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The world's fastest four-door coupe comes from Brabus and celebrates its world premiere at the Frankfurt Motor Show IAA 2005 in Frankfurt. This automobile, built in small-series production based on the Mercedes CLS model series, is powered by a 730 bhp 6.3-liter twelve-cylinder twin-turbo engine, that was implanted with almost surgical precision into the engine bay of the four-door. The performance speaks for itself: 0 ?62 mph in 4.0 seconds, 0 ?125 mph in 10.5 seconds, 0 ?186 mph in 29.5 seconds are just as unique as is the electronically limited top speed of 350 km/h (220 mph). At the heart of this new high-performance automobile lies the V12 twin-turbo engine from the SL 600. Brabus fits the engine with a special crankshaft, increases the cylinder bore and installs forged pistons, resulting in a displacement increase to 380 cu in. Further modifications include the optimization of the mixture flow in the intake and outlet manifolds of both cylinder heads as well as the installation of sport camshafts. In addition the Brabus powerplant engineers equip the engine with custom-developed larger turbochargers, more efficient intercoolers and a stainless-steel high-performance exhaust system with low back pressure metal catalysts and four tailpipes. Newly programmed engine electronics coordinate all new components perfectly and contribute not only to maximum power yield but also to meeting all current legal emission limits. After the engine conversion, now also available for all Mercedes-Benz 600 and 65 models with twin-turbo V12, the Brabus S V12 S Biturbo engine becomes the most powerful T