With Di2 you can completely control your downshift - whether you want to shift a single gear at a time, in a burst or through the entire range in one stroke. With E-Tube you can also control how it shifts, how many gears you shift in a burst or how fast it moves through the gears.
Take complete control of how your shifters work. You have the freedom to map any function to any button - whether you want to move your rear derailleur to the left-hand shifter switch the up and down gears, it is up to you. Any function can be moved to any button on the shifters.
Stay up-to-date with the latest options and features by using E-Tube to download the latest firmware for your system. With our commitment to backwards compatibility, you can add features released after you bought your system. This is compatible with Ultegra 6770 and Dura-Ace 9070 onwards on the road, STEPS e-bike products and all mountain bike Di2 systems.