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Shimano Non-Series Di2 SM-EW90-B E-tube Di2 Junction-A; 5 port

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  • Detail
    • The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts
    • This junction A is required to connect the shifters via E-tube wires to the down tube junction wire
    • 3-port design, one for down tube wire to bottom bracket junction, two for shifter connection
    • Battery level indicator feature
    • E-tube EW-SD50 wires not included
    • Additional charging point when using internal battery
    • Gear index setup switch to allow fine tuning via shifter buttons
    • Reliable and secure water resistant connectors
    • Stem mounting strap included
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