Originally Posted by
adamrice
A through-axle frame doesn't have "open" dropouts like this one, the dropouts are sockets that completely enclose the TA, and the through-axles are always (AFAICT) included with the frame (also note that there are 2 different through-axle diameters and 3 different threads).
Might have to modify that somewhat. Some bikes with thru-axles do actually have an open drop out or fork end on one side. It's been around a while. Haven't actually seen one in person. Or at least not one that I realized what I was looking at.