12-speed Di2 New User Guide
Just bought a new 12-speed Di2 bike? This page explains what the buttons do, how to charge, and what synchronized shfit does.
Front Derailleur
Ultegra FD-R8150-F
The FD-R8150 is Shimano's new 12 speed Di2 Front Derailleur, to be used with the semi-wireless R8150 groupset released in 2021.
It works with the BT-DN300 battery and EW-SD300 Electric Wire.
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, but the shifters send their shift commands wirelessly.
Affiliate Links
Using the affiliate links to purchase anything earns the site a small commission, at no additional cost to you.
Backward compatibility
This front derailleur is meant to be used with a 12-speed rear derailleur. Just like when Di2 made the jump from 10 speed to 11 speed, this new front derailleur won't work with older 11-speed derailleurs.
Specifications
- Model code: FD-R8150-F
- Series: Ultegra (R8100)
- Weight: 116g
- Speeds: 12
- SD300 ports: 1
- Total capacity: 16T
- Chain line: 44.5mm
- Top gear teeth: 50T - 52T
Related components
View all componentsRelated pages
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. Don't worry, though, it's easy! I'll show you how to install the 12-speed Di2 front derailleur, and set its limits and micro-adjustment.
Synchronized Shifting - the complete guide
Synchronized Shifting - what is it exactly? What does it do and how can you set it up? This page will guide you through the process of setting up synchro shift.
Manuals & other documents
More images