Description The Ultegra Di2 SM-BMR1 Battery Mount secures the SM-BTR1 Battery to your frame.
This integral components is available in two lengths, Long and Short. The Long version is compatible with most bikes, it's designed to attach to the seat tube or down tube via a single water bottle boss. The Long mount comes in internal or external variations depending on which cable routing your bike uses.
The Short version is designed for Di2-specific frames that have a built-in battery mount (a separate attachment from the water bottle bosses). The Short mount can be used with either internal or external routed cables.
Note: The Ultegra Di2 SM-BTR1 Battery and electronic wire ares sold separately.
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