For the 4 Series, customers can now add carbon fiber mirror caps to even the regular models. That said, this is clearly not the M-style mirror design. Instead, images taken from the German configurator show a 420i with the standard mirror housings finished in clear-coat carbon fiber. It’s also not limited to the 4 Series Coupe, as both the Convertible and Gran Coupe can be specified with the same option. As you might expect, the design isn’t available on the M models, where BMW continues to fit the more aggressive mirror design.