The McLaren 720S GT3X is a high-performance, track-only evolution of the 720S GT3 race car, designed to push the limits of McLaren's engineering without being constrained by racing regulations. It is powered by a 4.0-liter twin-turbocharged V8 engine that produces up to 750 horsepower, thanks to a unique calibration and a push-to-pass system for temporary power boosts. The GT3X builds upon the race-spec 720S GT3 with a focus on delivering even greater performance, combining advanced aerodynamics with an ultralight carbon fiber MonoCage II chassis for exceptional handling and speed.

The car features an enhanced aerodynamic package with a prominent rear wing, aggressive front splitter, and rear diffuser, providing increased downforce and stability at high speeds. Inside, the cockpit is stripped to essentials, fitted with a single racing seat as standard, although a second seat can be optionally added for a passenger. It includes a roll cage, six-point harnesses, and other safety features that meet motorsport standards.

The 720S GT3X maintains McLaren's signature design language, blending function with form, and provides unparalleled driving dynamics for private track enthusiasts. Unlike homologated race cars, the GT3X offers more freedom in its design and power output, making it a unique offering for those seeking a pure track experience.