The FD-R9250 is Shimano's first 12 speed Di2 Front Derailleur, to be used with the semi-wireless R9250 groupset.
It works with the BT-DN300 battery and EW-SD300 Electric Wire.
Twelve-speed Di2 components are wireless, so what is a wire doing here? The new Di2 system is only semi-wireless, meaning that the derailleurs are still plugged into the battery, but the shifters send their shift commands wirelessly.
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This 12-speed front derailleur is meant to be used with a 12-speed road rear derailleur. It will not work with 11-speed derailleurs or MTB derailleurs.
Want to know more about 11-speed and 12-speed compatibility? Read my guide on 12-speed compatibility.
What is a rear derailleur's total capacity, really? Why is there a top sprocket minimum? And what about front derailleurs? Chain line, total capacity, Top gear teeth? This page explains all of those, and more.
