[Closed] 11 Speed Ultegra & XT 11-40 cassette

11spd mtb and road cassette spacing is not the same.
There will be bodges out there, no doubt.

11spd mtb and road cassette spacing is not the same.

Since when? They use a different freehub but AFAIK the spacing between sprockets are identical.

Would I be able to run an XT rear cassette on this set up.

Are you running 1 or 2 chainrings?

Edit : You'll probably need one of these...
http://www.wolftoothcomponents.com/pages/roadlink-tech-page

I use an XT cassette on my cross bike, just needed a (? 1.8mm ?) spacer as the road cassette was a tad wider.

Thanks Simon - the roadlink looks just the job

No problem. And as qwerty says, you'll need a 1.85mm spacer behind the cassette (they generally come with 11spd road/cross wheels)

My do it all/gravel bike currently has Ultegra hydo shifters and med cage rear mech and an 11 - 32 cassette. Would I be able to run an XT rear cassette on this set up.

32T is supposed to be the max an ultegra mech can take, you'd need an XT mech as well as the cassette.

Edit: See roadlink edit by simon above

<quote>you'd need an XT mech as well as the cassette.</quote>

But just to point out the XT mech won't play nicely with the Ultegra shifters so don't go down this road.

I've just done this with a 105 medium cage derailleur and STI's, an xt 11-40 cassette and a Roadlink. Everything played nicely though I had to reverse the 'B' screw to clear the 40 tooth sprocket.

Maybe- I stretched a 10s 105 to handle an 11-36 (only rated for 28) but that was 1x. Make sure the mech has the capacity.

If not I can recommend the wolf tooth tanpan plus MTB mech approach. As a nice aside if you pair the 11s tanpan with 11s shifters you can run a 10s MTB mech and cassette- currently a useful way for me to get a bit more use out of the old MTB 10s drivetrain.

Yes you can with a medium cage derailleur and road link.
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