Tein SKR74-BUB00 High.Tech Lowering Spring for Mitsubishi 3000GT Front spring rate: 3.9 kilogram per millimeter (218 pounds per inch) Rear spring rate: 2.6 kilogram per millimeter (129 pounds per inch) Front ride height: -24 millimeter (-0.9 inch) Rear ride height: -18 millimeter (-0.7 inch) Progressive spring rate design