H&R are some of the very best springs out there! They are made in Germany and come standard in many Audi's, Benz's and maybe BMW's.
The blue ones are most likely the SuperSports. You are lucky to have them because if you didn't, you would want to get some eventually... Everyone does...
They are always back-ordered here in the U.S. cause there is such a demand for them...
Mine are sitting in my spare room waiting to be installed...
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