• thanks Ed. I've got a 5800 rear mech currently though. looks like that's a 7000 mech in the photo?
    maybe I'll upgrade to r7000, or would it be better to go for a grx or xt mech with an 11-40 cassette?

  • If you can, get a GRX derailleur, or long cage 105 R7000.

    I can’t comment on 5800 as haven’t made upgrades on those for quite some time, the R7000/GRX design allow you to get away with it.

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