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Is Shimano XTR 2x11 shifter compatible with 2x11 Dura-ace RD and FD? I'm looking to upgrade my old bike with porteur type handlebar with some high-end components. I'm planning to make it like an all around sleeper bike but built with speed and being lightweight in mind.
Edit: Mechanical only
Shimano 11 speed MTB and road derailleurs and shifters are not compatible. The cable pull per shift and derailleur actuation ratios are different. See this Art's Cyclery page](https://www.artscyclery.com/science-behind-the-magic/science-behind-the-magic-drivetrain-compatibility/).
The MTB groups use a longer cable pull to be more reliable in dirty conditions.
While rear derailleur cable pull/actuation ratios are well documented, front ones are not, but I have to assume 11 speed MTB and road groups use different pulls and are not compatible.
MTB double cranks typically have a 10 tooth difference between rings whereas roads cranks have a 16 tooth difference. Cages on MTB front derailleurs are therefore smaller and will not work with road cranks.
You don't mention whether you are asking about mechanical or electronic (Di2). Assuming you have mechanical components, the answer is "no".
The shifter cable pull between MTB and Road Shimano components is not compatible.
