To use these fender flares, first, make sure your 2006 - 2007 Subaru WRX or STI is clean. Then, carefully prep the flares as they require some work before final fitting. Once prepped, fit them onto your car's fenders. After fitting, you can paint them to match your car's color. Remember, these flares are made to order and will take 2 weeks to ship after you place your order. For maintenance, regularly clean the flares with a mild soap and water solution. Avoid using harsh chemicals as they might damage the white gelcoat finish.