EW-SD50 wires are required to connect the junction (either SM-JC40 external or SM-JC41 internal to the rear mech, front mech, battery and to the handlebar battery indicator junction box
Especially small connectors, only 5.1mm in diametre
Highly flexible cable
Cable can be ordered in different lengths
Waterproof shealth
Reliable and secure water resistant connectors
Cable ties not included
E-Tube wires are compatible with 6770 Ultegra 10spd Di2, 6870 Ultegra 11spd Di2, 9070 Dura Ace 11spd Di2, plus all Shimano MTB Di2 and STEPS systems.
Shimano’s e-tube technology; e-tube is a two-prong system and is NOT cross compatible with Dura-Ace 7970 Di2 wiring