Shimano Di2 EW-RS910 E-Tube Di2 Frame/Bar Junction Box - Black / EW-RS910H - Bar End & Frame Mount

Shimano Di2 bar-plug mount or frame mount charging point provides a simple, neat charging solution for a Di2 bike. Specification This junction A is required to connect the shifters via E-tube wires to the down tube junction wire. For either specific frame mount or handlebar end plug mount (Inner-ø 20.5-21.5 mm, Outer-ø 23.8-24.2mm). 2-port design. Battery level indicator feature. Di2 Cable NOT INCLUDED Sold Separately. Gear index setup switch to allow fine tuning via shifter buttons. Secure water resistant connectors#. Mounts for fitting into bars not included - Junction box only.