Tein SKL22-AUB00 S.Tech Lowering Spring for Toyota MR2 Front spring rate: 1.9 kilogram per millimeter (106 pounds per inch) Rear spring rate: 2.9 kilogram per millimeter (196 pounds per inch) Front ride height: -36 millimeter (-1.4 inch) Rear ride height: -31 millimeter (-1.2 inch) Progressive spring rate design