In the beginning, it was down to a bunch of backyard grease monkeys, factory owners and manufacturing magnates to kit-bash, jury-rig and cobble together the first motorized two-wheelers. Although few of them stayed in the game, their legends live on in the steel and chrome of today’s hogs, choppers and scoots. How well do you remember the now-defunct greats?

American motorcycle manufacturers (that no longer exist) quiz