Bilstein B6 Performance dampers are a performance upgrade to OE dampers designed to be paired with the OE factory spring. These dampers offer application specific valve settings with a monotube design to bring out the best handling performance of a vehicle. Each damper is rigorously tested for quality that meets or exceeds OE standards. B6 Performance dampers will provide improved safety and handling performance with the added benefit of world-famous Bilstein quality.\nLexus GS300 2005-1997; GS400 2000-1998; GS430 2005-2001\nLexus GS300 2005-1997, GS400 2000-1998, GS430 2005-2001