Introducing the redesigned GM 3.5" Suspension Lift by Rough Country Suspension Systems with some exciting upgrades to make your off-road experience even better. These updated kits now feature our critically acclaimed N3 shock absorbers and rear blocks. Our Nitrogen charged N3 Shocks offer the best in balanced performance for on and off-road use, featuring a 10-stage velocity sensitive valving custom tuned for this specific application. That means these shocks are specifically valved for use with this specific vehicle and lift combo, giving you unparalleled performance for any driving situation.