Use this rear wing spoiler when you want to take your 2014 - 2020 BMW M4's look to the next level. It's perfect for car enthusiasts who love to customize their rides. The spoiler is made of FRP material, which is lightweight yet strong. It has an M Performance look that will make your BMW stand out on the road. Although the text doesn't mention specific size or weight, you can expect it to be a great fit for your BMW M4 as it's specifically designed for these models.