Looking through the owners manual for the 2010 Husabergs, it says that a 7.6 rate spring should work for those up to 200 pounds or so. I go 230 with no gear. So, on my 2010 FX 450, following that logic, I install a 8.0, set the static at 35mm, and proceed to check the race sag. 125mm 8O...