Feature:1. It is an aerodynamic part that improves rear tire traction by using the flow of air across the body while driving to apply down force, and improve stable control while driving at high speeds.2. Gives better aerodynamics for your vehicle reduces drag, increases fuel efficiency, reinforces downforce, traction and stability.3. Made of high quality ABS plastic material, anticorrosion and high strength for maximum durability.4. Get a track inspired look at a fraction of the cost, easy installation using doublesided tape.5. Glossy black paint will greatly improve the sporty appearance of your car.Specification:Condition: 100% Brand NewItem Type: Roof SpoilerMaterial: ABS PlasticColor: Glossy Black PaintedInstallation: Add-OnFitment: Fit for 3 Series F30 2013-2019Fit for M3 F80 2014-2018 (Only Fit for 4-Door Models!! )Fitting Instructions:1. Make sure that the mounting surface is deaned thoroughly afterward.2. Test fit the spoiler prior to installing.3. Line up the spoiler on the rear window and mark its proper positioning with painter's tape.4. Peel the red backing of the tape approximately 2 inches from either side of the spoiler.5. Place the spoiler on the car without removing all of the red backing of the tape.6. Once you have the spoiler aligned into the correct position, carefully remove the red backing of the tape while the spoiler is simultaneously being pressed firmly into place. It is recommended that two people complete this step.7. Apply pressure to the spoiler after it is installed with painter's tape, with additional attention given to the corners. It is recommended that you do not drive the car until the spoiler is given time to solidify firmly to the rear window..Package List:1 x Roof Spoiler2 x Double Sided Adhesive Tape