BMW G8X M3/M4 Carbon Fiber Dual Fin Duct TrimsBMW G8X M3 M4 Carbon Fiber Dual Fin Duct Trims by Luminous Carbon Upgrade your G8Xs front end with a sharp, race inspired detail the Dry Carbon Fiber Brake Duct Trims by Luminous Carbon. Designed specifically for the BMW G80 M3 and G82 G83 M4, these premium trims replace the factory plastic ducts with full pre preg dry carbon fiber, giving your bumper a cleaner and more aggressive look. Crafted using autoclave cured pre preg carbon fiber, these trims