This battery mount is compatible with both internal and external wiring. For bike with a Di2 specific battery mount. Shimano part number ISMBMR2S1.
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This is the internal version battery mount for the Di2 Groupset battery. Available in three options Long External, Long Internal, and Short, the
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This is the internal version battery mount for the Di2 Groupset battery. Available in three options Long External, Long Internal, and Short, the
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