Using these hood dampers is super easy. First, make sure your car is a 2015 - 2021 Subaru WRX or STI. When installing, use a screwdriver to remove the old struts and put in these new ones. They're held in place by a locking tab at each end. You can pick between the Black/Red or Black/Blue carbon fiber color finishes to match your style. Remember, always install the carbon kevlar tubes closest to the hood and keep them away from the fender. For maintenance, just check the locking tabs regularly to make sure they're secure. If you notice any issues with the gas - filled struts, like a loss of pressure, it might be time to replace them. And that's all there is to it!