If you want to tune your vehicle's suspension, there is no better option than Tein's-Tech Springs! These exceptional springs are created for use with OEM or OEM replacement shocks. The S-Tech Springs come with durable chrome vanadium SAE9254V construction and green powder coat finish. The springs also feature progressive spring rate design and allow nearly 1.5 inch drop for more aggressive stance. Excellent combination of convenience and performance is guaranteed, because all S-Tech Springs are road tested in North America. Tein's-Tech Springs are available with 1-year manufacturer's defect and sag warranty. But, please, keep in mind that the warranty does not cover powder coat finish and rusting.