In Europe, there is no genuine accessory central stand for R or X however it exists for Z both those with ABS and those without.
XT660Z with ABS 56P-F7111-00-00
XT660Z without ABS 11D-W0794-00-00
I would say that it will not fit without modifications as they do not share the same frame.

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XTX 2011. Yamaha Hand Guards, Akrapovic slipon mufflers, Snorkel removed, Airbox drilled, AIS Blocked, PCV, Dynojet Autotune, Kev O2 Controller, Dna Stage 2, KN air filter, mini indicators, steel sprocket cover, cnc levers, cnc mirrors.