Custom tune the spring rate and ride height of your Jeep Wrangler by swapping in these coil springs. Designed for a 2" lift in the 4-door model and a 3" lift in the 2-door model. A critical part of your vehicle's suspension, BDS coil springs are manufactured from high tensile steel. These direct OE replacement coil springs are engineered with properly sized wire diameter. This results in maximum reliability without premature coil bind.