Shimano EW RS910 Di2 2-Port Internal Frame Junction Box for Drop Handlebar - Compatible with Shimano Di2 E-Tube Charging | Ideal for Road Bikes & Electric Bike Conversions

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Shimano Di2 Frame Junction Box

Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear derailleur, cockpit junction box and battery mount
All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/

MPN: IEWRS910

UPC: 689228890879