Est. 1982

Shimano EW-SD50 E-tube System Di2 Electric Wire


E-Tube Di2 wires form the connections of a Di2 system. Shimano's E-tube technology, is a weather-sealed system that allows multi-compatibility and expandability of the Di2 system.

Connectors easily click securely into place (always use the approved Di2 wiring Tool) and allow quick install of Di2 e-Tube components.


Please Note:- E-tube is a two prong system and is NOT cross compatible with older Dura-Ace 7970 Di2 wiring.


  • All e-Tube wires may be used for internal or external applications
  • Compatible with:-
  • Shimano Dura-Ace 9070, R9170 and R9150
  • Ultegra 6770 and 6870
  • XTR M9050
  • XT M8050
  • Alfine S705 and S505