Spring Rates... ?
The difference between stock struts and the AGX is like comparing apples and, uhm, fruit salad.
The stock struts are not designed to endure any loads greater than the stock springs can handle. The rod and gas in the stock strut are engineered only for those springs, anything with a lower spring rate fill eventually bottom the rod and blow the chamber. The only springs designed to help avoid this are Eibach springs, they have a spring rate that is closest to stock because the load is spread evenly over all 4 struts but lowering the centering of the car for better handling.
AGX are well... adjustable. They ARE designed to be extremely flexible as far as load and rod travel. There is actually a 3rd chamber in the AGX that is adjustable allowing you to adjust to driving comfort and road conditions. The AGX also has a "check valve" to minimize foaming of the gases under any conditions... this is what kills stock struts.
So let's recap:
Stock Struts = Stock springs or Eibach Springs
AGX = Anything, all springs and coils for 7g Galant and 2g Eclipse non-turbo will work well.
Eibach Springs + GR-2's is the best ride for your money, no question.
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