Brabus took the wraps off its new B63S-700 6x6 at the Frankfurt motor show
The Brabus 6x6 benefits from an additional 155bhp
The Brabus' V8 features upgraded turbochargers and additional heat shielding for the intake system
Brabus describes it as "the mightiest G model ever"
The engine upgrade package is also available on other Mercedes-Benz 63 AMG SUVs.
High-performance catalytic convertors are fitted to reduce backpressure in the exhaust system
A substantial 708lb ft is sent to all six wheels via a Mercedes 7G-TRONIC automatic transmission
The stainless-steel sports exhaust system has a butterfuly valve which offers...
... more power and a more pronounced exhaust note when open
Brabus has remapped the 6x6's ECU to make the most of the upgrades
Despite the significant increases, the Brabus still comes with a three year, 62,000-mile warranty
The B63S-700 is claimed to be capable of 0-62mph in 7.4sec
Interior upgrades include 'fiery red and black leather and Alcantara'
Brabus says the interior features 'pinpoint precision' stitching
Also fitted are backlit Brabus stainless-steel scuff plates and aluminium highlights
A special radiator grille is standard, which inclues a Brabus logo
Exterior modifications to the 6x6 are designed to give it a more imposing and purposeful appearance
Brabus' cosmetic modifications range from a front spoiler...
... to mirror-polished rock guards
The Brabus meets current Euro V emissions standards
Brabus says that the B63S-700 is limited to 99mph in order to preserve its tyres
The bonnet features a carbonfibre structure, while the exterior mirrors also get carbonfibre shells
The twin-turbo V8 engine displaces 5.5 litres; Brabus says its modifications unleash the 'inherent power slumbering' within it
The tyres measure an impressive 37" in diameter
Standard versions of the G63 AMG 6x6 produce 536bhp and 561bhp, which is channelled to all six wheels via an AMG Speedshift Plus 7G-Tronic automatic transmission.
Brabus, however, has boosted that figure to 691bhp and a substantial 708lb ft thanks to the addition of its 'B63S-700' performance kit. The significant gains, of 155bhp and 147lb ft, are thanks to the installation of a pair of new turbochargers, a tweaked ECU, high-flow catalytic convertors, a sports exhaust system and the additional heat shielding for the intake system.
Consequently the six-wheeled 3775kg powerhouse is now capable of sprinting from 0-62mph in 7.4sec, although the top speed remains unchanged at 99mph - an electrical limitation enforced to protect the 37-inch off-road tyres, rather than the powertrain.
The B63S-700 6x6 also features an exhaust valve system that offers 'Sport' and 'Coming Home' modes, allowing for offering 'optimised' power and exhaust noise - or relative silence - when desired.
In order to increase the imposing and purposeful nature of the B63S-700 - not that it really needs any help on that front, mind - Brabus has added a front spoiler, a special grille with an integrated Brabus logo, black xenon headlights, a host of carbonfibre parts and special finishes.
The upgrades continue inside, with a combination of finely-stitched leather and Alcantara. Both the floor and roof lining are finished in leather too, in an effort to deliver a truly top-class feel. Further improvements come in the form of stainless-steel scuff plates with illuminated Brabus logos, special alloy shift paddles and other minor aluminium highlights.
Despite the significant increase in power, a three year, 62,000-mile warranty is standard. Additionally, the B63S-700 package is available for any of Mercedes-Benz's 63 AMG SUVs.
Official pricing has yet to be confirmed for what Brabus describes as "the mightiest G model ever", but the standard model is estimated to cost a not-insignificant £350,000.
To read our full road test of the standard 6x6, click here.
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