Bolt-on a set of Aldan American TruLine Series shocks to your NBS, Chevrolet Silverado 1500 truck and feel your rear suspension come to life! Our TruLine Series shocks are adjustable, allowing fine tune adjustment of your shock speed. These adjustments are easy to tune and will soften or firm up your rear suspension based on your preference. TruLine Series shocks are designed to work with factory style rear springs and use the OEM shock mounting locations in the rear. This kit is intended to be used with a rear flip-kit. If you’re looking to bring your rear suspension into the 21st century with better handling and a smoother ride _ This kit is a one-stop solution. Bolt-on & Go!