The 2021 Brabus ROCKET 900 “One of Ten” which is definitely a limited edition and it packs 900 PS (888 hp, 662 kW). It’s also a fitting addition to the Rocket lineage that has been built by Brabus in different forms.
The new Brabus Rocket 900 is based around the Mercedes-AMG GT 63 S 4Matic+ and starts out with the standard 4.0-liter twin-turbocharged V8 being increased to 4.5-liters. In addition, Brabus has created a bespoke precision-balanced billet crankshaft with the stroke increased to 100 mm (3.9-inches), while also fitting bespoke billet piston rods, larger forged pistons, and increasing the cylinder bores to 84 mm (3.3-inches).
The 2021 Rocket 900 also includes a carbon fiber ram-air intake system and has been outfitted with a high-performance exhaust system made from stainless steel and complete with adjustable exhaust flaps that are electronically controlled.
The end result is an impressive output of 888 horsepower (662 kilowatts) and a gigantic 922 pound-feet (1,250 Newton-meters) of torque. However, Brabus installs an electronic limiter to protect the drivetrain by capping torque to “only” 774 lb-ft (1,050 Nm). Doing the math, the output compared to a series GT63 S has been bumped by a whopping 258 hp (192 kW) and 110 lb-ft (150 Nm).
You can imagine the significant power boost has had a huge impact on performance. The regular GT63 S is already among the fastest four-door cars out there, but the Brabus Rocket 900 takes things to a whole new level. It does 0 to 62 mph (100 km/h) in 2.8 seconds, 0-124 mph (0-200 km/h) in 9.7, and 0-186 mph (0-300 km/h) in 23.9 seconds. Brabus says it had to limit the top speed to 205 mph (330 km/h) due to the car’s high weight and to protect the tires.
To match the added performance, Brabus has designed a bespoke widebody kit for the Rocket 900 that includes flared fenders that increase the width of the car by 7.8 cm (3.1 inches) at the rear. There is also a multi-piece carbon fiber rear wing and diffuser, as well as a set of Brabus Monoblock Z Platinum Edition wheels measuring 21×10.5 at the front and 22×12 at the rear with 295/30 and 335/25 tires respectively.
Brabus will build just 10 examples and buying a fully equipped one costs an eye-watering €427,000 euro excluding VAT, the equivalent of just about $515,000 at current exchange rates.