This assembly is a suspension upgrade solution designed primarily for Chevrolet C10 trucks, typically manufactured from 1960 to 1987. It replaces the factory leaf spring suspension in the rear with a four-bar linkage system. This configuration utilizes four control arms to locate the rear axle and coil springs or air springs to provide the desired ride height and suspension characteristics. An example would be a complete package including the bars, brackets, hardware, and sometimes even shocks and springs, intended for bolt-on or weld-on installation on a C10 chassis.
The installation of this system offers several advantages, including improved handling, enhanced ride quality, and increased adjustability. The elimination of leaf springs reduces axle wrap and wheel hop, leading to better traction during acceleration and braking. The adjustable nature of the components allows for fine-tuning of the suspension geometry to optimize performance for specific driving conditions or desired vehicle stance. Historically, this type of modification represented a significant advancement in aftermarket truck suspension technology, moving away from the simpler, but less refined, leaf spring designs.