Review on Optimized Suspension 🚗 Enhancement System - Timbren GMRG25C by Joseph Lang

I installed them on our 2007 GMC Savanah full size van. We towed the van at times, but needed extra rear suspension support to keep it flat since the springs were so soft. It seemed like the perfect solution. Easy to install but almost impossible to remove and go back to the original bumpers. They work great when towing, but when not being towed the bumpers tend to bounce off the springs, resulting in harsh rear-wheel drive. I shortened them an extra inch and that worked for some, but it also reduced their ability to compensate when towing. Still the cheapest solution to the problem.