Too good to be true! The earlier rumours that leaked about the 911 GT3 Limited Edition is genuine.

The new Porsche 911 GT3 RS 4.0 Limited Edition had finally unveils and 600 examples will be produced worldwide. It will going on sale in July 2011.

This GT3 RS 4.0 fitted with the biggest 911 engine ever, a natural aspirated 4.0-litres flat-six engine with maximum power of 500bhp at 8,250 rpm and maximum torque of 460 Nm. The forged pistons’ connecting rods are made of titanium. This amazing machine clocks 7:27 at the N¼rburgring-Nordschleife circuit. It performs from a standstill to 100 km/h in 3.9 seconds, and 0-200 km/h in less than 12 seconds. This special car comes ready with a half roll cage, seat belt harnesses, fire extinguisher, and a battery cut-off switch.

It all runs through a 6-speed manual sports transmission and even the Porsche Active Suspension Management (PASM) system has been given revised settings while the rear axle has extra ball-joints for greater adjustability.

This GT3 RS 4.0 managed to reduce the weight down to 1,360kg after its weight reduction from carbon-fibre seats, bonnet and front wing, plastic rear windows and floor mats. This car delivering a power-to-weight ratio of 363 bhp/tonne.

Inside the cabin, the red and black Alcantara-covered sports seats are stitch with the words RS 4.0â€³ in red on the headrests and carbon-fibre dashboard trim.

The price tag of this limited example will be GBP128,466 in the UK and EUR178,596 including 19% VAT across the rest of Europe.