This is a premium 2-3" leveling kit for 01-10 Chevy/GMC 2500HD/3500 8 LUG trucks and SUVs. We use replacement tubular upper control arms that relocate the bump stop on the a-arm to maximize the down travel of the front suspension. This allows the suspension to cycle without being prematurely stopped, and creating the harsh ride that occurs when just turning up the torsion bars, or changing the torsion bar adjuster keys. The Cognito tubular upper control arms use a polyurethane bump stop to provide a subtler stop, unlike the factory upper arms that use metal-to-metal stops. The Cognito tubular upper control arms also correct the upper ball joint angle which is a problem of the factory upper control arms after turning up the suspension. The alignment of the front end is also corrected so that it will fall into factory alignment specifications, something that is almost impossible on a truck leveled out with the factory upper control arms.
THIS KIT CONSISTS OF: tubular upper a-arm kit, shock extensions, and 2-3" leveling torsion keys. We also have optional Bilstein shocks to upgrade from shock extensions for a better than factory ride.