They fixed my rear wheel hop and stopped rear drag when towing an RV. Installation was easy and I find it best to jack up one side to remove/install the shock before doing the other side. For some reason, if you raise both sides at once (in jack stands), the wheels don't drop as much as if you only lifted one side at a time. As a result, you get about 2 inches less length needed for easy shock installation. I have a 2004 Dodge Ram and the driver's side is easy to install, but the top mounting bracket on the passenger's side won't let you install the damper. The shock spring is too large and is pressing against the top mounting bracket. I had to grind about 1/4" of material off the top mounting bracket to attach it. I'm not sure if this was a Dodge manufacturing defect on my particular truck or if all Dodge Rams (2004) will have the same issue .