With Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear.
This climbing twin button satellite shift switch is used to operate the rear derailleur whilst your hands are on the top of the bars, one button up, one button down.
Compatible with a range of Shimano E-tube Di2 shifters, this simple to install right hand shifting switch enables you to quickly change your rear gears without changing your hand position on the bars. Ideal for race use, it requires minimal effort to operate so you can concentrate all your energy on the road ahead.