The Shimano Ultegra FD-6800/6700/6703 Front Derailleurs are designed for road bikes and are compatible with 11-speed drivetrains. It features a 43.5mm chainline and revised actuation ratio that in combination with the ST-6800 shifter and polymer-coated cables, delivers a shorter stroke at the lever and reduces effort. This derailleur offers next generation light effort front shifting, optimum spring tension provides feather-light downshift, new designed pull arm for more direct and easy shifting, more equal shifting effort across the range. It is a double derailleur and has a capacity of 16 teeth. It's compatible with Shimano Road shifters, has a bottom pull cable routing, max ring of 53 teeth and clamp size of 34.9 (1-3/8"). This front derailleur is lightweight with a weight of 104g and is an excellent upgrade for those looking to improve the shifting performance of their road bike.