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BMR2S1 Di2 Small External Battery Mount (CY9074)


This item is currently unavailable.

  • Currently, we do not ship because mail order might interfere with giving our instore customers the best possible customer service. Sorry!
Shimano Di2 External Battery Mounts
  • All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
  • Use Di2 system checker to update component firmware from
  • 10mm mounting bolts
  • Compatible with both internal and external wiring kits
  • For use on frames that have a specific Di2 battery mounting location on the chainstay or down tube