SDS Level Lifts are the fastest, safest, least expensive way to bring the front of your HUMMER level with the rear. This gives you the clearance and ability to add wheels and tires up to 37" in diameter. While other lift kits cost thousands to buy and hours to install,level lifts can be installed in about an hour by a certified mechanic, and costs less than the price of a single custom wheel. SDS Lift products do not affect the factory OEM ride quality or comfort. SDS Lift is also the only company that forges torsion keys for ultimate strength. That's why SDS Lift also offers a lifetime warranty for as long as you own your vehicle against manufactures defects.