Cognito's Torsion Bar Keys are an excellent solution for leveling the front of your 2011-2019 GM 2500/3500 truck. Their robust, forged construction ensures durability, and they're designed for easy bolt-in installation. These keys set the ride height of the truck's front end, commonly used in leveling kits, and proper height setting maintains good ride quality. GM trucks have varying torsion bar spring rates, and some may not require aftermarket keys for maximum ride height. This kit suits leveling and lifted applications, made in the USA.