Tein SKP02-AUB00 S.Tech Lowering Spring for Nissan Sentra Front spring rate: 3 kilogram per millimeter (168 pounds per inch) Rear spring rate: 4.8 kilogram per millimeter (358 pounds per inch) Front ride height: -34 millimeter (-1.3 inch) Rear ride height: -29 millimeter (-1.1 inch) Progressive spring rate design