Inline Barrel Adjusters with Shimano 105 R7020? I'm upgrading my Shimano 105 5800 shifters to newer 7020 shifters in order to equip my bike with hydraulic brakes. I'm not changing any other components as part of this upgrade. The kit shipped with the necessary cables but without inline barrel adjusters. I did some reading and the 7000 front derailleur has "integrated cable tension adjustment" so it appears that it doesn't need barrel adjusters. I am not sure if the derailleur manages this on its own, or is a combination of shifter + derailleur, etc.

Considering I will continue using my existing derailleur, I want to confirm that I should cut the new cable housings and add my old barrel adjusters to this setup.
If you have the newer FD-5801 you don’t need the dedicated inline barrel adjusters. The derailleur itself has a built-in tension adjustment hex screw. It rotates the cable clamping point around which effectively shortens or lengthens the cable.

See page 18 in the manual: https://si.shimano.com/pdfs/dm/DM-RAFD001-05-ENG.pdf


  Adjust the cable tension with the cable adjustment barrel (C) or cable
  adjuster on the frame so that the bracket indicator (B) or (E) is
  aligned with the input link indicator (A) or (D).


Of course you can still install inline barrel adjusters. They allow for an increased adjustment range, can be adjusted while riding and don’t require a hex key.

The FD-5800 doesn't have the integrated cable tension adjustment.