Is my Giant P-R2/DT Swiss wheel compatable with 11 speed hub

[Cobra1993ky]

I have a 2013 Giant TCR SL2 Aluminum bike. I am wanting to upgrade from 105 10 speed to Dura Ace 9000 11 speed for nicer shifting and to shed some weight. I weighed the bike brand new at 8.25 Kg. I would like to keep my original wheels. My question is: is my rear wheel 11 speed compatable? The wheel description from Giant is:

Giant P-R2, Double Wall
Hubs: Giant Sealed Bearing, 24/28h
Spokes: DT Swiss Competition, 14/15g

Thanks in advance

[sungod]

i'd guess not - if it were 11sp compatible it seems likely giant would mention it in the specs...

https://www.giant-bicycles.com/en-us/bi ... ifications

if you remove the cassette, is there a spacer?

the spec says it's a tiagra cassette, from memory these had no thin 1mm spacer unlike most shimano 10sp cassettes, so if you find a 1.8mm spacer, it's likely to be 11sp compatible

http://www.slowtwitch.com/Tech/Cassette ... _3978.html