Electronic signals between the shifter and the derailleur(s) give mountain bikers an instant connection to a wide range of gears… making it easier to react and stay in the flow of the trail. React instantly to sudden changes on the trail quickly and efficiently allowing you to save energy or find even more speed. With Di2 you can pre-program the system to shift through your whole cassette by simply holding down the shifter. Or if you prefer a traditional approach, tap away every single shift. The decision is yours.
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There is no exposed mechanical cable and housing to add friction, be susceptible to contamination or wear out. With Di2’s electronic signals and its sealed system, Shifts are powerful, dependable, and instantaneous every single time over a long period of time. This is what we call Performance Durability.