Our exclusive Detroit Speed rear speed kits combine our individual products into a system designed for your vehicle. The Detroit Speed, Inc. Speed Kit 2 takes performance to the next level. With the Swivel-Links™ pinion angle and/or wheelbase can be adjusted without unbolting the link from the car.Single Adjustable ShockIncludes all features of base shock with 'Detroit Tuned' valving plus installed rebound adjustment with the simple turn of a knob while providing excellent ride quality on the street.Spring Rate: 275lbs/inSpring Free Length: 10in