Detroit Speed multi-leaf springs have a spring rate of 175 lb/in and lower your car 1-1/2" from stock. Our leaf springs are superior to others because of the great handling you receive without sacrificing ride quality. In addition, the spring is biased so the front spring section controls spring wrap during hard load conditions. The springs have a tapered leaf with an anti-friction pad between each leaf to help provide a smooth ride. Consider these upgrades when comparing to other leaf springs.