Shimano Di2 Bottom Bracket Junction Box Internal JC41


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Article number: MS08129
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  • SM-JC41 E-tube cable junction for internal wire routing
  • Junction is required for connection of rear mech, front mech, battery, and cable to battery indicator junction box
  • To be positioned neatly inside frame tubing when connected
  • Cables sold separately
  • Reliable and secure water resistant connectors
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