Using the AEM - 29 - 0011WR strut bar is easy. First, locate the existing strut tower bolts under the hood of your Subaru WRX or WRX STI from 2015 - 2021. Then, attach the strut bar to these bolts. You can complete the installation in just a few minutes. When it comes to maintenance, regularly check the bolts for tightness. If you notice any looseness, use a wrench to tighten them. Also, keep the strut bar clean. You can wash it with mild soap and water to maintain its textured red powder - coated finish. Avoid using harsh chemicals as they might damage the coating. As long as you follow these steps, your strut bar will keep your vehicle stable and looking great.