Air Helper Spring Kit Rear SES Suspension compatible for Ford F-250 Super Duty 4WD 2021

ApplicationCompatible for Ford F250 Super Duty 2WD 2017-2024 compatible for Ford F250 Super Duty 4WD 2017-2024SpecificationCondition: Brand New Material: Rubber Spring Placement on Vehicle: Rear left and right Package Length, width and height: 33*21*21 mm Package Wight: 4.4 Kg Rubber spring--- Load capacity: Up to 8600 LBS Design height: 114 mm Stroke: 48 mm Max. Extended: 114 mm Min. Compressed: 66 mm Package includes（as the picture shows）: 2x Pre-Assembled Rubber springs 1x Installation instruction Includes hardware needed to InstallFeature1. Ease of installation: Directly replace the bump stop of the original car. 2. Ease of use: Requires zero maintenance. 3. Reliability: No air leaking, No need for air lines and compressors. 4. Stability: Reduce the sag of the rear end of the car and soften sharp rebounds. 5. Quality: High-quality rubber that has been verified many times. 6. Dacromet is a new surface treatment technology that has excellent corrosion resistance compared to traditional electroplating processes.Note1. This product will not increase the load capacity of your vehicle. 2. Do not exceed the manufacturer's recommended weight limit. 3. All modifications must be installed by qualified personnel and in compliance with your local modification regulations. 4. It is necessary to ensure that there is at least 1/2" of gap between the kit and the frame when the car is empty. 5.Installation instruction included.