Shimano Di2 Junction A EW-RS910 InternalThe new ShimanoEW RS910 Bar End or Frame Mounted Internal A Junction Charging Port is part of the Dura Ace 9050 Di2 release. This new A Junction has finally given a cleaner option for Di2 bike cockpits by removing the A junction from beneath the stem and moving it inside the handlebar end or inside the frame on bikes with a compatible mounting point in their frame like the compatible versions of the Trek Madone and Pinarello Dogma.
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