Review on GMRCK25 Suspension Enhancement System by Timbren by Jon Garcia

Very easy installation. Even used old equipment. You only have to lift the frame to make room to access the old bumper blocks. I did without the supplied spacer because I wanted to relieve the gap between the spring and the axle. I loaded about 400 pounds in my 1997 GMC Sierra and the spring made contact with the axle so there was no play. I took it for a test ride, it works fine (although it rides a little harder). I then hooked up my 6,000 lb camper trailer and with the cargo bars/roll bars the truck is level with the trailer. The BIG difference on the Interstate is the minimal sway and roll of passing semis. Great product that gives me complete confidence when towing!