SHIMANO Dura-Ace Di2 SM-EW90-A junction
This junction is fixed underneath the stem and represents the interface between the shift/brake lever combination ST-9070/6870 and the SM-JC40/SM-J41 junction fixed underneath the bottom bracket shell (fig.1, additional cable EW-SD50 is required for connection, item no. 1772052). If shift levers SW-9071, SW-R671 or SW-R610 are used, their connections are directly joined to the ST-9070/6870 socket. The junction also has an indicator showing the battery's state of charge, with 4 modes. If the indicator lights up green, then the battery is fully charged. If it flashes green, the battery still has 50% of its charge. If it lights up red, then the battery still has 25% of its charge. If it flashes red, the battery is empty. An integrated control button permits precise adjustment of the front and rear derailleurs.
· suitable for a stem circumference of approx. 95-175 mm
Note! If SW-R600 is used at the same time, in addition to SW-9071 or SW- R671, then junction SM-EW90-B (item no. 1873917) will be required.
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