Performance Accessories CL226PA raises the front of the vehicle 1.5 - 2.5-inches. Kit includes high quality forged torsion bar keys, with shock extensions for the Chevy Silverado & GMC Sierra 2500HD/3500HD pickups that maintains the vehicles factory ride. Performance Accessories forged leveling kit keys are designed to level out the front-to-rear stance of the vehicle. This allows the use of up to 33-inch tires for a more aggressive stance improving ride quality on and off-road while still maintaining proper suspension geometry. Easily installs within less than 2 hours. Additional Information: High quality forged steel torsion bar keys High quality shock extensions Easy to install within 2 hours Includes detailed instructions.