RideTech offers this CoolRide system that replaces the traditional coil spring and shock with an air spring and shock as separate units. CoolRide systems are engineered to perform and come with all hardware and brackets. The CoolRide® system will raise and lower the vehicle, improving the handling and offering a terrific ride. HQ Series Shocks provide rebound adjustment to the driver and the ability to tune ride quality and handling to your specific taste. A wide range of rebound adjustment allows you to cruise down the road in plush comfort or firm up your suspension for those Saturday morning rides.