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Shimano SM-BTC1 Battery Case for SM-BTR2

The SM-BTC1 mounts Shimano's internal SM-BTR2 battery externally on a bike's water bottle bosses and also acts as a Junction B or lower junction box, connecting wires from the shifters to the battery and derailleur. Its six E-Tube wiring ports with a cable organizer allow for system expansion.


  • Mounts SM-BTR2 battery externally next to bottle cage
  • Functions as a lower B junction
  • Mounts to any frame with a water bottle mount
  • Six E-Tube wiring ports with cable organizer
Sale Price
Reg Price $90.50


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