McLaren has revealed its track-only Senna GTR hypercar in production form, a year after showing a concept version at the 2018 Geneva motor show.
The Senna GTR is described as the fastest machine to roll out of Woking this side of a Formula 1 car. It's priced at £1.1 million plus local taxes and production is capped at 75 examples, all in left-hand-drive form. All have already been sold, with customer deliveries due to commence in September.
The standard Senna's 4.0-litre twin-turbocharged V8 petrol engine is uprated in the GTR to produce 814bhp, up from 789bhp, while torque is unchanged at 590lb ft.
The final bodywork is based around a chassis with a wider front track. Made almost exclusively from carbonfibre, it features wider front wings, a larger front splitter, a bespoke rear diffuser and repositioned active rear wing. The result is a full 1000kg of downforce, up 200kg over the existing Senna. Under braking, the car is also capable of 3g of decelerative force – 20% more than the Senna.
McLaren says the Senna GTR concept will out-accelerate the standard Senna, but it has yet to confirm straight-line performance figures. The regular Senna can charge from 0-62mph in 2.8sec and 0-124mph in 6.8sec.
With no road regulations or pedestrian safety tests to worry about, McLaren’s aerodynamicists have extracted a further 200kg of potential downforce from the Senna’s body. They’ve gently resculpted its panels, added an enormous front splitter and bolted on a rear diffuser that shames those of Le Mans GTE racers. Add the Senna’s active rear wing and downforce peaks at 1000kg – 400kg more than the P1 GTR's.
To handle these enormous high-speed loads, the Senna GTR uses revised double-wishbone suspension and Pirelli slick tyres. A carbonfibre Monocage III skeleton remains at the car’s core, but the GTR is 10kg lighter than the 1198kg Senna when dry, because it can do away with road-specific kit such as airbags, a handbrake and an exhaust muffler and make use of lightweight materials such as plexiglass.
