Shimano Ultegra Di2 Junction Box Parts Electronic Shifting Parts |
Shimano Ultegra Di2 Junction Box. As an improvement over the Dura-Ace Di2 setup, the Ultegra Di2 group uses a junction box to simplify the wiring, giving you a cleaner look with easier setup. The junction box mounts under your bottom bracket shell (for external wiring) and connects the wires coming from the derailleurs, levers and battery.
Price: 24.99 |