Sorry to bring this back from the dead, but did you ever figure out if you could do this? I have an xl600 I wanted to do the same with. Thanks
does anyone know how to adjust or modify the speedo drive gear on a xr 600 so when using a smaller 17 inch wheel the speed reads correct?right now i have the trailtech speedo on it but i want to put the stock one back on but to read the right speed.thanks