This diffuser has been hand-made in house from lightweight carbon-fibre and comes with a high-gloss finish. This is a completely new design and an optional product for the BMW M5 (G90, G99). It keeps within the lines of the car and is designed to emphasize the sporty prowess of The Akrapovic Tail Pipe Set (Carbon). It is ABE approved.The diffuser cannot be fitted on cars with a genuine trailer tow hitch.