Shimano
EW-WU111B Di2 Wireless Transmitter Unit
Best wireless upgrade for cyclists wanting easier electronic drivetrain customization.
Elevate your cycling experience with the Shimano EW-WU111B Di2 Wireless Transmitter Unit. This essential component seamlessly integrates with your Di2 system, unlocking wireless communication capabilities. Connect effortlessly to smartphones and tablets to monitor your battery level, update firmware, and customize shifting settings for a personalized ride. Designed to draw power directly from your Di2 battery, it ensures continuous operation without the need for a separate charger. It's the smart way to maintain and optimize your high-performance Shimano drivetrain.
$109.99
Owner Satisfaction
4.6
/ 5
Category Rank
417
/ 2100
#417 in Components
Price vs Category Average
+7%
Above average
Connectivity
Bluetooth, ANT+
/ Bluetooth, ANT+
Who it's for
- Minimalist builders prioritizing clean, aerodynamic cockpit aesthetics
- Data-driven cyclists tracking performance metrics on head units
- Tech-savvy riders customizing shift settings via smartphone apps
Who should skip it
- Budget-conscious cyclists avoiding extra costs on premium components
- Purists seeking only core shifting functionality without extra connectivity
- Mechanics preferring simple installations without additional wiring steps
Performance breakdown
Wireless Connectivity
Seamless Bluetooth and ANT+ pairing for reliable data transmission.
System Integration
Integrates flawlessly into existing Di2 setups without extra wiring.
Customization Depth
Offers granular control over shifting preferences and button mapping.
Firmware Accessibility
Simplifies essential system updates directly through your mobile device.
Power Efficiency
Draws minimal current directly from the main battery for convenience.
Setup Simplicity
Straightforward installation process for any competent home mechanic.
Key Specs
Connectivity
Bluetooth, ANT+
Model Number
EW-WU111B
Compatibility
Shimano Di2 systems
Power Source
Draws power from Di2 battery
Features
- Enables wireless Di2 system communication
- Connects via Bluetooth and ANT+
- Monitor battery level wirelessly
- Supports system firmware updates
- Customize shifting settings
- Integrates with existing Di2 systems
- Smartphone and tablet compatible
What customers say
Customers overwhelmingly view the Shimano EW-WU111B Di2 Wireless Transmitter Unit as an essential upgrade, primarily valuing its enhanced functionality and convenience. This unit seamlessly integrates wireless connectivity through ANT+ and Bluetooth LE, allowing riders to monitor critical data like gear selection and battery life directly on bike computers such as Garmin and Wahoo. A major benefit is the ease of system management using the E-Tube Project app. Users appreciate performing firmware updates and fine tuning shift parameters without needing a wired connection. This level of personalization and data access significantly improves the riding experience, making it a highly recommended investment for maximizing Di2 performance.
Know before you buy
No, the unit draws power directly from your existing Shimano Di2 battery, so you do not need to worry about charging it separately.
The EW-WU111B supports both Bluetooth and ANT+ connectivity, allowing you to pair it with most smartphones, tablets, and compatible cycling computers.
Yes, once installed, the unit enables wireless firmware updates through the Shimano E-TUBE PROJECT app on your smartphone or tablet.
Yes, you can use the wireless connection to customize your shifting settings, such as adjusting multi-shift speed or button assignments, directly through the companion app.
It is designed for use with most E-TUBE compatible Di2 systems. However, you should verify that your specific derailleur and battery setup supports wireless integration before installation.
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