Brabus Bullit Coupe 800 is a Mercedes C63 AMG Coupe with a V12 on Steroids

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The Smart Fortwo-based Ultimate 120 that we told you about in our previous post may be a special treat but the…800-pound gorilla at Brabus' 2012 Geneva Motor Show stand will no doubt be the Bullit Coupe 800.

With this limited production model, Brabus promises to offer supercar-shredding levels of performance under the guise of a C63 AMG Coupe. Of course, nothing comes for free and the Bullit Coupe 800 commands a supercar price - €378,000 or US$507,000 to be precise.

Brabus engineers started by replacing the regular C63 AMG Coupe's 6.3-liter V8 engine that develops 451hp and 600Nm with the same 6.3-liter twin-turbocharged V12 found under the hood of the limited run Brabus E V12 special, which in turn borrowed the engine from the S600.

Numerous alterations were made to the powerplant itself as well as the body of the C-Class model in order to fit the V12 in the engine bay. The highly modified 12-cylinder unit churns out an amazing 800PS (788hp) at 5,500rpm and a tire-shredding peak torque of 1,420 Nm (1,047 lb-ft), which is electronically limited to 1,100 Nm (811 lb-ft).

All that power is channeled to the rear wheels through a reinforced seven-speed automatic transmission with paddle shifters and a limited-slip rear differential with a locking rate of 40 percent.

It takes the Bullit 800 Coupe just 3.7 seconds to pass from 0-100km/h (62mph), 9.8 seconds to 200 km/h (124 mph), and 23.8 seconds to 300km/h (186mph), while it can continue accelerating up to 370km/h (230mph)!

Rounding out the mechanical upgrades is a sport suspension with customer-selectable ride height and damper rates, a high-performance brake system with vented and grooved steel brake discs (380mm) and 12-piston aluminum fixed calipers in the front and vented and grooved steel discs (360mm) and six-piston fixed aluminum calipers on the rear axle, plus a special exhaust system.

The Bullit 800 Coupe rides on 20-inch wheels wrapped around 235/30 ZR 20 tires up front and 275/25 ZR 20 at the back.

In order to reach speeds of up to 370km/h while maintaining directional stability, Brabus designed a special aerodynamic kit developed in a wind tunnel. All parts are made of carbon fiber to keep the weight down.

As for the interior, the German tuner used a combination of black leather and Alcantara with contrasting red seams, adding carbon-fiber trim components and a bespoke steering wheel.