They are dealer add-ons. My dealer mentioned that they can install it for free, but I declined. In my opinion these small PPFs look terrible after 2-3 years on light colored cars when the dirt and road grime start to buildup on the edges.
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My FE with rock sliders has it in several areas. It's an option.It doesn't feel like a film given the thickness. The body also sounds different when I knock it here comparing to area around it. What I am the most curious is why it doesn't come with other First Edition which also have rock slider.