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Shimano Di2 EW-WU111 In-Line Wireless Transmitter

ShimanoDi2 EW-WU111 In-Line Wireless Transmitter(Return to Product Page)

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(3 customer reviews)
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Nice to have iOS access to your Di2
by BrooklynArchitect
Competitive Racer
Brooklyn, NY

It took some work to get everything set up (shoutout to my mechanic The Rover), but once he made the battery upgrade, updating the firmware was a snap.

Honestly, I was considering experimenting with the newer possible settings afforded the Di2 user for more intuitive shifting, but the instructions on the e-Tube project app are so opaque I don't even want to try it. So it's helpful for keeping the firmware up to date, though this doesn't really change my day to day riding experience, so it's a bit of an unnecessary toy!

Reviewed 5/17/2018
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Nice to have if you need to access DI2 on your phone
by DLinLV
Competitive Racer
Las Vegas

I setup my DI2 on my PC, but you can do it on your phone now with this and the new battery. I noticed battery life has gone down a lot so I am now only planning to use this if I have any adjustments to do on the ride. Nice thing is if you have issues with the DI2 on a ride, you can access the system with your phone to make adjustments if needed, or get out of limp home mode. But, its not an essential piece of gear for DI2, in my view, so 4 stars.

Reviewed 5/12/2017
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Cheapest way to get wireless capability for Di2
by  Brian Kesselnan
Portland

Super small and light, works great inside my carbon frame. Not sure on metal frames. You will need the new battery and a short E-TUBE cable, but the wireless app is great as is the ability for the Di2 to talk to my Garmin.

Reviewed 8/31/2017
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