1-3″ Torsion Bars Key Compatible with 2011-2019 Silverado Sierra 2500HD

Compatible: 2011-2019 Silverado 2500HD 3500HD 4WD ,2011-2019 Sierra 2500HD 3500HD 4WD. Benefits: (1)CNC automatic processing ensure high accuracy and stability(0.02mm), Provide accurate hole position for easy installation (2)6061-T6 aluminum forged alloymaterial sturdy and durable (3)High quality pre-installed heat treated 12.9 grade studs.