It's amazing, talking to people how many of them think the bikes the the "Wild One" were Harleys. I don't think there were more than two Harleys in the movie, one that got stuck under the old guys car, and another it seems was just part of the mob. That one may have been the same one not knowing what order the movie as shot in. At least it was a K Model, probably my favorite Harley anyway.
There were several Matchlesses, BSAs, Ariels and other Brit bikes that did have their badges removed or inverted.