Shimano Di2 SM-BMR1 Base A Unit
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Shimano Di2 SM-BMR1 Base A Unit Info
The Shimano Di2 SM-BMR1 Base A Unit is a mounting component designed to secure Shimano Di2 batteries within the frame, keeping your electronic groupset tidy and reliably positioned. Built as part of Shimano's Di2 ecosystem, it provides a stable interface between the battery and the internal routing system of compatible frames. If you're building up or servicing a Di2-equipped bike, this is the piece that holds it all together behind the scenes.
The SM-BMR1 Base A Unit is intended for internal battery mounting, working in conjunction with other Di2 battery mount hardware to accommodate different frame configurations. It's a straightforward, functional component — not glamorous, but the kind of part you notice immediately when it's missing.
Shimano Di2 SM-BMR1 Base A Unit Specs at a Glance
- Manufacturer: Shimano
- Compatibility: Shimano Di2 electronic groupset systems
- Function: Internal Di2 battery mounting base unit
- Component type: Battery mount — Base A Unit
- SKU: Y7F398020
