One of the tech people at KYB told me that the new AGX and the older GABs are exactly the same, except that KYB will be marketing them. My car has GABs on the front and the AGX on the back. There is no way I could run those shocks set on #4 for the street. Even on the track, I run 2 in front, 3-5 in back depending on the track. If the AGX's are ok on the street at #4, there is no way the valving can be the same as the GABs. Either way, they seem to work very well.