• Yeah, I didn't want to change the mech. The one on here already cost £250.

    Someone was explaining the GRX derailler to me recently. It has a different parallelogram swing or something so works better with wide range cassettes than road stuff. I mean, that's the point, but it's nice that it's actually true.

  • £250

    A rear derailleur?
    The GRX has a better clutch too compared with the Ultegra RX I think, that could help on your 324 links chain

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