention. Lower pulley assembly features a chain catcher to prevent jams. Can be used dependably on or off road. Oversized 14 and 18 tooth Kogel pulleys