Shimano Di2 EW-RS910

The junction box EW-RS910 by Shimano is a Di2 connection point, also called junction A, which is installed internally. You can choose between the handlebar tube and the frame or down tube as mounting positions. The junction has two E-Tube connections and one charging connection. It determines data such as the current gear position and the battery charge level. The firmware can be updated via the E-Tube platform.

Features

• The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts
• 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
• 2-port design
• Battery level indicator feature
• E-tube EW-SD50 wires not included
• Additional charging point when using internal battery
• Gear index setup switch to allow fine tuning via shifter buttons
• Reliable and secure water resistant connectors

Compatibility
– Dura Ace Di2 R9150
– Dura Ace Di2 9070
– Ultegra Di2 6870