Set up Front Derailleur limits (FD-RX815, FD-R9150, FD-R8050)
Read how to set up your two-adjustment-bolt Di2 Front Derailleur (Ultegra FD-R8050, DURA-ACE FD-R9150, GRX FD-RX815)
Front Derailleur
FD-RX815
The Shimano GRX RX815 Di2 gravel front derailleur was developed to handle the different GRX chain line (+2.5mm outwards) perfectly. It is meant to be used with the GRX RD-RX815, but will work with road rear derailleurs too.
Its total capacity is 17T and supports 46-50T top gear teeth.
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Specifications
- Model code
- FD-RX815
- Series
- GRX RX815
- Weight
- 135g
- SD50 ports
- 1
- Chain line
- 47mm
- Total capacity
- 17T
- Top gear teeth
- 46T - 48T
Related components
View all components
Understanding Di2 derailleur specifications
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.
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.
Installation Guide: GRX FD-RX815 / Ultegra FD-R8050 / DURA-ACE FD-R9150 Di2 Front Derailleur
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.