1Fitment: The rear view mirror side spoiler is a replacement for Subaru Wrx Sti 2015?2021, please check the model and year before ordering. 2Function: Set up between the exterior rearview mirror and doors windows. It can effectively block part of the air and reduce the noise inside the car, when you driving with the windows. 3Material: Made of Abs material, smooth surface, which is soft, lightweight, durable and scratch resistant, protect your vehicle against outside harms. 4Accurate Size: Customized according to the original car size, the version is consistent and accurately reserve the front side window position without jamming the edge corners, no drilling or trimming. 5Easy Installation: Self adhesive design. Wipe clean your rearview mirror side window board in advance, and press firmly to ensure a good grip of the adhesive.