You probably remember reading about the Porsche 992-based 911 GT3 R last year. It packed a 4.2L water-cooled six-cylinder boxer engine with 416 kW (565 metric hp) on tap, which is plenty for a car with a base weight of 1,250 kg (2,756 lbs). But if anything we’ve learned from the world of sports cars and hypercars, there’s no such thing as too much power. And so, Porsche showcased the 911 GT3 R Rennsport at the Rennsport Reunion 7, recently held at WeatherTech Raceway Laguna Seca.
Porsche is gonna build only 77 units, and of course, all of ’em have already been spoken for. As the name suggests, the 911 GT3 R Rennsport is based on the 911 GT3 R of the current 992 generation. The design of the 911 GT3 R Rennsport was led by Grant Larson and Thorsten Klein from the Style Porsche team. Visually, the Rennsport rendition looks a lot cleaner than the busy-looking 911 GT3 R, thanks to the redesigned body and also, in part to the livery. Porsche says that only the bonnet and the roof were taken from the standard GT3 R and the rest of the body elements have been changed. Notice that the conventional exterior mirrors have been replaced by a digital equivalent.
And, one of the other noticeable differences is, of course, the gigantic rear wing, inspired by that of the legendary Brumos Porsche 935/77, with which Peter Gregg (U.S.), together with the Toine Hezemans (NL) and the Rolf Stommelen (DE), took the 7th overall victory for a Porsche at the 24 Hours of Daytona in 1978. At the rear, you can also notice the illuminated Porsche lettering underneath the light bar. As in the 911 GT3 R, the twin tailpipes remain in the center.
The track toy rides on exclusive 18-inch BBS rims, wrapped with specially-developed Michelin racing tyres. These tyres feature a new compound tread that is claimed to offer an improved warm-up and drivability compared with the Michelin Pilot Sport M S9 (S9M). The aluminum monobloc racing brake system from AP has been given brake pads with titanium backing plates; they are claimed to reduce the total unsprung masses by approximately a kilogram (2.2 lbs). The 5-way adjustable racing shock absorbers from KW have a blow-off function. The motorsport division delivers the car with a specific basic set-up, but further adjustments to the suspension can be made using shims.
Porsche is offering the new collector’s item ex-works with a bodyshell painted in Agate Grey Metallic and bodywork in pure carbon. Buyers get to choose from 7 colors including Star Ruby and Signal Orange. Customization will also be available.
Inside, there’s no air conditioning to save weight, but the driver is probably gonna be happy that the ambient lighting adopts the theme of the color-adjustable headlights. All safety features comply with FIA standards. The new FT3.5 safety tank with a capacity of 117 litres is a kilogram lighter than the previous version.
The 4.2L (4,194 cc) water-cooled six-cylinder boxer engine revs up to 9,400 rpm in this application and delivers a power output of 456 kW or 620 metric hp, which is 55 metric hp more than in the GT3 R. The engine can run on E25 as well. The 6-speed sequential gearbox gets some minor modifications. The ratio of the 4th, 5th and 6th forward gears corresponds to the Daytona set-up of the GT3 racing car. In 6th gear, with an engine speed of 9,000 rpm, it gives the car a top speed that is around 20 km/h (12.4 mph) higher than the shorter FIA homologated gear ratio of the GT3 R, the company added.
The kerb weight target is 1,240 kg (2,734 lbs), which is 10 kg (22 lbs) lighter than the GT3 R. The power-to-weight ratio would be 0.49 hp/kg.