Here are some of the pictures of the track-only McLaren 720S GT3 race car which we saw in sketches last year.
As with the road car, at the heart of the 720S GT3 is the carbon fibre MonoCage II chassis structure. More than 90 per cent of components have been changed or optimized in some way for the GT3 version, which includes bodywork, aerodynamics, suspension, revised transmission and a new braking system as well.
McLaren said that the carbon fibre and composite body panels are all unique to the GT3, while a bespoke splitter, floor assembly and dive-planes distinguish the front. The tail gets an aerodynamically-optimized GT3-specification rear wing.
As for the engine, the M840T 4.0-litre twin-turbo V8 has been enhanced to deliver an improved torque curve. The 6-speed sequential paddle gearbox is equipped with a new electronic shift actuator to increase shift-speed, usability and reliability.
An externally adjustable Salisbury-type limited slip differential is fitted. The traction control and ABS are adjustable from the cockpit.
The new braking system comprises an optimized brake caliper design and enhanced brake cooling. New rear suspension has four-way adjustable dampers and coil-over springs to provide aerodynamic optimisation for balanced handling and improved corner entry stability. Driveshafts and wheel hubs are race-oriented and a centre-lock wheel design minimizes the time required for wheel changes during pitstops. An air-jacking system is also in-built.
The cockpit has an adjustable pedal-box as well as adjustable steering wheel position, while a rear-view camera and radar system with dash display and tyre pressure monitoring system (TPMS) are available as options. The carbon-Kevlar race seat is fitted with its mountings, in accordance with 2019 FIA regulations.
FIA-approved GT3 race equipment fitted as standard includes a new roll cage, winged-headrest seat and six-point harness, roof-hatch extraction system and side-impact foam.
McLaren said that the design and development work has been undertaken within a new dedicated GT race facility in Woking, Surrey, where all new GT3 cars will be hand-assembled. The prototypes underwent more than 30,000 km of testing.
All 720S GT3s are left-hand drive, with a price tag of £440,000. First examples will be available to customer teams for entry into major GT3 championships in 2019.