Shimano XTR DI2 FD-M9070 dual chainring front derailleur

Our opinion: Electric drivetrains are the future of mountain biking. No more gears that won't shift with the new XTR Di2! Tested and proven for over four years on the road and in cyclo-cross, the Shimano DI2 electric drivetrain is the best on the market.Part of the Shimano XTR Di2 9050 groupset, the super-powerful front derailleur is the centrepiece of the Di2 drivetrain. With the XTR M9070 Di2, changing gears requires very little effort, just a simple push of a button. The electric control ensures that you always apply the same amount of force to the front derailleur, guaranteeing reliability. The "auto-trim" function allows for automatic adjustment, so you don't even have to manually readjust the derailleur position when you change gears. Thanks to the Synchro Shift function, you can even use the left control to control both the front and rear derailleurs, and even customise your gear changes.Key features: - Very fast chainring changes with no risk of derailment, even in the most extreme conditions - No maintenance (set up your drivetrain once and forget about it) - Consistent gear changes even under full load - Automatic "auto-trim" adjustment controlled by a display - Optimised design for Di2 and gear detection - Compatible with Synchro Shift function - Increased performance in difficult conditions - All types of mounting possible - 11 speeds;br />
Front derailleur only compatible with Shimano XTR Di2 electrical components and double chainring cranksets up to 38 teeth!

More info on velotech.fr: Shimano XTR DI2: first electric MTB groupset.