Using these Whiteline lowering springs is straightforward. First, make sure your vehicle is a 2022 - 2025 Subaru WRX. If you're not confident with the installation, it's best to have a professional mechanic do it. Once installed, your car will immediately benefit from improved handling. When it comes to maintenance, regularly check the springs for any signs of damage like cracks or rust. Keep them clean to prevent dirt build - up which could affect performance. Also, if you notice any unusual noises or changes in the ride quality, have the springs inspected right away. And remember, for the best results, consider using them with Whiteline Sway Bar and Essentials kit.