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Message: [QUOTE="dirtroost, post: 817354, member: 32361"] I just purchased a brand new 03 525sx and while i was in the process of setting shock sag i came to the conclusion the stock spring was to stiff for my 160 lbs.so I contacted mx- tech to find out the right spring rate for my weight and sure enough he told me the stock #7 was to hard for my weight and that the #6 spring is softer and should do the trick.Well after installing the new spring i came up with the same sag numbers as before the springs looked identical except for the numbers printed on the spring the #7 had 76-95/260 the new one had 71-90/260 are these spring rate numbers or batch numbers, Could different preloads cause this problems. [/QUOTE]