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The future SL65 AMG Black Series that will make its world debut this summer is believed to be one of the most extreme Mercedes ever built. And the 670 HP are the testimony!

The SL65 AMG Black Series will be powered by the same 6.0-liter twin turbo V12 engine found in the standard SL65 AMG, but for the Black Series the output is increased to 670 hp. The torque peak won’t increase, but given that it already sits at 738 pound-feet, there’s really isn’t a need for more. It will be offered with the same five-speed automatic transmission and the torque converter from the standard version, but will also get two Sport shift programs, with the second delivering quicker gearchanges timed at just 250 milliseconds.

In addition to the added power, the engineers at Mercedes-Benz concentrated on reducing the car’s weight. AMG’s engineers chucked the heavy airbag suspension setup on the standard SL65 for steel coil springs, lost the Active Body Control system and made the Black’s trunk, vented hood, roof, vented front fenders and bumpers out of carbon fiber.

It will make the 0 to 60 mph sprint in less than 4 seconds and will hit a top speed of 198 mph.