Want an easy, fast way to adjust the ride height of your Silverado HD truck? Maxtrac Suspension now offers its forged torsion-bar leveling keys for the 2011-'12 Chevrolet Silverado 2500/3500 HD. The corrosion-resistant, powder-coated torsion keys give 1-3 inches of adjustable front-end lift and are some 25 percent stronger than stock keys. The kit also includes zinc-plated shock extenders. Maxtrac's keys are backed by a limited lifetime warranty. MSRP: $150.