Using this Super Pro Front Alloy Control Arm Kit is straightforward. First, make sure your vehicle is a 2011 - 2014 Subaru WRX or 2008 - 2014 Subaru STI. You can have a professional mechanic install the control arms as they are sold in pairs and meant for the front of the vehicle. During installation, handle the parts gently as they are made of high - grade alloy. After installation, take your car for a short test drive to feel the improved handling. As for maintenance, keep the control arms clean. You can wash them with a mild soap and water solution during regular car washes. Check the Super Pro Bushings periodically for any signs of wear or damage. Remember, this is a clearance item and not returnable, so handle it with care from the start.