The information is on race techs web site now. Go to the search pull down menu, click on product search, select street, then click on hayabusa, then select 99-07 or 08-09 and hit continue. It brings up all the products for chosen motorcycle and gives you the manufacturer of the stock components and the stock spring rates. The Gen 2 has .93 kg/mm fork springs and 14.5 kg/mm shock spring. Gen 1 is .85 kg/mm fork and 13.1 kg/mm shock spring.