Yea for the front brembo calipers. So can I assume its not a necessary part to have installed since it only appears on some models?

If that's the case then I'm guessing there are two types of front caliper mounting bolts as well. One would have to be longer to accommodate the brace, whereas on cars without the brace it would require a shorted bolt.

Problem now is that I'm not sure which part number is for the longer bolt, and which is for the shorter one.