Shimano is to release the first electronic groupset for mountain biking, XTR Di2. XTR Di2 comes in addition to the previously announced XTR M9000 mechanical groupset. XTR Di2 also comes with a new programmable shifting layout called Synchro Shift. XTR Di2 offers a clean appearance on the bike and low maintenance thanks to the use of electrical wires.
One of the main advantages of electronic shifting is the programmability of the system. With new XTR Di2 it is possible to have the best shifting setup for every individual riding style. XTR Di2 works on the same E-tube platform as Shimano’s current road Di2 groupsets. The E-tube platform offers full programmability of the groupset and transmits interactive signals and power supply to each individual part by ‘plug & play’ connection. E-tube makes it possible to customise a shifting system by changing the function of the shift buttons. For example, it is possible to change the control of the front derailleur to the right switch and/or the control of your rear derailleur to the left switch. Multi shifting is also possible with XTR Di2 and is fully programmable. Multi shift can be engaged by pressing and holding the shift switch. Not only is the speed of the shift customisable but also the number of shifts, whether you want to shift up to a maximum of two sprockets with a single hold, or all the way through the cassette. Working with E-Tube electric wires also means no rust and no cable stretch while ensuring low maintenance and consistent shifting compared to a traditional mechanical cable-operated system.
With Synchro Shift enabled, it is possible to control both derailleurs with just one shifter. The front derailleur reads the position of the rear derailleur and automatically operates the front shift to position the gears in the most efficient gear and best chain line so the rider never has to worry about front shifting and correction shifts again.
The Di2 front derailleur is twice as powerful as the current M980 front derailleur and provides reliable, fast and smooth gear changes, even under heavy load. Shifting becomes effortless regardless of the terrain with a simple the push of a button, says Shimano.
The ‘brain’ of the XTR Di2 system is the digital display. This display indicates the battery level, gear position, shift mode (manual or Synchro) and the suspension mode. Using a button on the display it is also possible to change the shift mode to either manual or choose one of the two Synchro Shift maps, even while riding.