According to RaceTech's website, For a Hawk GT and rider who is 155 lbs wihthout gear.

Note that the only thing that changes is the spring rate? I put in some other rider weights (100 to 280 lbs)
and still the only thing that changed was the spring rate. Hrm... That sounds weird to me.

oil weightoil heightspring ratespring preloademulator preload
street, all skill levels
prefers softUS-2 /  10 wt.160mm0.823 kg/mm20mm2.0
standard stiffness
prefers stiff0.843 kg/mm
road race, all skill levels
prefers soft0.888 kg/mm
standard stiffness
prefers stiff0.908 kg/mm