I wouldn't consider doing this unless i removed the swing arm, ground the welds flush.For all you welders out there. I’ve noticed that the welds on the swing arm of my 900 look like crap. I’m considering smoothing them out. Do you think Kawasaki left the welds like that to save money or is it a structural thing?
Ditto what he said.Do not grind it off. You will weaken the joint. If it is a matter of looks, do like was said above, do body work on it: putty, and smooth it out and sand it it.