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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 b

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The same instant and flawless shifting as its Ultegra sibling, but at a much lower price point. 12-speed wireless Di2 for everyone.

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Front Derailleur

While Ultegra and Dura-Ace 12-speed front derailleurs don't have any limit bolts, the [105 one](/component/105-front-derailleur-fd-r7150/) does. 

The top (high) limit for the [105 front derailleur](/component/105-front-derailleur-fd-r7150/) is set using an adjustment bolt, and the low limit is set electronically.

Before your start, make sure you have correctly set up your front derailleur height, angle, and support bolt. Have a look at the 12-speed [front derailleur installation guide](/installation-guide/12-speed-front-derailleur-installation-and-adjustment-guide/) for information on how to do that.

## Adjusting the top adjustment bolt
![One bolt FD Adjustment and Support bolts](https://assets.bettershifting.com/one_bolt_limit_setup_GRX_ultegra_dura_ace_fd_bolts_51b07dc9d1.png)

You will need a **size 2 hex wrench** to set the top adjustment bolt.

The first step is to shift the front derailleur to the **large chainring** and the rear derailleur to the **largest sprocket**.

![Set up 105 Front Derailleur top limits](https://assets.bettershifting.com/set_up_105_limits_high_top1_04cfaccf9e.png)

Next, turn the top adjustment bolt to set the correct clearance between the chain and chain guide **inner** plate. You’re looking for **0 – 0.5 mm** of clearance.

## Set the low limit
There may not be a low adjustment bolt, but that doesn’t mean you do not need to set it up. To start, shift the front derailleur to the **small chainring** and the rear derailleur to the **largest sprocket**.

![Set up 105 derailleur Low limit, press the button](https://assets.bettershifting.com/set_up_105_limits_low_button1_b3278f57f5.png)

Now press and hold the button on your **rear derailleur** until the LED next to it lights up yellow. This should take about **2 - 5 seconds**.

You have just put the bike in **adjustment mode**.

The final step is to set the correct clearance between the chain and the chain guide **inner plate**. This time you’re looking for about **0 to 0.5 mm** of clearance.

You adjust the derailleur by pressing the *left* (front derailleur) shifter buttons.

![Press the switches to adjust the derailleurs.](https://assets.bettershifting.com/set_up_105_limits_low_limit2_f217c1da6e.png)

This front derailleur can move 18 steps inward and 18 steps outward from the initial position (37 steps total). It can be easy to lose track of the current position, but if you find that it doesn’t move when you press a button you’ve probably gone too far. 

You can get the current adjustment value by [connecting to the bike using the mobile app](/di2-e-tube-software-and-downloads/#etpcyclist). Note that you can also set the low limit using the mobile app.

Note that when you’re in this adjustment mode the chain guide will overrun slightly and then move back in an exaggerated manner, so that you can check the adjustment direction. When checking the positions of the chain guide and the chain, perform the check after the front derailleur has moved back and come to a stop.

Press and hold the button on your **rear derailleur** to leave adjustment mode. Now shift the front and rear derailleurs through all gears and make sure chain rub does not occur in any gear. If it does, go back into adjustment mode and tweak the chain clearance.

## All set!
That's it - your derailleur should now be working just fine, without any chain rub. Take the bike for a ride, and tweak the settings if necessary. 

Is the front derailleur giving you a hard time? Feel free to [send me a message](/contact/) any time!

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Read how to set up your 105 12-speed Di2 Front Derailleur - FD-R7150. You'll do so using the top(high) limit bolt and electric low limit.

Front Derailleur

Wireless, but wired

Compatibility

Details & Specifications

Shopping links

More images