Ultegra front derailleur with toggle link construction matches the force curve of the hand more naturally. Toggle link design is light action with short lever movement & less effort at the end of shifting stroke. Wide inner link increased rigidity & takes front shifting performance to a new level, especially under heavy load. The forged wide link cradles the axle pivot at both ends providing a smooth shifting swing. Designed to work with the wider gear pitch spacing Shimano chainsets without sacrificing shifting performance on bikes with 135 / 142 mm OLD. Cable tension is adjustable on the front derailleur. Added frame support bolt for more stability under load.