Brabus Mercedes-Benz CLS Rocket 800
Like its predecessors the new BRABUS ROCKET 800 is also powered by a 12-cylinder high- capacity engine that was converted to 800 V12 Biturbo specifications in the BRABUS engine- building shop. Using state-of-the-art machining processes and with utmost precision in every last detail the engine, based on the latest Mercedes 600 engines, underwent a displacement increase from 5.5 to 6.3 liters (336 to 384 cu. in.).
The displacement increase comprises a special crankshaft with longer stroke, larger, forged pistons and an increase in cylinder bore across the board. Intake and outlet ports of both cylinder heads are optimized for mixture flow, and fitted with sports camshafts.
The intake side was also completely reworked: the hood of the ROCKET 800 features a carbon-fiber ram-air intake system that gets its combustion air through slits in the BRABUS front element.
Another custom development is the BRABUS 800 Biturbo system. It comprises two special exhaust manifolds with integrated high-performance turbochargers, and four water-to-air intercoolers. The stainless-steel high-performance exhaust system with free-flow metal catalysts and butterfly valve was also created specifically for the CLS floorpan.
Just as elaborate was the implantation of the V12 engine and all its peripherals into the modified engine bay of the sedan. Numerous components such as the engine mounts had to be custom designed.
Another engineering masterpiece of the BRABUS engineers is the newly configured on- board electronics system. It includes newly programmed engine mapping that contributes equally to achieving maximum power yield and to meeting the current EURO V emission standards. Just as important is the adaption to the driving dynamics systems such as traction control, ESP, ABS and Brake Assist.
The BRABUS 800 V12 Biturbo engine is lubricated with high-tech motor oil from technology partner ARAL and produces 800 hp (788 bhp) / 588 kW at 5,500 rpm. The even more enormous peak torque of 1,420 Nm (1,047 lb-ft), available from a low 2,100 rpm, is limited electronically in the car to 1,100 Nm (811 lb-ft).
For the first time the BRABUS engine specialists combine this high-end engine with a seven- speed quick-shift gearbox. Gears are shifted by means of shift paddles on the steering wheel or automatically. The BRABUS limited-slip differential, available with various final drive ratios, optimizes traction of the rear-wheel-drive car.
With the longest available final-drive ratio the BRABUS ROCKET 800 reaches a top speed of more than 370 km/h (230 mph), making it the world’s fastest street-legal sedan. But this exclusive high-performance automobile is tops in other areas as well: 0 – 100 km/h (62 mph) in 3.7 seconds, 0 – 200 km/h (124 mph) in 9.8 seconds and 0 – 300 km/h (186 mph) in 23.8 seconds are figures that are as unique as this BRABUS automobile itself.
Like all other BRABUS body components for the new CLS, the ROCKET 800 front element that includes the front spoiler and the radiator frame was developed in the wind tunnel. The aerodynamic-enhancement components for the ROCKET 800 are manufactured form ultra- light yet high-strength carbon fiber.
The front spoiler features large air inlets and side air vents to ensure optimal air supply of radiators, oil coolers and front brakes. Just as important is that it also minimizes lift on the front axle while improving drag. The air inlets above the radiator cutout provide the ram-air intake system of the 12-cylinder engine with ample combustion air.
The air vents in the front fenders are part of the sporty-elegant yet understated appearance of the four-door car. BRABUS side skirts with integrated LED entrance lights calm the airstream along the vehicle’s sides. They also form a transition to the carbon-fiber fender flares on the rear axle, which add 40 millimeters (1.6 in.) to the width of the ROCKET 800 compared to a stock CLS.
To achieve an optimal aerodynamic balance, the BRABUS design studio has developed a rear wing and a rear diffuser for the CLS body. Side air vents in the rear bumper round out the sporty appearance.
A high-performance vehicle such as the BRABUS ROCKET 800 naturally also has a precisely calibrated high-end suspension. A height-adjustable coilover suspension was developed in cooperation with technology partner BILSTEIN. In addition to an adjustable ride height the gas-pressure shocks on front and rear axle feature ten selectable settings each for bound and rebound. Sport sway bars give the car even more agile turn-in and reduce body roll during fast cornering.
The immense top speed of the BRABUS ROCKET 800, for street operations limited electronically to 350 km/h (217 mph), necessitates special high-performance tires. Technology partners Continental, Pirelli and YOKOHAMA mount the 19-inch one-piece BRABUS Monoblock F wheels with high-speed-capable tires. The front axle features size 9.5Jx19 wheels and tires in size 255/35 ZR 19. Tires in size 285/30 ZR 19 mounted on identically sized wheels on the rear axle provide excellent traction.
Source: Brabus press