Shimano BMR1 and BRM2 Di2 External Battery Mount Base (Unit A)

Shimano BMR1 and BRM2 Di2 External Battery Mount Base Description: The Shimano BMR1 and BRM2 Di2 External Battery Mount Base is designed to provide an attachment point for Di2 external batteries. This mount will attach to the frame around the waterbottle bosses, and is slim enough to fit underneath a water bottle cage so the water bottle bosses can still be used for hydration or other water bottle boss mounted accessories. Features: Includes the bracket, bolts, and washers for attaching to the frame Base end, batteries, and other Di2 accessories sold separately