These leveling keys are a game - changer for your 2001 - 2010 GMC 2500/3500 HD with a 6.6L Duramax engine. Cranking up the factory torsion bars can cause issues like overloading adjusters, limiting suspension travel, and accelerating front - end wear. But our special re - indexed torsion bar adjusting keys (Part Number: KRKEY10) level your vehicle without sacrificing suspension performance or ride quality. You can even fit up to 33' diameter tires! Installation takes just 2 hours. And they come with Kryptonite's No Fine Print Lifetime Warranty, which covers manufacturer defects, premature wear, or breakage. Note that the warranty excludes Heim Joints, and you must buy from an authorized dealer and register the warranty within 90 days of purchase.

Using these leveling keys is quite straightforward. First, make sure your vehicle is parked on a flat surface and the engine is off. You'll need basic tools to remove the old torsion bar keys and install the new KRKEY10 keys. It should take about 2 hours to complete the installation. When fitting tires, keep in mind that they should be up to 33' in diameter. As for maintenance, regularly check the keys for any signs of wear or damage. If you notice any issues, contact Kryptonite right away. Remember, for the warranty to be valid, you must purchase from an authorized dealer and register it within 90 days of buying the product. Also, the warranty does not cover Heim Joints.