McLaren Senna GTR

The simple brief behind the Senna GTR was to take the road-legal, 720S-based Senna and make it a track-only machine. Mission accomplished then, based on what was presented at Geneva.

With the massive front splitter and equally oversized rear diffuser, the GTR has all the aero needed to make it limpet-like on a racetrack, with listed downforce of 1,000kg – 200kg more than the existing Senna - but that’s only part of its story.

The bodywork front and rear has been pushed out to allow for a wider track, there are active aero blades at the front, while louvres at the rear are designed to maximise engine cooling and airflow over the massive rear wing.

Suspension has been altered, with a new and lower double wishbone design, while the wheels are new, too, developed specifically for circuit use and fitted with Pirelli slicks as standard.

The roadgoing Senna’s twin-turbo 4.0-litre V8 has been modified to increase maximum power from 588kW to 605kW, and while torque output hasn’t been listed, McLaren says it is up from the existing 800Nm.

The company are also claiming improvements in acceleration and top speed over the standard Senna, with outright lap times claimed to be second only to their Formula 1 car, thanks in part to the addition of a ‘race-style’ transmission.

While the GTR’s weight hasn’t been listed, it’s believed to be marginally lighter than the already anorexic 1,198kg in the road-legal Senna, thanks to the removal of a few of the road-friendly features.

Despite labelling the Senna GTR as a concept, McLaren has confirmed a production version, agreeing to make 75 examples. All of them have already been sold, despite production not starting until 2019 and a price tag rumoured to be above $2 million.