A front kidney grille set styled in a carbon-fiber finish for the BMW M4 (F82/F83). A directly matching eBay listing ("Carbon Fiber Front Kidney Grille For BMW F32 F33 F36 F82 F83 428i 435i F80 M3 4D") describes the pieces as ABS plastic with a carbon-fiber-look dual-slat finish rather than genuine woven carbon, installed as a direct bolt-on replacement for the OEM grille with no cutting required.