Like it's DURA-ACE sibling, the Ultegra R8050 Dual Control levers feature hidden buttons on top of the hoods. These buttons can be programmed to do anything. Most riders seem to set them up to change pages on their head unit, or to change synchronized shifting mode.
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The R8050 shifters feature two e-tube ports and one dedicated sprint shifter port. A pair of them weighs 295g.
Modern Di2 shift levers have buttons on top of the hoods, but unless you're on 12-speed Di2, their default function only works with a wireless unit or d-fly. Learn how to set these buttons to shift derailleurs.
Learn how to install Di2 drop bar levers commonly used on Di2 road bikes or Di2 gravel bikes. I'll walk you through the process and give you some useful tips.
Do you have small hands? Or extra large hands? Read this page to figure out how to change your Shimano Di2 shift lever (or shifter) reach.
Below is an overview of all known firmware updates for this component. The changelog texts are Shimano's, and quite often they're a bit cryptic - sorry!
3.3.0
Changes due to the release of firmware for related units. (No change for the use of ST-R8050)
3.2.1
-Added interchangeability between SHIMANO STEPS with Road components.- Adopted models （ST-R8070/ST-RX815）
3.1.0
Additional ANT function for D-FLY channel switch setting (cycle computer setting)
3.0.1
Adapted for ULTEGRA Di2 (R8050 series)
