Zone Offroad torsion keys for the Chevy Silverado, GMC Sierra 2500HD and 3500HD bolt to the factory location. These keys are nodular cast iron for strength with indexed torsion bar slots to ensure a proper lifted and leveled stance. Included are torsion bar bolt keepers to prevent the bolt from slipping off the keys during extreme off-road use. Upper shock extensions are included to allow the use of your factory shocks. This will provide more suspension travel without overextending at full droop. Using a torsion bar tool, this leveling kit is easy to install within 1 to 2 hours. After installation, a set of 35" tires can be installed for a bold new look.

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