• This is the info I was trying to squeeze from the forum. I suspected it, hence the question, but hadn't got around to checking. I'm likely to be running Wolftooth so it might not be an issue but I'm not sure, it'll be a slightly different combo to what I've used in the past. Actually, will a Wolftooth work with the direct mount RD? Guess so if it's already got an adapter, but I don't really want 14 pieces of metal holding my RD on. Depends which cassette I end up going with. Lower lower lower is what I've come to the conclusion of riding multiple ultras each year. You can never have low enough gears. I save the 58x11 for the Welsh 25 course.

  • Not sure about DA but I’ve seen a video of someone running Ultegra long cage on a 40T rear cassette without a wolf tooth. Add one in and you could presumably run even bigger.

  • I've used stock GS Ultegra with a 36T. I've not tried bigger than that although I think I have a 40T cassette the bike has been retired.

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