Fitment:
2011-2019 Chevrolet Silverado 2500HD/3500HD;Only fit for 8-lug 4WD
2011-2019 GMC Sierra 2500HD/3500HD;Only fit for 8-lug 4WD
About Torsion Key:
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Surface Finish: Black Powder coated,provide resistance to corrosion
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Torsion Key Lift: 1"-3"
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Made of high strength forged carbon-steel
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Twice srength of the factory system
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No modification or drilling is required.Easy to install kit about 2-4 hours
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To level your vehicle, add a lift amount equivalent to the difference between front and rear heights
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Lift your vehicle - while retaining the stock look, add the same lift amount to both front and rear
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Level lift your vehicle, add the amount of lift for the front to the difference between front and rear stock heights and use this for your rear lift
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Professional installation is highly recommended