MK4 Focus ST-Line Rear Spoiler ExtensionSuits MK4 Focus St Line Models INSTALL DOES NOT REQUIRE BUMPER REMOVAL Details: Complete the aggressive look of your MK4 Focus ST Line with our newly developed spoiler extension. The rear spoiler extension is designed and developed in house, at our Bayswater factory in Australia, with our team focused on providing you another sustainable customisation option for your Focus ST Line! The rear spoiler extension is suitable for MK4 Focus ST Line models,