Using this OLM rear diffuser is a breeze. First, gather all the hardware that comes with the product. Make sure your Subaru WRX or STI (2015 - 2021) is parked on a flat surface. Then, simply bolt the diffuser onto the designated spots on your car using the provided hardware. When it comes to maintenance, a gentle wash with mild soap and water is all you need to keep the gloss - black finish looking great. Avoid using abrasive cleaners as they may damage the painted red line. Also, check the bolts regularly to ensure they are tight and secure. If you notice any chips or scratches on the red line, it's best to have it touched up by a professional.
