I have a KX85 and just mounted the Perillie MT75s but will be adding hever springs but everyting other than that is stock. I had a small wheel with thebmxr said:
17/1.60 front and added the Big wheel rear rim (excel) 16/1.80 in place of the stock 14" wheel. We here on the Gulf coast have a club called edgwise-racing.com and there will be a seires of many races at 4 or 5 different tracks.
If you go to the video on the sight you can see me on the KLX125 (Josh Hayes) doing a small stoppie for a very short clip Im also in a few other clips.