The SHIMANO Di2 EW-RS910 2-port junction box is a new component of the electronic road groupsets, aimed in particular at better integrating the connectivity...
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✓Compatibility with Di2 Dura-Ace (R9150, 9070) and Ultegra 6870 systems.
Description
The SHIMANO Di2 EW-RS910 2-port junction box is a new component of the electronic road groupsets, aimed in particular at better integrating the connectivity elements on the cockpit.
Its installation, which can be done at a bar end plug or on the down tube, requires particular attention, as it demands specific compatibility with your handlebar — to route the cables — or your frame, which must feature an opening to accommodate it. In this new configuration, it features two ports and must be connected with the Y-cable EW-JC130.
While it changes shape and design to better integrate, this junction box remains the central unit of the Di2 electronic system, its brain, which sends gear shift commands to the derailleurs. It pairs with the E-Tube Project app on your smartphone via Bluetooth.
It allows the battery to be charged and its charge level to be checked via the two integrated LEDs. Thanks to its button, it is possible to re-pair the rear derailleur after the activation of its protective function following an impact. You can also change the operating mode using the same button.
Technical information
Installation on the down tube or at a bar end plug;
Two LEDs including a charge level indicator;
Charging port for the battery;
2 connection ports;
Functions: changing the gear shifting mode, reactivating the rear derailleur protection function...
Compatible cables: EW-JC130, EW-SD50;
Compatibility: Di2 Ultegra 6870, Dura-Ace 9070, R9150 drivetrains;
Weight (manufacturer): 11 g.
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Pricing information
*Supplier recommended retail price in February 2024
Overall rating: 5.0 / 5 from 1 reviews.
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connection box
"easy to install on the end of the handlebars and practical for charging the di2".