German luxury carmaker Porsche has announced a limited 600 vehicles special edition of the 911 GT3 RS 4.0, bringing together in a road car all the attributes that have made the 911 GT3 a serial winner on the race track. The new model purveys thoroughbred motor sport technology to its innermost core. The flat engine’s crankshaft has been lifted unchanged from the 911 GT3 RSR racing car’s six-cylinder engine and the forged pistons’ connecting rods are fashioned from titanium. The four-litre displacement sports engine, the biggest 911 model line engine ever, is also the most powerful naturally aspirated engine with 125hp per litre. It achieves its maximum power of 500hp at 8,250 revs per minute. The engine delivers its maximum torque of 460 Newton metres at 5,750 rpm.The 911 GT3 4.0, available exclusively with a six-speed sports transmission, sprints to 100km/h from a standing start in 3.9 seconds, its gearing designed for the racing circuit, taking it to the 200km/h mark in under 12 seconds.The 911 GT3 RS 4.0’s outstanding driving dynamics are the fruit of meticulously co-ordinated details. In addition to using the suspension components typically encountered in motor racing, weight reduction is also of supreme importance. Equipped as standard with light weight components such as bucket seats, bonnet and front wings made of carbon fibre, plastic rear windows and weight-optimised carpets, the two-seater’s ready-for-road weight is a mere 1,360kg with a full tank of fuel. At 2.72 kg/hp, the 911 GT3 RS 4.0’s power-to-weight ratio thereby dips below the threshold of 3kg per horsepower. The limited edition 911 is painted white as standard and emphasises its proximity to motor racing by its dynamic appearance. Trademark characteristics are the wide track, the low vehicle position, the large rear wing with adapted side plates, the typical central twin tailpipe and the aerodynamically optimised body. The lateral front air deflection vanes, so-called flics, making their first appearance on a production Porsche, testify to the aerodynamic precision engineering. They create increased down force on the front axle and together with the steeply inclined rear wing bring the vehicle into aerodynamic equilibrium. As a result, at top speed, aerodynamic forces exert an additional 190kg pushing the 911 GT3 RS 4.0 onto the road. The market launch of the new Porsche 911 GT3 RS 4.0 begins in the GCC markets in July 2011. The basic retail price starts at $185,847.