I have a Kawasaki zx10 2004. I has ridden 40000 km with it with no problem.It is all stock.I know only how to change oils in the fork,but cant get out the springs. J like change my settings from the nuts at the fork and shock for optimum performance.And test preload also to fit to my 92 kilos .Only 3 track days i went at 115% of lap record here in Greece.So I am here more to learn not to teach.