It appears that the official images for the latest, 991-generation Porsche 911 GT2 RS have leaked online ahead of its expected debut in Goodwood at the Festival of Speed. Here, we have what are the best views yet of the latest hardcore 911’s posterior.

Porsche hasn’t been absolutely specific with the GT2 RS’ output figures since its unveiling at E3 in Las Vegas earlier this month, though the marque has said its 3.8 litre twin-turbo flat-six will have more than 641 hp and 750 Nm of torque. These outputs are channeled to the rear wheels exclusively, via a dual-clutch transmission with an electronically controlled LSD.

Consequently, its performance figures are similarly fluid, though Porsche says the GT2 RS will do 0-100 km/h in under three seconds, 0-200 km/h in under nine, with a top speed of over 338 km/h. This being a GT series car, particular attention has been paid towards weight reduction. A Weissach pack equips the GT2 RS with magnesium wheels 12 kg lighter than the standard wheel set, a titanium half-cage which saves seven kg, and a carbon-fibre roof which is lighter than the magnesium item on the GT3 RS.

Tyres are of staggered diameters, with 265/35R20 and 325/30R21 front and rear Michelin Pilot Sport Cup 2 tyres. A GT3 RS-derived suspension layout and rear-axle steering system can be expected here, given its top-shelf 911 positioning, in line with previous GT2 RS form where the 997-generation car also drew from GT3 RS componentry.

GALLERY: Porsche 991 GT2 RS at E3, Las Vegas