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The German carmaker also says it is the most powerful 911 so far homologated for road use.
Through its striking design with large air intakes at the front and the rear wing so characteristic of this very special model, the new 911 GT2 expresses the power and performance potential of the fastest-yet 911.
It features rear-wheel drive and a manual six-speed gearbox and goes from 0-100 km/h in 3.7 seconds and top speed is 329 km/h.
Porsche claims an average fuel consumption of just 12.5 litres/100 km.
The power unit of the GT2 is based on the six-cylinder boxer engine of the 911 Turbo, with air supply by two exhaust gas turbochargers featuring variable turbine geometry (VTG).
The 3.6-litre boxer engine has an output of 390 kW at 6 500 r/min, with maximum torque of 680 Nm maintained consistently between 2 200 and 4 500 r/min.
With its unladen weight of 1 440 kg the 911 GT2 offers a power-to-weight ratio of just 2.72 per horsepower.
Turbo power
The increase in engine power is the result of two turbochargers with a larger compressor wheel and a flow-optimised turbine housing raising turbocharger pressure to an even higher level.
And for the first time Porsche's engineers have combined the turbocharged engine with an expansion-type intake manifold.
The expansion intake manifold uses the principle of oscillating air in the intake manifold during the cooler expansion phase, keeping the temperature of the fuel/air mixture lower than in the 911 Turbo.
This, in turn, means an increase in all-round efficiency, with fuel consumption down by up to 15% under full load despite the increase in engine output.
Weight saving
The 911 GT2 offers new achievements also in terms of emission management and control: This is the first Porsche homologated for the road to feature a rear silencer and tailpipes made of titanium as standard equipment.
This reduces weight by about 50% versus a comparable component made of stainless steel to just 9 kg.
The new 911 GT2 comes as standard with PCCB brakes featuring brake discs made of a composite carbon fibre/ceramic compound ensuring maximum stopping power.
A further advantage is that PCCB brakes reduce the weight of the unsprung masses versus comparable grey cast-iron discs by approximately 20 kg.
Yet another feature fitted as standard is the electronically controlled PASM Porsche Active Suspension Management. (PASM).
The GT2 comes on 19-inch light-alloy wheels running at the front on 235/35 ZR 19, at the rear on 325/30 ZR 19 sports tyres.
