McLaren has confirmed to be working on a track-only version of the Senna, but you can’t buy them because all 75 units have already been allocated.
The Senna GTR’s carbon fibre body will get wider fenders, a larger front splitter and rear diffuser, and repositioned active rear wing. These last two elements combine to improve aero-efficiency by ‘coupling’ the wing to the airflow from the diffuser, which apparently enables greater – and more accessible – downforce at lower speeds.
McLaren says that the car will generate at least 1,000 kg (2,205 lbs) of downforce. Furthermore, optimised aerodynamic performance in yaw improves cornering stability, while reduction in pitch sensitivity leads to even greater braking stability.
The interiors will have all airbags removed, as well as the infotainment central screen and folding driver display found in the road car, while a new, race-style steering wheel with integrated gearshift controls replaces the road-legal component. Air conditioning is an exception to the rule of absolute minimalism – remaining standard-fit. The radar-assisted rear collision avoidance system is also standard.
The final weight of the vehicle is still to be declared, but the GTR will weigh less than the road-going Senna. The 4.0-litre twin-turbocharged V8 will produce 25 PS more, taking the total output to 825 PS or about 813 bhp. Torque will be the same 800 Nm (590 lb-ft).
The car has conventional double wishbone suspension, with the geometry, springs, dampers and anti-roll bars having been developed from the system engineered for McLaren’s GT3 customer racing programme. Pirelli slick race tyres maximize dynamic performance and the braking system – introduced in the Senna road car and also race-derived – is projected to deliver 20% greater maximum deceleration, with resulting forces in excess of 3g.
Each unit will carry a price tag of £1.1 million plus taxes.
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