Use this rear wing spoiler when you want to give your 2015 - 2021 Subaru WRX STI a sporty and stylish look. It's perfect for car enthusiasts who love to customize their vehicles. The spoiler is made of FRP material which is lightweight and can improve the car's aerodynamics. Although specific size and weight details aren't provided, you can expect it to be a well - fitting addition to your Subaru. Professional installation is needed to ensure it's set up correctly.