SoC wrote on 08/09/20 at 21:17:29: ... does anyone know if the drag bars on the higher risers on this bike also have the rod stock welded in internally? ...
Yep, the stock drag bars on the later S40 have the weights in them, and yes, they dampen the vibration.
I've tried a few different bars on my bike, without risers. The 'Z' bars, which had a six inch rise, had the least vibration. The 'Superbars' vibrated so much that my fingertips went numb and white, at higher speeds.
Putting weights in the ends of my bars is on my list of mods.