I have two sets of XEROLite XSR-3 wheels and I am converting one of the bikes I use them with from Dura Ace 10spd to Dura Ace 11spd. I have checked around (using google) and I have not been able to find any information on the hubs these wheels use. I am trying to see if there is a 11spd conversion freehub available for these wheels. I have carefully examined the wheels and I see no markings what so ever on the hub to indicate any sort of brand.

Anyone familiar with these wheels to maybe point me to a source of either and actual 11spd freehub or a source of info on the manufacture of the hubs?

Thanks in advance.