Shimano Dura Ace Di2 Junction B


Representing the absolute pinnacle of cycling performance, Shimano is responsible for decades of masterfully crafted, podium worthy components. With the introduction of Dura Ace 9070 Di2, Shimano has put 11 speed shift accuracy at your fingertips, with arguably the finest groupset available. By eliminating clumsy cables and housing from your groupset, Shimano is able to ensure precise and accurate shifting at the mere touch of a button. The Junction B Box connects the E-Tube to the battery, as well as carry the shifter signals to the front and rear derailleur.

Di2 Accessories