PERFORMANCE LOOK Gloss Black with Matte Black Rear Diffuser FOR BMW 5 Series G30 G31 2017 to 2019 Designed only for the M Sport Rear Bumper , will NOT fit M5 models. Manufactured from PP Plastic Diffuser comes in gloss black with part matte black as shown in pictures. Sometimes its better to remove the bumper from the vehicle to install aftermarket diffusers as it allows easier installation and more movement of the diffuser. ONLY PROFESSIONAL INSTALLATION FROM EXPERIENCED BODYKIT INSTALLERS AND STRICTLY NO DIY OR MECHANICS. If you try and install the part yourself and damage the part It cannot be returned under any circumstance (please refer to terms and conditions)