I had a pair of RE-7's in my truck and loved them. When working under my bagged truck one day I saw that one of the bags had a huge rip in it but was still holding air thank goodness. I saw these SS's on the Slam website and ordered them on Amazon. They were delivered fast and I mounted them using "Loctite 565 PST" left them for a day to cure the thread sealant. When I finally went out and aired them up it was freaking awesome how fast these bags go up compaired to the RE's. It takes less pressure to get the same lift as before, and when I use all the pressure I had used before with the old bags, the truck gets at least an extra inch and a half of lift.the only thing that scarred me and I called and talked to a Slam Tech guy about is the fact that the first time I aired the truck up, the bag looked like it tore lose from the base blate. I could see the chords inside the rubber that secure the base to the bag. When its deflated you can't see the chords. The Tech guy said that was normal and not to worry about it, that these bags are built differently than the old style and seeing the chords at the base was okay.I am very happy with these bags, why save a couple of dollars buying some Chinese made crap, these are made in the USA by people who actually have Bagged trucks. I can't imagine a third world kid in China driving a bagged truck, but he's making the knock off bags, doesn't know what they are but he's making them.