McLaren 600LT

In June 2018, McLaren unveiled the top-of-the-line sports series variant online. The car, called the 600LT is based on the 570S and is the third McLaren production car to receive the longtail treatment.

Inspired by the 675LT and the F1 GTR Longtail, the body of the car has been extended by 73.7 mm (2.9 in). The car also features enhanced aerodynamic elements such as an extended front splitter and rear diffuser, new side sills, and an aero-enhancing fixed rear wing for increased downforce.

McLaren claims that 23% parts on the 600LT are new as compared to the 570S. The carbon fibre monocoque utilised in the 600LT is modified and this combined with the extensive use of carbon fibre in the roof along with the cantrails and front fenders, results in a weight saving of 96 kg (212 lb) over the 570S, with the total weight amounting to 1,247 kg (2,749 lb).

Another distinguishing feature of the 600LT is the lightweight titanium exhaust system which is mounted on top of the rear of the car which harks back to its original application in the Senna. The interior features sports bucket seats from the P1 and Alcantara trim but can be optioned with the much lighter bucket seats found in the Senna.

The 3.8-litre twin-turbocharged V8 engine utilised in the 600LT is tuned to produce a maximum power output of 600 PS (441 kW; 592 hp) (hence the 600 in the name) and 620 N⋅m (457 lb⋅ft) of torque, achieving a power-to-weight ratio of 479 PS per tonne.

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