SHIMANO XT FD-M786 Traditional Double Front Derailleur XT FD-M786 front derailleur's cage design is optimized for exceptional tire and frame clearance Derailleur is contoured for smooth operation and has been lightened without compromising stiffness, durability or shifting reliability Wide link design increases stiffness and durability Angled clamp bolt makes the FD-M786 front derailleur easy to install on a variety of frame types. Easily accessible limit screws simplify adjustment Adjustable multi-clamp allows you to mount the Shimano M786 front derailleur on 28.6, 31.8 and 34.9mm diameter seat tubes