Set up 12-speed 105 Di2 and GRX Di2 Front Derailleur limits
Read how to set up your GRX/105 12-speed Di2 Front Derailleur - FD-RX825 / FD-R7150. You'll do so using the top(high) limit bolt and electric low limit.
Front Derailleur
105 FD-R7150
The FD-R7150 is Shimano's new 105 12 speed Di2 Front Derailleur, used with the semi-wireless R7150 groupset released in 2022.
It works with the BT-DN300 battery and EW-SD300 Electric Wire.
Since this is essentially the older FD-R8050, it has a top limit bolt. To set up the front derailleur correctly, take a look at my page on setting R7150 105 front derailleur limits.
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Wireless, but wired
So the new Di2 components are wireless but still have E-Tube Ports. What gives?
The new Di2 system is only semi-wireless, meaning that the derailleurs are still plugged into the battery. The shifters send their shift commands wirelessly, but Ultegra and Dura-Ace shifters can be wired to the rest of the system to increase battery life.
Compatibility
This 105 Di2 front derailleur is meant to be used with a 12-speed rear derailleur. It is compatible with all 12-speed Di2 road rear derailleurs.
Specifications
- Model code
- FD-R7150
- Series
- 105 R7150
- Weight
- 142g
- SD50 ports
- 1
- Total capacity
- 16T
- Chain line
- 44.5mm
- Top gear teeth
- 50-52T
Related components
View all components
12-speed Front Derailleur installation and adjustment guide
Twelve-speed Di2 Front Derailleurs do not have any limit bolts, so installing the derailleur and setting the limits is different from what you're used to.
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.
Images
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