Shimano Dura-Ace Di2 5 Port TT Handlebar Junction Box

Shimano Dura-Ace Di2 5 Port TT Handlebar Junction Box The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates; corrosion and stretching but provides effortless gear shifts. The Shimano Dura-Ace Di2 5 Port TT Handlebar Junction Box connects the shifters via E-tube wires to the down tube junction wire. This is a five-port design with a battery level indicator feature so you know when your system needs charging up. Please note; the stem mounting strap is not included.