
Index Rear Derailleurs and set Front Derailleur limits using E-Tube Project
Learn how to set up your di2 front derailleur electrical limits and index or micro-adjust your di2 rear derailleur using E-Tube Project 4.

The Ultegra FD-R8050 Front Derailleur supports programmed chainguide control, synchronized shift, coordinates shifting with the rear derailleur through the Di2 control unit and features quick and smooth front shifting, even under high pedaling torque.
The top gear teeth capacity is 46-53T, with a total capacity of 16T.
Youtube mechanic Free To Cycle has a pretty good FD-R8050 Installation video on his channel. Alternatively, head over to the installation guides section of the site for all of my installation guides.

Learn how to set up your di2 front derailleur electrical limits and index or micro-adjust your di2 rear derailleur using E-Tube Project 4.

Bought a new Di2 derailleur or have to replace your old one? Read FD-rx815 / FD-R8150 / FD-R9150 Di2 Front Derailleur installation instructions here.

Read how to set up your two-adjustment-bolt Di2 Front Derailleur (Ultegra FD-R8050, DURA-ACE FD-R9150, GRX FD-RX815)

What is a rear derailleur's total capacity, really? Why is there a top sprocket minimum? And what about front derailleurs? Chain line, total capacity, Top gear teeth? This page explains all of those, and more.