Tein SKE18-AUB00 S.Tech Lowering Spring for Mitsubishi Lancer Evolution X Front spring rate: 4.2 kilogram per millimeter (235 pounds per inch) Rear spring rate: 3.8 kilogram per millimeter (179 pounds per inch) Front ride height: -35 millimeter (-1.4 inch) Rear ride height: -25 millimeter (-1 inch) Progressive spring rate design