Front Derailleur

Front Derailleur

Ultegra FD-6870-F

The Shimano FD-6870-F is a braze-on road Di2 front derailleur that can also be mounted using a clamp. It weighs 138.5 g and supports a top gear maximum of 46T-53T & total capacity of 16T.

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When used with the BT-DN110 battery, the 6870 derailleurs are also synchronized shift capable. This front derailleur doesn't allow for as much flexibility as the newer ones do though.

Read more on that in my complete guide to synchronized shift.


  • Model code: FD-6870-F
  • Series: Ultegra (6870)
  • Weight: 138.5g
  • Speeds: 11
  • SD50 ports: 1
  • Total capacity: 16T
  • Chain line: 43.5mm
  • Top gear teeth: 46T - 53T

Related components

View the Short Cage Rear Derailleur (RD-6870-SS)


Short Cage Rear Derailleur

View the Medium Cage Rear Derailleur (RD-6870-GS)


Medium Cage Rear Derailleur

View the Dual Control Lever (ST-6870)


Dual Control Lever

View the Internal Battery (BT-DN110)


Internal Battery

View the Below-the-stem Junction A (SM-EW90-A, SM-EW90-B)

SM-EW90-A, SM-EW90-B

Below-the-stem Junction A

View the Frame/Handlebar Junction (EW-RS910)


Frame/Handlebar Junction

View the Internal Battery (deprecated) (SM-BTR2)


Internal Battery (deprecated)

View the Electric Wire / E-Tube cable (EW-SD50)


Electric Wire / E-Tube cable

Related pages