copied this from another forum Having a wild girlfriend that i adore leaves me with a limited budget and a limited selection of suspension systems for my truck. I saved my money for an entire year and bought this cheaper kit and this problem developed. I have put 400 miles on the kit so far and was crawling around under my Avalanche truck checking things out when found a problem. There are 2 heim jointed links that run thru windows in the front drop crossmember. They connect from the crossmember to the centerlink. Both of these links have been hitting on the outside of the windows in the crossmember. One of the links (passenger side) is actually bent a little from this contact. Photo is of the passenger side link, you can see the little notch in the crossmember on the right side created by this contact. To date I have checked out three HD trucks with ProComp kits, they all have contact here and bent arms on the passenger side...just like mine. 4WP ordered the link last week and it seemed like they wanted to keep the matter quiet. They stated that they would be replacing the bent link and grinding a little clearance. 4WP did a really crappy job grinding and spray painting......thier so-called fix to the solution for thier PRO CRAP Suspension Kit. It pissed me off so much, that 4WP owner of Explorer Pro Comp, hasn't even sent out a letter to thier customers to fix this problem, so I filed a compalint with the NHTSA to make PRO COMP replace these parts instead of grinding them down. (National Highway Traffic Safety Administration) Office of Defects Investigation http://www-odi.nhtsa.dot.gov/ivoq/ U.S. Department of Transportation NHTSA C/o Office of Defects Investigations NSA-10.01, 400 7th Street, SW Washington, DC 2059 So then I began running more searches on this company and its Pro Crap Suspension and found out that they are they only company to have a RECALL on thier suspension systems. From the trend of problems, it looks like this comapany was not spending enough money on Research & Developement.