Using this fender reinforcement brace is easy. First, make sure your car is parked on a flat surface and the engine is turned off. Locate the door hinge and inner fender areas of your 2008 - 2014 Subaru WRX or STI. Mount the brace firmly in place as described in the installation guide. When it comes to maintenance, regularly check the brace for any signs of damage or loose bolts. You can clean it with a mild soap and water solution. Avoid using harsh chemicals as they might damage the powder coating. If you notice any issues during normal use, don't hesitate to contact our support team, and remember, the product comes with a 2 - year warranty for your peace of mind.