Shimano E-Tube Di2 External Junction B Box Color:Black 30mm spindle for Easton Cinch

SKU: 50483506660

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Shimano E-Tube Di2 External Junction B Box Color:Black 30mm spindle for Easton CinchShimano E Tube Di2 External Junction B Box The Shimano Di2 SM JC40 is designed to connect SD50 E tube wires along four points; front derailleur, rear derailleur, cockpit junction and battery mount. The B Box is used to split the main wire from Junction A to the front and rear derailleurs. It can also be used to connect a seatpost mounted battery to the system. Specifically designed for externally mounted systems and mounts underneath bottom bracket

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