A long galvanized steel bolt (12mm thick/160mm or longer) and the right nutz from homedepo t solved it , same issue, it got lost. The one I got what is a few millimeters too long and 1mm too thick but it def. got the job done and maybe it can also be used as a peg.
6$ vs unobtainable !! Yes u can not find or buy this specific thru axle b/c it is 11mm and quite long.
The one in the pic is not the one(need with hex head not the oval) , but it's the right size(length /W/thread size)
165mm/12mm/1.25mm thread size.