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I was thinking of upgrading my Tiagra derailleur with new 105 FD-R7000, but then I read that it might not be compatible with my 105 5800 crankset because the new R7000 crankset has different spacing between chainrings. Will I have a problem if I upgrade to a R7000 front derailleur with 5800 crankset?

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  • You also need to check that your front shifter (105 5800 or Tiagra 4700?) is compatible with the R7000 front derailleur.
    – Argenti Apparatus
    Dec 5, 2018 at 14:56
  • all road front shiftters with double chainrings are compatable i guess.
    – Umut Birey
    Dec 6, 2018 at 18:57
  • I've got the new 105 R7000 front derailleur running on a Tiagra crankset...works fine...in fact it works great. I'd definitely recommend the new 105 FD as an upgrade, the new mechanism design gives super smooth shifting.
    – Simon Pitchforth
    Feb 1, 2019 at 6:33
  • @SimonPitchforth FWIW, I just built up a bike with an FD-R7000 front derailleur that has a Sora FC-3550 compact crankset in place until the new 105 crankset arrives from ProBikeKit. It shifts so badly up front with horrible chain suck that I'm not about to ride the bike until the proper crankset arrives. There are limits to how far you can push Shimano compatibility...
    – Andrew Henle
    Feb 1, 2019 at 10:49

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Shimano lists the FD-R7000 front derailleur as compatible with the FC-5800 crankset in their products compatibility information, but the R7000 crankset wont be compatible with the old derailleur. enter image description here

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  • what is the meaning of colors in this chart? blue, orange ?
    – Umut Birey
    Dec 5, 2018 at 10:09
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    @UmutBirey Orange means the component is discontinued and blue means its a new product.
    – airace3
    Dec 5, 2018 at 10:34
  • Nice answer with reference doc. Can you add a link to the current location of that chart?
    – Argenti Apparatus
    Dec 5, 2018 at 14:12

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