German tuner Kicherer has developed a second individualisation program for the Mercedes SLS AMG, which is called the SLS Supersport Black Edition, as an indication a reference to its black on back exterior.
So apart from the matte black foil and the 20 inch RS-1 light alloy wheels wrapped in high-performance tires the Kicherer Mercedes SLS Supersport Black Edition features a carbon fiber spoiler lip and a carbon diffuser. Other elements include new side grilles and a quad pipe exhaust system with large round exhaust-tips. 
As far as performance the Kicherer Mercedes SLS Supersport Black Edition also comes with improvements, as the 6.3-litre V8 AMG engine produces 620 HP instead of 571 HP which means accelerating from 0 to 100 Km/h takes less than 3.8 seconds. 

Source: Kicherer