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

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Shimano Di2 External Battery Mounts

Features:
  • 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 http://e-tubeproject.shimano.com/

This product was added to our catalog on April 25, 2018