The newly established German tuners at Prototyp Production have developed an upgrade kit for the Porsche 911 Turbo S (991).

Works started in the engine department where the six-cylinder 3.8-liter direct-injection turbocharged engine has been massaged to deliver 604 PS (444 kW) and 820 Nm (605 lb-ft) of torque, representing a significant increase over the stock 911 Turbo S which is rated at 560 PS (412 kW) and 700 Nm (750 Nm with overboost).

They replaced stock wheels with a set of NEMESIS Limited Edition 50 measuring 21 inches and wrapped around in Michelin Pilot Super Sport 245/30 ZR21 front and 305/25 ZR21 rear tires. There's also a custom stainless steel exhaust system with two valves and 200 cells sports cats. Images of the interior are not available at this point, but Prototyp Production says they used several matte carbon accents to spice up the cabin.

Gallery: Porsche 911 Turbo S upgraded to 604 PS by Prototyp Production

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