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Shimano EW-WU111 Wireless Unit

Item #: EL196E04
In Stock
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Shimano EW-WU111 Wireless Unit

Shimano EW-WU111 Wireless Unit

Shimano's Wireless unit is a small transmitter that allows pairing of your Di2 system to Bluetooth and ANT+ enabled devices. It unlocks the full potential of your Di2 system, allowing it to wirelessly link with your phone, tablet or compatible cycling computer. Paired with a head unit or cycling computer, the EW-WU111 will wirelessly relay critical information about your Di2 shifting system. Gear position, battery life and more will be available at a glance and keeping you in the know when it come to your electronic shift system. Paired with a Bluetooth-ready phone or tablet, you will be able to reprogram and perform system checks of your Di2 system on the fly with Shimano's E-Tube Project App, available for Android and Apple devices. We recommend the EW-WU111 to anyone looking to unlock the full potential of the Shimano Di2 system.


  • E-tube Di2 D-FLY inline data transmission wireless unit
  • Internal chip enables system wireless functionality of Bluetooth components and wireless connection to E-Tube Project mobile software 
  • Allows information to be sent wirelessly via ANT+ private network to compatible cycle computers
  • Information can be displayed and recorded about gear position and ratio, derailleur adjustment and Di2 battery level
  • Clean integration and installation with E-tube system
  • The Shimano TL-EW02 Di2 Wire Plug tool is required for connecting or removing E-tube Di2 wires
  • Average weight 5 grams
  • Requires updated BT-DN110 internal seatpost battery or BM-DN100 External Battery Mount for proper Bluetooth functionality
4.8 / 5.0
9 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
September 12, 2017
1 month ago
Hey, there's an APP for that!
Synchronized shifting cones to Ultegra Di2! And Jenson USA was the first to offer it to me! This wireless unit, small enough to fit inline INSIDE my downtube, allows for Bluetooth connection to my iPhone, so that I can update firmware and customize the Di2 setup on my tri bike. (Also requires the right battery or external battery holder.). I'd been waiting for moths, and Jenson USA was the first to have it in stock.
March 31, 2017
8 months ago
Poulsbo, WA
Easy to use. Basically plug and play. Bluetooths easily to my Garmin 1000 and Shimano E Tube app on iPhone.
August 31, 2017
1 month ago
Shimano wireless unit
Purchased the Shimano unit to complete my Di2 Bluetooth connectivity to allow wireless tuning of the system. Works as expected and well.
August 16, 2017
2 months ago
North Carolina
Works perfectly and love the wireless Bluetooth capability.
May 1, 2017
8 months ago
As advertised
What else can you say - does exactly what it says it does. Adds ANT+ and blutooth support to my Di2 system. It suggests being plugged into the hub, but I plugged directly into the battery which then goes to a hub - no issues with this setup at all.
April 3, 2017
Simple and effective
Small, lightweight and easy to fit. Does exactly what it's supposed to do. Instructions are a little vague.
March 25, 2017
7 months ago
A nice pairing with the Garmin 1000 GPS
This unit is simple to install and allows battery status and gear positions to be added the information screens of cyclometers and GPSs.
April 10, 2017
6 months ago
Winthrop, WA
The WU111 is optional if you have Di2. It adds two capabilities -- first if you have this transceiver you can adjust your Di2 settings and upgrade firmware wirelessly with an iPad rather than just wired with a PC. Second, it broadcasts certain information including most importantly your current gear to bike computers that are capability of displaying it (I use a Wahoo Elemnt Bolt). I like that both on the road and on rollers.
June 5, 2017
4 months ago
New York

Q & A

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Browse 10 questions Browse 10 questions and 25 answers
Is it compatible with Dura ace 9070?
Christef on Feb 17, 2017
BEST ANSWER: For internal batteries, you will only get Bluetooth and ANT+ connectivity with the newer BT-DN110 battery. It will not work with the older SM-BTR2 battery.
Besides this unit, what else do you need to install?
A shopper on Feb 9, 2017
BEST ANSWER: Because the unit has two female ports you will need an additional etube wire to install it between the junction A box and the junction B box. I bought a 150mm etube for this purpose.
Is this confirmed to be shipping by Jan 24?
David L on Jan 10, 2017
BEST ANSWER: Hello David,
The arrival date is based off of a date supplied to us by the manufacturer. Usually, these are fairly accurate, but occasionally things beyond our control can hold up items being shipped to us. We work fervently to try to keep these dates accurate and updated with any changes. I hope that helps.
Keep Pedaling!
I bougth my ultegra di2 6870 a year ago but i donĀ“t know which battery does it came with, how can i know witch battery do i have with out taking the seatpost off?
CESAR O on Jul 28, 2017
BEST ANSWER: Chances are you have the previous seat post battery SM-BTR2. (I would check the seat post battery to be sure). In order for the EW-WU111 to work, you will need the new BT-DN100 seat post battery and a short 150 or 300mm DI2 cable. I mounted my EW-WU111 inside the seat post tube but it can be mounted externally as well. Besides the bluetooth connectivity, the new battery enables sychro or semi-sychro shifting via a software upgrade from Shimano. I use the iPad/iPhone Shimano eTube app to make software changes via the EW-WU111 bluetooth unit. Also have connectivity to my Garmin 820 for realtime battery status and gear position.
Can this be installed inside the frame and still work?
Mark R on Mar 8, 2017
BEST ANSWER: Based upon the assumption that the BLE signal isn't blocked by the bike frame, I can not see that this wouldn't work. FWIW, I have mine on the outside as it is supplied with a nice little couple of clips that allow it to be easily attached to the brake cable. Note that to use this device you need a new battery or battery mount, depending upon how new your bike/groupset is.

Excerpt from Carlton Bale's "all you need to know about Di2 site" as follows...

Synchronized Shifting and Bluetooth Wireless Units can be added to all E-tube Ultegra and Dura-Ace systems but the battery has to be upgraded to the BT-DN110 Internal Battery or BM-DN100 External Battery Mount. To add Bluetooth capability, a EW-WU101 or EW-WU111 inline transmitter must be added to road bikes and for mountain bikes, the SC-MT800 or SC-M9051 display/transmitter unit must be added.
Is there any functionality difference between the WU111 and the WU101?
Gord W on Mar 16, 2017
BEST ANSWER: You need the BT-DN110 Battery can't use the SM-BTr2. Enables the use of Bluetooth also to program. Plus I hide mine in the seatpost.
How can it plug in time trial bike ( where all wires are internal)?
Stanislav P on Feb 27, 2017
BEST ANSWER: I plugged my tt shifters into the wireless unit and then ran another e-tube wire to the junction A. I have everything coiled inside an aero bar extension with a single e-tube wire coming out the cable exit.
Will this work wit a Shimano Ultegra 6870 with external battery?
Oscar on Jan 31, 2017
BEST ANSWER: Yes, this device works with Ultegra 6870 with either the internal (bt-dn110) or external (bm-dn110) battery. Please see the e-tube compatibility chart at
I have the new internal battery in my seat post. Can I connect the new EW-WU111 between the battery and the junction box or must it be connected between the junction box A and junction box B?
holsen on Apr 2, 2017
BEST ANSWER: The Di2 system doesn't care where this is, so long as it is connected somewhere in the system. That's the beauty of Di2! In my case I just daisy chained it in between where the seatpost battery connects to the Junction B and it works fine. just use a short wire to attach it in somewhere.
If I have the older BTR-2 battery, will the WU-111 unit not work at all or will it simply not display the remaining battery life?
Richard C on Mar 17, 2017
BEST ANSWER: You will need the new battery BT-DN110 for this to work. It will not work with any other Di2 battery.

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.