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Shimano junction EW-RS910 for Di2 - junction A for internal mounting
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.
Information regarding the return of batteries and electrical equipment:
Learn more about returning and recycling used batteries and electronic deviceshere.
Mount: frame or handlebar (inner-ø 20.5-21.5 mm, outer-ø 23.8-24.2 mm; min. 40 mm insertion depth)
Number of E-Tube Ports: 2
Number of E-Tube Connections: 0
Number of Sprinter Shifter Ports: 0
Number of Sprinter Shifter Connections: 0
Number of Charging Ports: 1
Compatible Cables: E-Tube
Compatible Cables: EW-SD50, EW-JC130*
Functions: current gear, Di2 battery status, adjust mode display, E-Tube connection, Synchro Shift
* EW-JC130 Y-cable is needed when using two STIs, but not when using Synchro-Shift.
- Dura Ace Di2 R9150
- Ultegra Di2 R8050
- GRX Di2 RX815
- E-Tube project ensures firmware updates
E-Tube is a system platform for the Di2 concept (Digital Integrated Intelligence). E-Tube transmits interactive signals and supplies all electronic parts with power via " Plug & Play" connections. E-Tube is resistant to corrosion, expansion and frost and ensures low maintenance. It offers optimal flexibility for your bike. With E-Tube Project you can customise the settings of electronic components and update the firmware via Windows PC, tablet or smartphone. It provides quick and easy access to information on electronic components and provides an instant overview of system status.
Manufacturer Part Number:
- 1 x Shimano Di2 EW-RS910 junction box
- black/internal: 11 g