Did you think generating huge levels of downforce was easy?

McLaren was quick to reveal the Senna GTR just 12 months after it showed it in prototype guise. Despite sharing the same name with the road-going supercar, the fully-fledged race car was fitted with a rethinked body kit that focuses heavily on generating more downforce at lower speeds.

Part of this new body kit is the ginormous rear wing that dominates the rear section of the Senna GTR. And the wing itself has its own story.

What is the Senna GTR?

Here's the Interesting Story Behind the McLaren Senna GTR's Massive Rear Wing
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The short answer: a track-only beast. The long answer: a road-going McLaren Senna heavily tweaked for racing purposes via all sorts of mechanical gimmicks, including a suspension setup derived from McLaren’s GT3 race expertise and revised aerodynamics.

Here's the Interesting Story Behind the McLaren Senna GTR's Massive Rear Wing
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Suspension aside, we’re here to talk about the rear wing. Together with the other race-specific bits and bobs that decorate the 814-horsepower, 590 pound-feet of torque, V-8-powered McLaren GTR from the waist down, the wing has the task of developing over 1,000 kilos (2,204 pounds) of downforce at 15 percent lower speeds compared to the road-going Senna.

Here's the Interesting Story Behind the McLaren Senna GTR's Massive Rear Wing
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Thankfully, a short video published by McLaren tells us why the GTR’s wing is so unique. You see, besides generating lots and lots of downforce, the carbon fiber rear wing also has the task of stabilizing the car at high speeds. To tackle that, McLaren went for LMP1-style endplates that connect the wing to the rear diffuser.

Here's the Interesting Story Behind the McLaren Senna GTR's Massive Rear Wing
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Now, you might believe that with those boxes ticked, the GTR is good to go. Well, not really. McLaren also had to wrap up the whole Senna GTR package - wing included - in a way that’s digestible for the customer, so that owners understand exactly how the amount of downforce works on the race track and how it alters the race car’s performance and handling.

Here's the Interesting Story Behind the McLaren Senna GTR's Massive Rear Wing
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By the looks of it, they’ve done a pretty good job, since each of the 75 Senna GTR units built has already been accounted for.

McLaren Senna GTR Specs

Engine 4.0-liter, twin-turbo V-8
Power 814 hp
Torque 590 lb-ft
Dry weight 1,188 kilos / 2,619 lb
Transmission 7-speed SSG
Downforce over 1,000 kg / 2,204 pounds
Height 1,195 mm
Front track 1,731 mm
Rear track 1,686 mm
Brakes 390-mm carbon-ceramic discs
Tudor Rus
Assistant Content Manager - Automotive Expert - tudor@topspeed.com
Tudor’s first encounter with cars took place when he was only a child. Back then, his father brought home a Trabant 601 Kombi and a few years later, a Wartburg 353. At that time, he was too young to know how they worked and way too young to drive them, but he could see one thing – each of them had a different ethos and their own unique personality. As time went on, he started seeing that in other cars as well, and his love for the automobile was born.  Read More
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