883 Iron

It is my understanding that a bobber is a standard bike that has been chopped or bobbed. This means removinerg as much surplus weight as possible, ie mudguards, pillion seat etc from the standard bike.
A motorcycle built by a factory cannot, by definition be a bobber.
Neither can a manufacturer build a chopper, a streetfighter or a cafe racer. That's our job.
The nightster or 883 Iron may be a good starting point, but until we get to work on them they aren't bobbers!