Building an 11-speed Di2 bike – cable routing, lengths and more
Selected the components for your bike build? Read how to determine cable lengths and wiring setups.. and then build your bike.
Electric Wire / E-Tube cable
Non-series components EW-SD50
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
Affiliate Links
Using the affiliate links to purchase anything earns the site a small commission, at no additional cost to you.
That 1600mm wire is meant to be used on E-Bikes only, but I haven't seen it fail on road bikes myself. If you're thinking of using this on a road bike - you probably can.
You can connect EW-SD50 wires to the next generation EW-SD300 E-Tube wires using the EW-AD305 adapter. This is good news, because that means you can use all of your older components with future Di2 series.
An EW-SD50 wire's diameter is 2mm. However, the plug - or connector - itself measures 4.5 - 5mm in diameter. This means that the plug doesn't fit through frame internal cable stops found on many older frames. This is something to keep in mind when converting older bikes to (wired) Di2.
Specifications
- Model code: EW-SD50
- Series: Non-series components (NON)
- Weight: 12g
- Speeds: 10 / 11 / 12
- Wire length: 150mm / 250mm / 300mm / 350mm / 400mm / 500mm / 550mm / 600mm / 650mm / 700mm / 950mm / 1000mm / 1200mm / 1400mm / 1600mm
- Connector: SD50
Related components
View all componentsRelated pages
Di2 Installation Guides
Installing Di2 components may seem difficult and hard to get right, but it is really quite simple. This page lists all the installation guides on this site.
More images