Featuring a unique, exclusive valving system and advanced compression functionality, Rancho�� RS5000���X shocks deliver improved overall on- and off-road handling and performance. Rancho RS5000X RS55378 Shock Absorber 2011-2022 Chevrolet Silverado 2500 HD (Front) (Qualifier: with Front Raised Height 1.0 (in) to 2.5 (in), Not for use with aftermarket shock spacers or relocation brackets.); 2011-2022 Chevrolet Silverado 3500 HD (Front) (Qualifier: with Front Raised Height 1.0 (in) to 2.5 (in), Not for use with aftermarket shock spacers or relocation brackets.); 2011-2022 GMC Sierra 2500 HD (Front) (Qualifier: with Front Raised Height 1.0 (in) to 2.5 (in), Not for use with aftermarket shock spacers or relocation brackets.); 2011-2022 GMC Sierra 3500 HD (Front) (Qualifier: with Front Raised Height 1.0 (in) to 2.5 (in), Not for use with aftermarket shock spacers or relocation brackets.)