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ShimanoBM-DN100 Di2 Battery Mount
Item # SHI00CLPast Season Colors
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October 25, 2016
What's the difference between this and the mount I already have for my ultegra di2 6770 gears? It looks exactly the same? Is just the outward appearance the same?
April 22, 2017
According to BikeRadar, the BM-DN100 contains extra circuitry to enable the Synchro Shifting feature. This mount, along with a firmware update to all your existing Di2 components, allows you to upgrade existing 11-speed Di2. http://www.bikeradar.com/road/news/article/shimano-synchro-shifting-ultegra-6870-dura-ace-9070-49717/