Using these GrimmSpeed fender shrouds is a breeze. First, make sure your car's engine is cool. Then, simply remove the old factory shrouds. You'll find that the new shrouds come with all the necessary hardware for both sides. Just fit them in place - they're designed to be a direct fit, so installation is easy. As for maintenance, keep them clean with a mild car cleaner and a soft cloth. Avoid using abrasive materials that could scratch the powdercoat finish. Also, check the hardware periodically to make sure it's tight. If you live in an area with harsh weather, you might want to give the shrouds a little extra protection to keep them looking great for a long time.