Cognito Torsion Bar Keys for 2001-2010 Silverado/Sierra 2500/3500 2WD/4WD 2001-2022 GMC Sierra 2500 Designed and manufactured in Woodbury

Designed and manufactured in Woodbury

3L Ford 99-02 Auto Van 5-Settings (No High Idle)

+12 HP and +32 lbs

Optimized shift schedules and converter lockup

Cognito Torsion Bar Keys for 2001-2010 Silverado/Sierra 2500/3500 2WD/4WD 2001-2022 GMC Sierra 2500 Designed and manufactured in WoodburyTorsion bar keys are used to set the ride height of the front of the truck and are commonly used in leveling kits, and it is important to set the height appropriately as to leave ample suspension droop travel to maintain a good ride quality. There are several different torsion bar spring rates that GM made and put in these trucks, the rate depending on the model and features of the truck. Some trucks that have a higher spring rate may not need