H&R Springs Super Sport Spring Kit Only from H&R, Super Sport Springs have all the features of Sport Springs, plus additional lowering-great for the seasoned enthusiast looking for a little more. These high tech progressive springs retain superior ride comfort. The handling of your vehicle will be improved with a lower center of gravity. H&R'super Sport Springs give your vehicle the best-looking performance stance. Progressive spring design, superior ride, maximum lowering Improved handling, performance stance (hf) 54SiCr6"spring steel, shot peened, block set, light weight, strong and resilient 100% made in Germany