Fitment: For Silverado 2500 HD 2WD/4WD 2011-2023 For Silverado 3500 HD 2WD/4WD 2011-2023 For Silverado 3500 HD & Chassis 2WD/4WD 2011-2023 For Sierra 2500 HD 2WD/4WD 2011-2023 For Sierra 3500 HD 2WD/4WD 2011-2023 For Sierra 3500 HD & Chassis 2WD/4WD 2011-2023 Feature: 1.Directly replaces the bump stop of the car for easy installation. 2.Requires zero maintenance. 3.No air leaking, no need for air lines and compressors. 4.Reduces the sag of the rear end and softens rebounds. 5.Made from rubber material. Specification: Condition: Brand Drilling Required: No Material: Rubber Spring Placement on Vehicle: Rear left and right Package Dimensions: 28 x 14 x 23 mm Package Weight: 2.9 kg Rubber Spring Details: Load capacity: Up to 8600 LBS Design height: 158.5 mm Stroke: 86 mm Max Extended: 158.5 mm Min Compressed: 72.5 mm Package Includes: 2x Pre-Assembled Rubber springs 1x Installation instruction Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.