I may be mistaken but they are both progressive springs. I am not sure if you can determine a set spring rate. Unless you account for how stiff it can become..?Im looking at the h&r sport spring or the eibach sportlines. Anyone have any imput on which one is stiffer. I hear they are both good, not to bouncy and the both drop about 1.5". How much stiffer are they over stock? And out of the two which one is stiffer?
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