BMR springs are specifically designed to provide optimal handling without sacrificing ride quality. The front springs are progressive wound to provide variable rates. The soft portion of the progressive winding maintains near OE ride quality. When the suspension is loaded during aggressive cornering, the springs enter into the stiffer portion of the spring. BMR has designed additional spring rate into this portion of the spring for better control and reduced body roll. The rear springs are linear wound with the same proven spring rate as OE. Part number SP009 will lower the front and the rear , "levelling" the car.