Ok, so I chucked my stock bars and got a set of Renthals. I went up to their site, looked through the list of standard 7/8" dirtbike bars, compared my rise and sweepback to what they offered, picked out what I wanted, and ordered it from a local shop. These are actually listed as replacements for a KX250.
On the clutch side the bar is actually knurled under the grip area, this makes it slightly larger in diameter than on the throttle side. So you have to pry the clamp, that holds the controls on the bar, to fit the larger diameter through it. Don't pry too much cause that cast aluminum clamp will snap right off... trust me I know.

Once the controls are in place the grip will go on with a little bit of pushing and twisting. Not even sure I'll need to put the two screws back in to hold it in place. Maybe one just for insurance. On the throttle side there is no knurling, so things slide on a bit easier. Haven't quite figured out what I'm going to do about the heated grips or the weights. Renthal does make bar end weights, but you can't just put them in cause the wires for the heated grip move as you twist the throttle, so you have to give them some slack in the setup. Have to think about that one some.
Although these things are aluminum, you don't really need the brace cause the wall thickness is about an eight of an inch... sturdy.
You think if I leave the brace pad on it's too much...
