The R1 Concepts Geo-Carbon drilled and slotted rear rotor for Lexus GS430 (1998–2010) is specified as a direct-fit rear replacement for the GS430 model years listed. Its drilled-and-slotted surface and Geoperformance designation present an upgraded rotor option when replacing worn rear discs. The description supports this rotor's intended rear application without extrapolating beyond the listed fitment.
DFC 98-10 Lexus GS430 Rear Drilled & Slotted Geoperformance Rotors