By: IOL Motoring Staff

German tuner Piecha is the latest to tinker with the Mercedes-AMG GT S, and its self-proclaimed "masterpiece" is called the GT-RSR.

While mum on the exact technical enhancements made, Piecha claims to have extracted 450kW and 840Nm from AMG's 4-litre twin-turbo V8 - that's up 75kW on the GT S engine on which it's based and even out-powers the hardcore, motorsport-inspired GT R by 20kW. The (claimed) zero to 100km/h sprint only improves by 0.1 seconds to 3.7s, although no split second is easily achieved when you're playing in this league.

The go-faster package is matched with the appropriate carbon-fibre look-faster bits, including a more aerodynamic front apron, large rear spoiler and a rather striking diffuser with fins, which also improves downforce.

Road holding is further aided by a set of Piecha coil-overs and 19-inch Yokohama Advan Sport tyres rated for 330km/h.

Finally, Piecha added extra glamour in the form of an LED under-floor lighting system that activates when the doors are opened or closed.

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