Delivering quiet and smooth shifting, SHIMANO's FD-M5100 2x11 front derailleurs feature SHIMANO's new SIDE SWING technology. The new design offers enhanced cable routing, light action, and increases clearance for large wheels and short chain stays. Smooth and quiet front shifting on the trail More powerful outward shifting Wider traction range reduces chain rub for rear suspension bikes Extra wide range with front double 36-26T Wider tire clearance Compatible with 2.3-inch tire on wider rims One spec for 48.8 mm and 51.8 mm chainline Side Swing Angled stroke adjust bolt Chain stay angle: 64-69 Compatible chain: HG-X11 11-speed Link bushings: 4 Direct Mount Speeds: 2x11 Top gear teeth: 36T Total capacity: 10T