Good product, setting the air pressure to max raises the back of my old RV at least 6 inches. Installation requires jacks, tall supports, and tools. should be able to loosen the spring clips and if you live in an area where salt is used on the roads this may not be possible at all. Requires truck frame drilling, in my case I had to buy a long drill bit, 5/16" as access was difficult. All parts were included and the fit was good.