Porsche Motorsport used the Goodwood Festival of Speed to debut its latest 911 RSR endurance racer.
While the previous RSR was based on the road going 991.1-generation 911 GT3 RS, this new model makes the switch to the 991.2 generation car.
Homologation rules mean the latest 992-generation 911 will need to receive a Weissach upgrade before it becomes eligible for GT racing.
All the news from the Goodwood Festival of Speed 2019
The RSR spent two years in development, including a 33hr endurance test at Paul Ricard circuit in March this year.
It uses a water-cooled, 4.2-litre naturally aspirated flat six that sends 515bhp to the rear wheels through a sequential six-speed gearbox. A brand new side exit exhaust system saves weight and provides an aeroynamic advantage over the previous design, with a redesigned diffuser creating even more downforce.