• Shimano JC41 E-Tube Di2 Internal Junction Box

        • $19.99 19.99
        • RRP $30.99
        • Save 35%
    • Select Option
      Each - Ultegra 6770/Dura-Ace 9070

Shimano JC41 E-Tube Di2 Internal Junction Box

The Shimano Di2 SM-JC41 internal junction box is the Grand Central Station of the e-tube Di2 system. All of the component and battery wires meet here before running out to their respective components. All of the wires that connect to the junction box use the same connector to make assembly that much easier.


  • SM-JC41 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.
  • This junction box is only made to be mounted internally on frames specially designed for an internally routed system.

Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.

  • Delivery cost $9.99
  • Delivery toUnited States of America
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.

    More information on returns
  • Pay by Bank Transfer, PayPal or Card


  • Option: Each - Ultegra 6770/Dura-Ace 9070

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