Porsche has revealed its most powerful road-going 911 to date: the GT2 RS.
To be built in a limited run of just 500, the new rear-wheel-drive road racer is powered by the latest evolution of its twin-turbo, 3.6-liter, flat-six engine, tuned to deliver a Le Mans-grade 620hp. That's a whopping 60hp more than the standard 911 GT2 – now out of production – and 8hp beyond the German car maker's previous most powerful road car, the V10-powered Carrera GT.
The so-called Metzger engine – named after the motorsport engineer responsible for its original design – eschews the direct injection of Porsche's newer 3.8-liter engines for an older, sequential injection system. It also uses the latest Borg Warner turbochargers, producing 1.6bar of pressure instead of the old GT2's 1.4bar.
Drive is fed to lightweight 19in forged alloy rear wheels shod with 335/30-profile tires through a 6-speed manual gearbox from Getrag and a mechanical limited-slip differential backed up by re-calibrated stability control.
Carbon fiber is used for the hood, rear wing and seats, contributing to a 154lb weight reduction that nudges the GT2 RS down to 3,020lbs, 150lbs less than the three-year-old 911 GT2. That gives it a power-to-weight ratio of 453hp per ton. Extra downforce is provided by a 0.4in higher rear wing, and an extended front air dam covers the wider front track.
Although it's not the fastest-accelerating 911 of all time, the rear-drive GT2 RS's performance is still extraordinary. Porsche claims 0-62mph in 3.5sec (0.2sec faster than the 911 GT2), 0-124mph in 9.8sec and 0-186mph in 28.9sec. With a traditional 3.44:1 final drive, the GT2 RS is geared to hit 205mph at the red line in sixth gear.
A unique chassis setup that includes Porsche Active Suspension Management (PASM), with variable damping control, also provides added agility. As an indication of the car's overall ability, Porsche claims the 911 GT2 RS has lapped the 13-mile Nurburgring Nordschleife in just 7m18sec – 19sec faster than the new 530hp 911 Turbo S – during recent testing. That time would make the RS the quickest series production car on standard road tires at the legendary German circuit.
The 911 GT2 RS's public unveiling will be at the Moscow Auto Fair in August. But Porsche projects its limited-volume production run will be accounted for before then. It won't be cheap, either. At $245,000, the GT2 RS will cost around $50,000 more than a regular GT2.