Porsche revealed their new 911 GT3 RS 4.0, a very special sportscar which will be limited to 600 cars. This GT3 is essentially a track car, which Porsche optimized to also be road legal. The power comes from a 4.0LT six-cylinder naturally aspirated engine developing 368 kW at 8,250 rpm and 460 Nm of torque at 5,750 rpm. Porsche’s new engine for the 911 GT3 RS 4.0 has the same crankshaft as the racing car, while the forged pistons connecting rods are made from titanium.

With 125 hp/liter, the GT3 RS 4.0 has 0.2-liters of displacement and 50 hp more than the standard Porsche 911 GT3 RS. The 911 GT3 RS 4.0 will be sold with only a six-speed manual transmission.

Let’s talk performance. Porsche claims that the 911 GT3 RS 4.0 is able to lap the Nurburgring-Nordschleife in 7:27 minutes. They also say it’s able to accelerate from 0 to 62 mph (100 km/h) in 3.9 seconds and from 0 to 124 mph (200 km/h) in 12 seconds. The top speed of the Porsche 911 GT3 RS 4.0 is still kept secret.

Apart from receiving a motorsport suspension system, the 911 GT3 RS 4.0 also underwent a weight saving program. Porsche gave it carbon fiber bucket seats, bonnet and front wings, and plastic rear windows. They also says the 911 GT3 RS 4.0 has weight-optimized carpets. If you’re going this far with weight reduction, why not remove them all together? The 911 GT3 RS 4.0 weighs 1,360 kilograms when its fuel tank is full, which gives it a power to weight ratio of 2.72 kg/hp.

With the 911 GT3 RS 4.0, Porsche also uses new aerodynamics. The rear wing of the GT3 RS 4.0 is now larger, and the car features front air deflection vanes. Porsche says that at top speed, the new aero parts of the 911 GT3 RS 4.0 are able to generate as much as 190 kg of down force.