I just purchased a 105 5800 Groupset for my bike that currently has the older 10 speed 5600 on it. My biggest concern with the new groupset is fitting the cassette, I currently have this rear hub:
http://www.ebay.com/itm/Bontrager-Race-Hub-Cyclecross-240134-D-E-Ships-Same-Day-FREE-/222188029293?nma=true&si=GHTpjo9%252B0FvuoCBZHObpVh1fOWg%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557There is not much info that I can find about this hub, but I am assuming that an 11 speed cassette won't fit on this? Can I just buy a new rear hub that accepts an 11 speed cassette and have a shop install it?