Wide link design 105 double front derailleur for increased rigidity and improved shifting responseWide inner link increased rigidity and takes front shifting performance to a new level, especially under heavy loadFor 11-speed drivetrainsToggle link design is light action with short lever movement and less effort at the end of shifting strokeDesigned to work with the wider gear pitch spacing Shimano chainsets without sacrificing shifting performance on bikes with 135 / 142 mm O.L.D.Support bolt provides added stabilityMaximum capacity of 16 teeth with 46-53 tooth outerThe aluminium parts are coated to resist corrosion and maintain their great looks