Electric Wire

The Shimano EW-SD50 electric wire connects the individual parts of the Di2 system to each other. They're available in a bunch of different sizes. You'll need about 6 of them, depending on your specific setup and frame size. The generally available sizes are:

  • 150mm
  • 250mm
  • 300mm
  • 350mm
  • 400mm
  • 500mm
  • 550mm
  • 600mm
  • 650mm
  • 700mm
  • 950mm
  • 1000mm
  • 1200mm
  • 1400mm
  • 1600mm (e-bike only)

Details & specifications

Shimano model codeEW-SD50
Shimano model nameElectric Wire
Weight5 g
SeriesUltegra 6770, Ultegra 6780, Ultegra R8000, DURA-ACE 9070, DURA-ACE R9150
View on Amazon (new tab)  |  eBay (new tab) Chain Reaction Cycles (new tab)

Shopping links

Are you looking to upgrade your bike using this component? We've added shoppings links to this component's Amazon and eBay pages. Click the images below to view the Amazon product page or eBay search results.

Click to view on Amazon
Click to search on eBay
Click to search on Chain Reaction Cycles

Use the Shimano tool

We recommend you use the official Shimano cable plug tool for Di2 to correctly plug in your Di2 wires. You should feel and hear a click (or 'pop') when connecting your components.

TL-EW02 Cable Plug Tool for Di2

Connecting the front derailleur and the (external) SM-JC40 junction B


Additional Images

EW-SD50 and TL-EW02