The quickest, most powerful and most track-focused - yet road legal - Sports Series McLaren will make its dynamic world debut at the 2018 Goodwood Festival of Speed. The arrival of the new 600LT, which is built to excel on roads and race circuits alike, marks both the beginning of the next chapter in the McLaren 'Longtail' (LT) story and the setting of a new benchmark for super-sports car performance.

The new McLaren 600LT epitomises the McLaren philosophy of producing lightweight super-sports cars that deliver extreme performance and are exceptionally rewarding to drive.

With the engine management system of the 3.8-litre twin-turbocharged V8 recalibrated and top-exit exhaust system, the 600LT can call on peak power of 592bhp at 7,500rpm and a maximum torque output of 620Nm at 5,500-6,500rpm.

These outputs deliver astonishing levels of performance; 0-100km/h takes just 2.9 seconds, matching the acceleration of the revered McLaren 675LT Super Series model. 0-200km/h is achieved in a remarkable 8.2 seconds and the 600LT can continue gathering speed to a top speed of 328km/h.

Inspired by the renowned McLaren 675LT models and their iconic 'Longtail' McLaren F1 GTR racing predecessor, the 600LT has all the physical hallmarks of a true McLaren 'Longtail', including an extended front splitter, lengthened rear diffuser, fixed rear wing and elongated silhouette - in this case by 74mm compared to a McLaren 570S Coupe.

The unique bodywork optimises aerodynamic performance, working in conjunction with the flat carbon fibre floor of the 600LT to produce the 100kg of downforce at 250km/h that generates more grip and greater high-speed stability and is a significant contributor to the car's excellence on a track.

Extensive use of carbon fibre together with lightweight materials throughout the track-focused cockpit, helps the McLaren 600LT to achieve a lightest dry weight of 1,247kg and equivalent power-to-weight ratio of 474bhp/tonne.

With the optional Super-Lightweight Carbon Fibre Racing Seats developed for the McLaren Senna fitted, the 600LT weighs 100kg less than a 570S Coupe - a remarkable reduction that delivers tangible benefits in every aspect of the car's performance. McLaren 600LT buyers wanting to go to another level of weight-saving can specify the MSO Clubsport or MSO Clubsport Pro packs from McLaren Special Operations.

The MSO Clubsport Pack features the Super-Lightweight Carbon Fibre Racing Seats, a Carbon Fibre Interior Upgrade that includes extended gearshift paddles and steering wheel spokes and switch and IRIS display surrounds in the lightweight material, Carbon Fibre Roof and Cantrails, Visual Carbon Fibre Fender Louvres in gloss finish, and titanium wheel bolts.

The MSO Clubsport Pro Pack adds an MSO Defined Harness Bar and 6-Point harness for track use, in either black, blue, red or McLaren Orange. The Super-Lightweight Carbon Fibre Racing Seats are available as a stand-alone option.

Production of the 600LT Coupe will begin in October 2018 and last for around 12 months, with build slots scheduled around existing Sports and Super Series models, as well as the sell-out Senna, Senna GTR and BP23. Availability will be strictly limited, the carbon fibre body panels that require specialist tooling just one of the reasons that the new 'Longtail' will be rarer than its Sports Series brethren.