This system includes multi-rate rear coil springs for a more compliant ride. The lighter initial rate of these performance rear coil springs helps the truck feel smoother and more controlled over washboard roads, small whoops, or similar terrain. The secondary rate allows the truck to maintain exceptional ride quality over larger obstacles, while at the same time retaining factory payload capacity (at a reduced ride height). These performance systems were specifically developed for the 3/4 ton truck enthusiast who enjoys aggressive off-road adventures and does not tow or haul heavy loads.