Far as I can tell yes, I don't see any obvious thing that screams fake, just a little confused by the -04 SKU instead of -01 (since yours looks like the Matte Black with BIP colorway).
Though yours has that little gap between the ear stem and frames, which makes me think it's the Asian Fit version, shown here : Pit Boss II (Asian Fit) can see the same little gap in that picture.
But the SKU on yours isn't for the Asian Fit version.
If you’re not sure, please don’t guess. It just makes it more confusing for the person wanting to know. The majority of PBII frames out there for sale are fake. It’s a highly faked frame