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Fits Chevy/GMC 2500HD (20-24) 7 Inch Lift Kit; Torsion Drop; M1; 11740 LowMargin Keep the check engine light7 Inch Lift Kit Torsion Drop M1 Chevy GMC 2500HD (20 24) Ultimate Upgrade. Give your GM 2500 an unbeatable stance and better ride quality with Rough Country's 7 inch Lift Kit with Torsion Drop. This kit is a unique offering of suspension lifts, delivering the desired torsion drop look and ride you want while still offering unmatched ground clearance. The Torsion Drop brackets are designed to ensure that your vehicle's track width is not widened and