These Mustang Lowering Springs offer approximately a 1.5 inch drop for a more aggressive appearance. Comes with a 1 year limited warranty.Spring length is guaranteed not to sag more than 5mm and to be clear of any manufacture defects.*Features*Ride Height (R): -1.0in (-25mm)Ride Height (F): -1.4in (-36mm)Spring Rate (F): 202lbs/in (3.6kgf/mm)Spring Rate (R): 162lbs/in (2.9kgf/mm)