Using this exhaust tip kit is easy. First, make sure your vehicle is turned off and cooled down. Then, remove the old exhaust tips from your 2011 - 2021 Subaru WRX or STI. Slide the new tips onto the exhaust pipe using the 2.5' slip - joint inlet. Secure them in place with the included clamps. When it comes to maintenance, keep the tips clean by washing them regularly with mild soap and water. Avoid using abrasive cleaners as they may damage the blued finish or the laser - etched logo. Also, check the clamps periodically to ensure they are tight and not loose. If you notice any signs of rust or damage, replace the tips promptly.