Maybe
I'm not sure about the SX models, but I know the EXC's don't say off road only on the Certificate of Origin. I was able to go to the DMV with my Certificate of Origin, the original sales receipt and a little bit of cash and walk out with a tag for my KTM 200exc. I also applied for a street legal title, which I received a month or two later. I did add a brake light, mirror and bicycle bell so it would be legal on the street ( of course I already had the other lights), but no inspection was required for the KTM in Illinois.
Good Luck
Neal