What AMRRA has on his first post on this thread are good numbers. Remember though - there is no "perfect" numbers. There are too many other variables (rider style, tire pressure, geometry, track conditions, etc.). Setting your sag is not an "end all"... it's a starting point to get you within proper range of the suspension operation. You may find that you need further adjustments on sag for varying conditions and variables. But there is no "one number". It's' not a one size fits all. Get it within the range and you'll be at a good starting point.