I contacted: Levan Nazarov <[email protected]> His reply said they could provide F4 carbon. It’s manufactured in the Czech Republic, takes about 20-25 days to manufacture, and ship DHL. Somewhat concerning is the absence of a physical address and company contact information. I’ve written Levan expressing this concern but have not received a response yet.
Prices appear to be on par with most. Their website only shows the Brutale and quality appears to be good. No telling about form and fit or associated problems installing.
My bet is they would be interested in producing the part you’re looking for.