Aston Martin has unveiled a track-only version of the Valkyrie hypercar that Red Bull Racing's Adrian Newey has helped design.
The new Aston Valkyrie AMR Pro, which takes its name from the Prodrive-run Aston Martin Racing squad that competes in the World Endurance Championship, is more powerful and lighter than the road car, as well as incorporating revised aerodynamics.
The track Valkyrie also runs on Michelin racing tyres and carbon brakes inspired by WEC and Formula 1 technology respectively.
Newey, who is brainchild of the Valkyrie project and was responsible for performance-related development of the car, said: "While it is endowed with extraordinary performance, it has always been vitally important to me that the Valkyrie functions well as a true road car, and that naturally comes with some constraints.
"With the track-only Valkyrie AMR Pro we have the freedom to create an extreme evolution that makes no such concessions."
Aston has yet to reveal an exact specification of the track Valkyrie, but it has stated that the hybrid machine powered by a 6.5 Cosworth V12 will have a top speed of close to 250mph and be able to sustain cornering forces in excess of 3.3g.
The car has been built for track days rather than a specific racing category, although owners will not be prevented from racing them.
The total run of 25 Valkyrie AMR Pro track cars has already been pre sold, along with the 150 road-going cars.
Production of road and track Valkyries will start at the end of next year before deliveries begin in 2019.