Shimano ultegra 6800 2x11sp band on front mechwith a revised actuation ratio in combination with the ultegra 6800 shifter and polymer coated cables the new ultegra front derailleur delivers both a shorter stroke at the lever and reduced effortnext generation light effort front shifting optimum spring tension provides feather light down shiftfeatures completely redesigned ultegra front derailleur for use with ultegra st6800 shifters only for optimum shifting performance long pull arm for light