In a contest for the biggest rear wing of 2019, McLaren might have already won.

A year after its Geneva auto show debut, McLaren has finally revealed the production version of its Senna GTR.

McLaren claims that the Senna GTR is the company’s fastest ever vehicle, aside from its Formula One team racing cars. Despite not being road legal, the Senna GTR will have substantial appeal to gentleman racers who have the time and budget to attend select track days at their leisure.

The GTR car has a 34 mm lower roofline than its road-going Senna sibling and features a substantially wider track, 77 mm broader on the front axle and the rear wheels are spaced 68 mm further apart.

That lower and wider chassis also gains a bodyshell which has phenomenal aerodynamic properties, the most noticeable being an enormous rear wing. McLaren claims the Senna GTR’s rear aerofoil is good for more than 1 000 kg of downforce at 250 kph.

Engineers have managed to boost a bit more power from the 4-litre twin-turbocharged V8. Peak power increases by 18 kW over a ‘normal’ Senna, with the GTR car producing 606 kW and 800 Nm. One of the few exterior styling changes made from the original Senna GTR concept to this production version has been the rerouting of its exhaust – which now exits rearward, instead of through side ports, just ahead of the rear wheels.

McLaren has committed to building only 75 Senna GTRs, priced at an estimated R20m a piece. Each one promises to be the ultimate track day tool, featuring intuitive stability control and driver aids, which should help owners go faster, instead of anaesthetising the experience.

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