Shimano Di2 e Steps EW-JC304 junction

Shimano Di2 EW-JC304 cable fitting designed to fit into the frame's internal wiring harnesses, allowing wireless configuration and connectivity via E-Tube.

Features

• 4-port internal junction for EW-SD300.
• Length: 36 mm.
• Water resistant.

Technology

E-TUBE
E-TUBE is Shimano's original mobile application that allows you to customise your bike, update firmware and maintain your bike via a wireless connection to the bike.
Customisable settings not while riding.