Shimano Ultegra Di2 Junction Box

Shimano Ultegra Di2 Junction Box

Shimano Ultegra Di2 Junction Box
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As an improvement over the Dura-Ace Di2 setup, the Ultegra Di2 group uses a junction box to simplify the wiring, giving you a cleaner look with easier setup. The junction box mounts under your bottom bracket shell (for external wiring) and connects the wires coming from the derailleurs, levers and battery.

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MSRP: $29.99
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