If you were of the opinion that the Mercedes-AMG GT wasn’t already enough of a hooligan, well then, you probably work for German tuning firm Piecha because the aftermarket specialist has given it a boost in power and made the already rowdy Merc, er, rowdier.

Recently, there have been more and more customised versions of the high-performance Merc (we’re looking at you, Drift…) but this latest example sure has our attention. The first thing that Piecha did was to modify the exterior; the tuner added a splitter to the front fascia and carbon fins for the air vents. The profile gets prominent side skirts painted gloss black (but we’re not sure about those five underfloor LED lights…) and it rides on new 19in front and 20in rear alloys (with 13mm spacers front and back) wrapped with Yokohama Advan Sport 275/35 tyres up front and 305/30 tyres at the rear axle. But it is around the back where the most striking changes have taken place; the GT S gets a massive diffuser which incorporates the new hard-chrome-plated double-wall 90mm tailpipes in a fashionable trapezoid shape and if that wasn’t eye-catching enough, there’s also a huge fixed wing back there to increase downforce.

But, this isn’t just an exterior upgrade - Piecha has tweaked the biturbo 4.0-litre V8 too. In the standard ‘S’ trim it makes 510 horsepower and 650Nm of torque but with a poke and prod here and there Piecha has taken those figures up to 612 horses and 840Nm making it even more potent than the range-topping Mercedes-AMG GT R. It will hit 0-100kph in just 3.7 seconds and has a top speed of 330kph.