Tein SKQ26-AUB00 S.Tech Lowering Spring for Toyota Corolla Front spring rate: 3.5 kilogram per millimeter (196 pounds per inch) Rear spring rate: 4 kilogram per millimeter (191 pounds per inch) Front ride height: -40 millimeter (-1.6 inch) Rear ride height: -46 millimeter (-1.8 inch) Progressive spring rate design