Just like the previous generation R8070 Ultegra dual control levers, these have 'hidden' buttons on top of the shifter hoods. You can set these up any way you like and I wrote an article on just that: setting up the Di2 shifter hood buttons.
While these shift levers support the new wireless Di2 shifting, you can also choose to connect it using EW-SD300 wires. Doing so will improve battery life by approximately 50%.
These shift levers have one SD300 port and one satellite shifter (SW-RS801-T / SW-RS801-S / SW-RS801-E) port.
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While you can customise these levers and change button assignments using the mobile app, you cannot easily update them. The levers need to be wired to the rest of the system in order to enable updating via the mobile app.
I have written a guide on updating 12-speed wireless dual control levers. Read that if you're stuck updating your levers, or simply send me a message.
If video is more your thing, watch Rides of Japan update his levers below:
Don't get stuck in one gear. Learn the 0.5-second check and the critical 11% warning that most riders miss - I'll show you how to check the battery levels and replace your 12-speed Di2 shift lever batteries.
Updating 12-speed Di2 R9270/R8170/R7170 shift levers is not as straightforward as you might think. You need either the SM-PCE02, or connect the levers to the rest of the system using an EW-SD300 wire.
12-speed Di2 rim brake shifters can only be connected by wire - there is no wireless option for these shifters. Even if you're on wireless disc Di2, you may still be interested in connecting your shift levers by wire to increase battery life and eliminate wake up shifts.
Pairing 12-speed Di2 wireless shift levers can be done using the mobile app, wires, or using the SM-PCE02. This page describes how to pair via mobile phone, and E-Tube EW-SD300 wires.
Unpairing 12-speed Di2 wireless shift levers can be done using the mobile app or using the SM-PCE02 and E-Tube Project for Windows. This page describes both methods of unpairing wireless shifters.
Ever wonder what those LEDs mean on your 12-speed rear derailleur, or 11-speed junction box? And what the button does exactly? Find out more here.
