Part #: 666 541 A. The Cusco Type OS strut bar for Subaru WRX and STI is made of tubular aluminum oval shaft with a high - polish look. This aluminum bar is super rigid, reducing chassis flex effectively. The end plates, painted in classic Cusco blue, offer a long - lasting, eye - catching finish. It's easy to install and comes with all the necessary hardware.

Using this Cusco Type OS rear strut bar is straightforward. First, gather all the included hardware. Then, locate the appropriate mounting points on your 2002 - 2007 Subaru WRX or STI. Attach the strut bar firmly using the provided hardware. When installing, make sure to tighten the bolts properly but don't over - tighten them. As for maintenance, regularly check the strut bar for any signs of damage or loose bolts. You can clean it with a mild soap and water solution to keep the high - polish finish looking good. Avoid using harsh chemicals as they might damage the blue paint on the end plates.