xr 600-650 rear spring
 

Hi guys i am preping my xr 600 for long trip hard lugage tent all the usual stuff could do wit a stronger rear spring any one have any info ,in the manual it just lists free length but when i look at sping munufactures they lis kg per mm dont know the standerd strengh in this form to ask for 30 or 40 percent increase any info would be apecated thanks Dave:confused1: