BMW G20 M340i / G80 M3 M4 Style Carbon Fiber Trunk SpoilerBMW G20 M340i G80 M3 M4 Style Carbon Fiber Trunk Spoiler by Luminous Carbon Add a sharp, motorsport inspired touch to the rear of your BMW G20 3 Series or G80 M3 with the M4 Style Carbon Fiber Trunk Spoiler from Luminous Carbon. Designed to emulate the factory look of the G82 M4, this spoiler brings aggressive styling in a clean, OEM+ package that seamlessly blends with the lines of your sedan. Made from high quality 2x2 carbon fiber, this spoiler is