Iv got a 19"....i believe it was off a sx, i fitted it to my 04 400 exc as my 18 had a few loose spokes, im back in the 18 now.
Some one has re painted the rim black but it flaking off around the edges, bearings were good when i got it and never needed to change them. From memory it runs straight but there is a little bulge in one side of the rim, possibly from where some one tried to get tyre off with levers.
More than welcome to look at it, taking up space in my garage.