Had bought all of the carbon fiber parts from “RW Carbon” for my 2017 BMW M2 but ended up selling the car. My lost your gain. Never installed/used. Fits 2016+ F87 M2. Additional info and pics are listed in eBay. (see links below). Please let me know if you have further questions.

Carbon fiber diffuser. Bolt on installation that requires no special modifications or cutting to your vehicle. This BMW M2 performance style carbon fiber diffuser features genuine 2x2 constructions that is hand crafted from high quality CF fabric and completed with a UV resistant clear coat. $350 USD
https://www.ebay.com/itm/223181318519

Carbon fiber front splitters. Hand crafted set of F87 M2 front splitters with genuine 2x2 carbon fiber that will nicely match any other OEM or RW parts you have installed on your car. $350 USD
https://www.ebay.com/itm/223181332333

To complete your carbon fiber aero kit set of carbon fiber side skirt winglets. $350 USD.
https://www.ebay.com/itm/223181347505

Carbon fiber e-brake handle with real Alcantara and carbon fiber Gear Selector Cover. Please note this CF gear selector only fits vehicles equipped with the DCT transmission. Both for $140 USD
https://www.ebay.com/itm/223181363676