It's been upgraded to 700 horsepower because, you know, 577 bhp just wasn't enough.

While we’re patiently waiting for Mercedes-AMG to introduce the G63 S, tuners are already finding ways to spice up the performance SUV. Case in point, the Milton Keynes-based aftermarket specialists at Urban Automotive amped-up the G-Wagen and gave it a comprehensive carbon fibre treatment.

2019 Mercedes-AMG G63 widebody by Urban Automotive

They went to town customising the G63, with everything from the bumpers to the rear spoiler at the back made from carbon fibre. Even the side sills make use of the lightweight material, as do the beefier wheel arches extending the width of the vehicle by 50 mm compared to the standard version. The carbon fibre package is rounded off by the spare wheel cover and the lower diffuser lending the G63 a more aggressive look.

2019 Mercedes-AMG G63 widebody by Urban Automotive
2019 Mercedes-AMG G63 widebody by Urban Automotive
2019 Mercedes-AMG G63 widebody by Urban Automotive

Beyond the diet and those roof-mounted LED lights, the speedy SUV from Mercedes has gained a new set of 23-inch wheels with matching tyres complemented by a custom suspension setup. The sound delivered by the twin-turbo 4.0-litre V8 can be adjusted to your liking thanks to the new exhaust system with switchable valves.

2019 Mercedes-AMG G63 widebody by Urban Automotive

Speaking of the engine, it wouldn’t be a complete tuning kit without some extra muscle coming from underneath the bonnet. Urban Automotive took the eight-cylinder mill to 700 bhp or 123 hp more than the standard G63. As you may recall, the stock version is not exactly slow, with real-world testing showing it accelerates to 62 mph in four seconds or 0.5s less than the official specs sheet.

2019 Mercedes-AMG G63 widebody by Urban Automotive

Should you prefer a faster and more powerful version of the G-Class straight from Mercedes-AMG, the future looks bright. Beyond the aforementioned G63 S variant, there might be a G73 further down the line. The model’s designation was trademarked nearly a year ago and might have something in common with the 805-bhp electrified powertrain the AMG GT Concept had.

Gallery: 2019 Mercedes-AMG G63 widebody by Urban Automotive