Shimano 105 FD-5800-B Front Derailleur - 11 Speed - 34.9mmShimano 105 FD 5800 B Front Derailleur 11 Speed 34. 9mm The Shimano 105 5800 series front derailleur offers light action front 2x11 speed shifting thanks to a longer lever arm and refined design. The wide link design 105 double front derailleur offers increased rigidity and improved shifting response. Wide inner link increased rigidity and takes front shifting performance to a new level, especially under heavy load. Long pull arm for light action