September 6, 2019 By Mike
Last updated on September 6, 2019

POSAIDON RS 830+ (based on Mercedes-AMG GT R)

Black Beast: 880 hp and 1,000 Nm for the AMG GT R

It is a well-known fact that any Mercedes car with AMG tacked onto the end of its name gives you a supreme sports car experience that provides countless hours of driving fun. This applies in particular to cars with the famous four-liter twin-turbo V8 engine, but also to the models at the lower end of the portfolio with their powerful four and six-cylinder engines. But the undisputed champion of the AMG world is without a doubt the GT R. With 585 hp and 700 Nm of torque, this thoroughbred sports car – which was subjected to intensive trials on the North Loop of the Nürburgring during its development – could even make its main competitor, the Porsche 911, quake in its boots.

And yet, the M178 eight-cylinder engine under the long front hood of the coupé still has tremendous optimization potential. This has been demonstrated impressively by the specialists at POSAIDON, who have elevated the GT R into the league of the super sports cars once and for all: The Mercedes now delivers up to 880 hp and bears the name POSAIDON RS 830+. The maximum torque is electronically limited to 1,000 Nm in order to spare the seven-speed dual clutch transmission – despite this having already been given hardware and software reinforcements! With its unbridled power, the four-liter V8 can catapult the GT R to 100 km/h in just 2.9 seconds. The maximum speed is 360 km/h thanks to an additional control device from POSAIDON that does away with the factory Vmax limit.

The huge increase in horsepower – almost 300 hp – is largely due to the two completely new, ball-mounted high-performance turbochargers, which provide the engine with a powerful boost. POSAIDON has also fitted forged high-performance pistons and new sports air filters. Modified fuel pumps convey the high-octane gasoline even faster and more efficiently into the combustion chambers, where high-performance spark plugs produce the ignition spark. The manifolds – which lead the exhaust gas away from the engine and into the turbocharger – as well as the adjoining downpipes and sports catalytic converters were also replaced. To round it all off, the engine software was adapted to the new-and-improved hardware.

By the way, owners of “weaker” models of the AMG GT, GT S and GT C who also dream of getting such raw power for their sports car can have their wish granted: POSAIDON also offers the RS 830+ conversion for these variants.

For all other information, please contact:
POSAIDON GmbH & Co. KG Fraunhofer-Str. 13 56218 Mülheim-Kärlich, GERMANY Tel.: 0800-POSAIDON (+49 (0)800 / 76724366, free of charge from all German networks) Tel.: +49 (0)261 / 921 66 80 0 (D / AT / CH) Fax: +49 (0)261 / 921 66 80 2 Email: