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Di2 Inline Wireless Unit - EW-WU111

2.857142857142857 out of 5 stars
7 Reviews
Current price: $90.24 Original price: $94.99
5% off
Color:One Color



Why We Like The Di2 Inline Wireless Unit

The Shimano Di2 EW-WU111 Inline Wireless Unit boosts the system's ease of use by adding Bluetooth connectivity in addition to carrying over ANT+ to pair with an even wider range of devices. Paired with Shimano's E-Tube Project Wireless app, the Inline Wireless Unit lets you customize your drivetrain and update firmware right from your smartphone or other Bluetooth equipped device.

This diminutive component is like a black box for your bike, feeding data from your derailleurs to your phone or tablet so you can monitor drivetrain metrics like gearing and battery life. The latter is especially useful, as it's looking to be the most effective way the industry has come up with to ensure you won't unexpectedly run out of juice during the trip home. It also measures general riding metrics, so you're not sacrificing the functionality of a normal computer by adding drivetrain info to your cockpit. Your pedal revolutions will also be televised.

The Di2 EW-WUlll Inline Wireless Unit is compatible with Shimano's E-tube Di2 systems. In addition to it Bluetooth connectivity, it transmits via ANT+ to Shimano's own PRO computer, as well as other ANT+ equipped head units.


  • Shimano's wireless unit gets upgraded with Bluetooth connectivity
  • Enables use and connectivity of ANT+ private and Bluetooth LE
  • Wirelessly customize your drivetrain with the E-Tube Project Wireless app
  • Older firmware version installed that can be updated via the app
  • Item #SHI00EX
Shimano Di2 E-Tube systems, Shimano DN110 battery
Claimed Weight
Manufacturer Warranty
2 years

Overall Rating

3 based on 7 ratings

Review Summary

1 Stars - 3 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 1 reviews
5 Stars - 2 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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1 out of 5 stars

July 20, 2024

Killed my system

I decided I would update the firmware as recommended before a ride, and now I just dropped the bike off at a shop because the entire system is bricked. No power, no lights, no shifting, really wish I would’ve gone with ETAP

5 out of 5 stars

April 28, 2024

Nice upgrade for an older DI2 System

I've used it several times

My older DI2 battery didn’t support the wireless unit so when it came time for an upgrade, I added the EW-WU111 and a short cable. Installation was simple and configuring my Garmin Edge to recognize the wireless unit was straightforward. Nice to have battery status onscreen and nerds will like knowing their gear ratios.

5 out of 5 stars

January 20, 2023

No problems for me

I've put it through the wringer

I bought this with trepidation because of the other reviews but had no real issues. Yes, Make sure to update everything before you start Then choose it at a sensor on your wahoo or whatever and you'll be able to see your gears, know how much charge you have left and switch screens with the buttons on top of your hoods. Worth $70? Your call.

Lucas M
4 out of 5 stars

November 25, 2022

Handy Tool

I've put it through the wringer

I'll start by saying I've had some of the same frustrations as other reviewers, but I've found some tips to help make things go well. First, ensure your phone is charged and that no further updates to it will happen while using the E-Tube software. Next, ensure that the software is up to date before any firmware updates. And lastly, don't be in a rush, be patient while using the software. Sometimes it can take a while and appear to stop working when it is actually thinking in the background. If you take that care you should be good. FWIW I am using an Android phone and that may help (everything Apple seems to think it is smarter than everything else and tries to control the situation and tends to muck things up). All this said and done, the hardware works and can make updating firmware on your drivetrain pretty easy.

George J
3 out of 5 stars

November 15, 2022

Prepare for brain damage

I've used it several times

Physically installing this unit took all of 3 min (and another Shimano cable not included). Getting the unit connected to the Shimano E-Tube app took 2 hours, multiple devices, and a lot of swearing. Connected to my iPhone on first try but would not run firmware update. Installed E-Tube app on PC and updated firmware. Once updated, unit would not connect to iPhone no matter what I did. Ultimately ran through several additional Apple devices before my daughter’s iPad finally connected and finished setup. It was mind numbing and I nearly gave up. The unit now works great. I really like seeing gears on my Wahoo screen and controlling the pages/zoom. Knocked stars off for terrible setup but once setup completed, this works as advertised.

kol101522859 k
1 out of 5 stars

January 25, 2022


I've used it several times

The Bluetooth connection was interrupted during a update, and now it's completely dead.

ricky l
1 out of 5 stars

May 31, 2021

Risky to use

I've used it once or twice and have initial impressions

The problem with this unit is that if anything goes wrong while you're using it, it can lock up your system to the point that you can't shift and you can't recover without the help of a bike shop - at least officially. Unofficially, there's a messy hack you can do (but I won't go into that). My experience was that my IPhone went into power-save mode - as it often does - during a firmware update, and it totally locked everything up. My recommendation is to download the e-tube software to your PC, and do all of your updates and customizations that way. There's much less chance of a disconnect, and it's much safer.

Thomas O