The SuspensionMAXX MAXXCam 9 Adjustable Torsion Bar Leveling Kit replaces your stock torsion bar keys with an adjustable design, allowing you to lift or level the front suspension of your GM Heavy Duty truck to your specific needs. Unlike standard torsion bar keys, MAXXCam 9 features a patented internal gear adjustment mechanism that raises or lowers the suspension in increments, offering seven different positions. This kit can be calibrated to any required height and degree, ensuring controlled preload and no degradation in handling or ride quality. Crafted from 4140 heat-treated alloy steel, MAXXCam 9 torsion bar keys are robust and protected by industrial strength powder coating. Complementing the new components of Chevrolet and GMC Heavy Duty trucks, MAXXCam 9 includes shock extensions to maintain the original shocks and comfortable stock ride. The kit includes all necessary hardware, including differential relocation spacers, and is a cost-effective alternative to high-priced full lift kits. It's quick to install, requires no extensive vehicle modifications, and is completely reversible. Made in the USA, this product is unique and backed by a MAXX Structural Lifetime Warranty.