Using these mud flaps is easy. First, find the existing OEM mounting locations on your 1998 - 2002 Subaru Forester. You don't need to drill any new holes. Then, use the included stainless steel mounting hardware to attach the mud flaps according to the install instructions. Remember, the colors other than black are custom - made, so there are no returns for colored flaps. For maintenance, just clean them regularly with a mild soap and water. These mud flaps are built to last through extreme heat and cold, but try to avoid hitting them against sharp objects to keep them in good shape. They'll effectively protect your vehicle from road debris and gravel, and their semi - rigid nature ensures they'll keep their shape even at high speeds.