Wire kit with control unit for Shimano Dura Ace and Ultegra Di2. The control unit offers a battery charge indicator and a rear derailleur adjustment mode. This wire kit is equipped with connectors for the left and right STI. With additional EW-SD50 cables it connects the Di2 STIs with the junction box SM-JC40 or SM-JC41 and thereby with the front and rear derrailleur and the battery. Easy plug and play system to connect the cables.
In order to ensure proper functioning of the electronic Di2 drive system, all components require the same firmware version. The optional diagnostic device allows for reading out or updating the firmware version. An operation of components with different firmware versions may cause a malfunction or loss of function.
Included in delivery: wire kit with control unit
