Shimano CS-770 XT Bicycle Cassette

Engineered for the way you ride. As Mountain bikes continue to become more diverse, obviously components must evolve. New Shimano Deore XT addresses the various needs of today's riders. New mechanism rear derailleur "SHIMANO SHADOW RD", specially designed for all mountain riding. Together with double-servo mechanism derailleurs now, you have the right choices for several off road riding styles. New XT disc brake, a new level of performance and controllability, features high power braking. "Engineered for the way you ride". With the same concept to as XTR, new DEORE XT is born.