TruHart Lowering Springs are a cost-effective way to reduce wheel gap and improve performance. TruHart springs are a progressive rate spring that is about 20% stiffer than your OEM springs, offering a comfortable yet sporty ride. TruHart Lowering Springs match perfectly with our TruHart Sport Shocks however are also compatible with OEM or aftermarket shocks. Manufactured from cold wound 55 chrome silicon steel in an ISO 9001 and TUV approved facility these springs exceed OE standards.