When i went down just over 1 inch, under compression my front fender would touch the radiator... barely, but it did...
Course, i do need to do some tweaking on the suspension...
I'm actually raising mine back up front and rear a smiggin for the sake of the turbo hanging low, and everything else... It does look bad ass, but you loose cornering ability... Even a mediocre rider like myself noticed it IMMEDIATLY...
The first time my toes touched ground in a light corner was a rude awakening...
High speed straight line stability was however improved and i felt like aerodynamics improved as well...
just my .02