The SHIMANO DURA-ACE R9150 DI2 front derailleur delivers quick and smooth front shifting even under high pedaling torque. It has programmed chain guide trim settings and can be used in full or semi SHIMANO SYNCHRONIZED SHIFT modes.
Ergonomic shifting operation without stress
SHIMANO synchronized shift
Race endurance for less damage in crash
Quick and smooth front shifting "under" high pedaling torque