This Perrin Gurney Flap is designed for 2015 - 2021 Subaru WRX and STI models with a low - profile wing. It offers multiple benefits. First, it boosts aerodynamic efficiency. While it slightly increases drag, it significantly decreases lift. Crafted from 10G 6061 - T6 plate aluminum, it's durable. The precision laser - cut slotted holes allow for easy alignment adjustments, ensuring a perfect fit. It has a semi - gloss black finish with a white PERRIN logo, adding an aggressive and clean look to your low - profile trunk spoiler. Installation is rated as easy to intermediate, taking about 1 hour. You'll get installation instructions and a 5 - year manufacturer warranty. The package includes a PERRIN Gurney Flap, a rivet nut tool, various screws and washers, a PERRIN License Plate Frame, and warranty details. This flap increases downforce substantially: 35 lbs at 75 mph, 62 lbs at 100 mph, and nearly 100 lbs at 125 mph. It has a small profile, so rear visibility remains almost the same, and the third brake light stays higher than the flap. Note that you'll need to drill into the existing Limited trunk spoiler.








Using your Perrin Gurney Flap is straightforward. First, gather all the tools included in the box. The installation process is rated as easy to intermediate and should take about an hour. Follow the provided installation instructions carefully. Remember, you'll need to drill into the existing Limited trunk spoiler. After installation, your car will have improved aerodynamics and a more aggressive look. When it comes to maintenance, keep it clean with a mild car cleaner. The semi - gloss black finish is durable, but avoid using abrasive materials that could scratch it. The 5 - year manufacturer warranty gives you peace of mind, so if you encounter any issues, reach out to the manufacturer. Enjoy the increased downforce at different speeds and the stylish addition to your Subaru WRX or STI.