The XTR Di2 M9050 Down Swing Front Derailleur features easy shifting at the press of a button, improved gear tracking and reliable gear changes even under load. It is meant to be used with a triple crankset. Want to run 2x? You'll need FD-M9070 instead.
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It also supports Shimano Synchronized Shift and computer controlled auto trim. Note that you need a display in order for synchronized shift to function with MTB derailleurs.
I recommend either the SC-MT800 display, or its XTR equivalent, the SC-M9051.
Indexing Di2 rear derailleurs is done though micro-adjustment. The MTB Di2 rear derailleur process is slightly different from that of road RDs. Read how to set up your MTB rear derailleur and stop that chain rubbing noise.
Did you know that you can mix Di2 components from different series and categories? Mixing derailleurs is not recommended, but anything else is fair game!
