Disc brake only. I'm surprised by that, considering Shimano still makes rim brake versions of Ultegra and Dura Ace Di2.
Also, this makes me wonder how much longer 11sp mechanical Ultegra will be around. Seems like this 105 Di2 version would basically replace that in terms of build tiers for OEM.
EDIT: Also noteworthy are those new carbon wheels.Tubless and 32mm rim profile, 21mm internal rim width, and claimed weight of 1,502g. 46mm rim depth, 21mm internal rim width, and a claimed weight of 1,610g. A bit narrow considering the trend direction, but $1050 seems like bargain.
Last edited by msu2001la; 06-29-22 at 12:45 PM.