Inline D-Fly / Wireless Unit

Inline D-Fly / Wireless Unit

Non-series components EW-WU111

The EW-WU111 D-fly allows your Di2 system to communicate wirelessly with your head unit and smartphone or tablet. It'll let you display currently selected gears, allows you to switch head unit screens, update firmware, change settings and more.

It is generally placed on road bikes, positioned somewhere outside the frame, or in your handlebars. Have a look at the attached user manual for examples on where to place this unit on your bike.

While Shimano officially do not recommend placing this inside the frame or handlebars, in most cases that'll work just fine. I personally have never heard of anyone complaning about signal strength due to it being installed inside the frame.

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