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-litre flat six engine, tuned to deliver a Le Mans-grade 620bhp.
That’s a whopping 60bhp more than the standard 911 GT2 — now out of production — and 8bhp 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-litre 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 tyres through a six-speed manual gearbox from Getrag and a mechanical limited-slip differential backed up by recalibrated stability control.
Carbonfibre is used for the bonnet, rear wing and seats, contributing to a 70kg weight reduction that nudges the GT2 RS down to 1370kg, 70kg less than the three-year-old 911 GT2. That gives it a power-to-weight ratio of 453bhp per tonne.
Extra downforce is provided by a 10mm higher rear wing, and an extended front airdam 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.