Not trying to be argumentative here BUT
We're talking road kings, not Dyna's :58:
That's just not true about the Dyna's. :nosad The FXR had it all over the Dyna's :yes I've had them both.
The Dyna's have the rear swing arm mounted to the rear of the transmission unlike the FXR did, that was mounted to the frame like the baggers. Under the right conditions at around 55 MPH in a sweeper most all of the Dyna's go into a wobble of some magnitude because the swing arm is mounted to the trans which is mounted to the engine and it's all RUBBER mounted to the frame.
(instability at it's best) :hiiWhile it's true that they have stabilizer links, there's just enough play to entice this problem even with them and then the rubber mounts exacerbates (wow, I like that word) the condition even more into a wobble.
Very few Dyna's have not experienced this problem to some degree and at some time in their life. There's a stretch of parkway near me that I could predict that it was going to do it without fail here. It's a sweeping turn to the right and it would do it every time I hit this stretch of road at the right speed.
I even made a jig for rear wheel alignment that would minimize it but not eliminate it completely.
I had Dyna's and can speak first hand about this, it's an ugly feeling. It feels like the bike is wobbling in the rear.