Add Style to your bike! Made of 100% lightweight 6061 T6 aluminium. Incl. spacers, top cap & bolts.
Using the external bracket SM-BTC1, the internal battery SM-BTR2 be attached externally. The bracket provides a low profile design. Junction B function with six E-tube wiring ports.
Battery bracket for Shimano Di2 battery SM-BTR1. Available in different versions, according to frame type and cable routing. Enables the Bluetooth communication.
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