Using this Cobb Alloy Front Lower Control Arm Set is easy. First, make sure your car is a 2015 - 2021 Subaru WRX or STI. When installing, follow the standard alignment procedures. For track or street use, you'll notice improved handling right away. As for maintenance, regularly check the bushings for any signs of wear. If you hear unusual noises or notice changes in handling, it might be time to inspect the bushings. Keep the control arms clean to prevent dirt and debris from causing premature wear. This will help ensure a long service life for your control arms.