Using these Seibon CS side skirts is simple. Just have them installed below your car's original side skirts by a professional or someone with experience in car parts installation. When it comes to receiving your order, always make sure to inspect the package carefully before you accept it. If you notice any damage during transit, call us immediately so we can help you out. As for maintenance, a regular car wash using mild soap and water will keep them looking great. Avoid using harsh chemicals as they might damage the finish. Remember, most of these items are custom - made, so if you pre - order, be patient as it can take 8 - 12 weeks for them to be manufactured. But trust us, the end result will be worth the wait and will enhance the look of your 2008 - 2014 STI or 2011 - 2014 WRX hatchback.