Tein SKA00-BUB00 High.Tech Lowering Spring for Honda Civic/Delsol Front spring rate: 3.4 kilogram per millimeter (190 pounds per inch) Rear spring rate: 2.3 kilogram per millimeter (184 pounds per inch) Front ride height: -31 millimeter (-1.2 inch) Rear ride height: -20 millimeter (-0.8 inch) Progressive spring rate design