Just a word of warning, this is a MTB wheelset, requiring XT/XTR compatible cassettes. Ask me how I know.
After extolling the virtues of this wonderful wheelset (XTR 90290) which it is, I now find myself in deep $hite. I have Ultegra Di2 on the bike and the road cassettes will not fit on the mtb freehub.
I could buy a XTR or XT cassette, but don't know if it will play nice with the Ultegra mech's.
If anyone here has somehow married the two (road/mtb), please let me know what my alternatives are now.