H&R 28747-1 Sport Springs give a lowered stance at minimal cost. Aftermarket shocks designed to work with higher rate springs are recommended for use with Sport Springs.
H&R Spring Manufacturing:
H&R springs are ISO 9001 certified and TUV approved and are crafted from a special (hf) 54SiCr6 spring steel to ensure premium quality and performance. The springs are also shot-peened which increases their life by over 200%.