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With 666 hp pushing just 2,711 lbs, McLaren’s 675LT appeases both Newton and the Devil

Power means nothing if it has half a continent to lug around, so with its latest supercar, McLaren took Newton’s second law of motion to heart.

At just 2,711 pounds dry, the 666-horsepower 675LT is “the lightest, most-driver focused, most exclusive series-production McLaren supercar ever built.”

The series in question is the British brand’s Super Series, which sits above the entry-level Sport Series in the McLaren lineup. The 675LT exists alongside the 650S (from which it is based) and the Asia-only 625C under the Super Series banner.

Currently being displayed at the 2015 Geneva Motor Show, the featherweight supercar boasts some series performance figures. Its 3.8-liter, twin-turbo V8 channels 516 pound-feet of torque through a seven-speed dual clutch to rocket the LT to 60 mph in just 2.9 seconds, 124 mph in 7.9 seconds, and eventually to a top speed of 205 mph.

Those specs are near equal to the 650S, which is around 220-lbs heavier and slightly less powerful, but there is a law of diminishing returns once you reach this insane level of performance. More importantly, straight-line acceleration isn’t the focus here; it’s track prowess.

McLaren 675LT

To accomplish this, the 675LT, a tribute to the ‘Longtail’ Formula 1 cars of he ‘90s, boasts a bevy of space-age components and technology. The front and rear tracks have been widened by 20mm, for instance, and the springs have been stiffened all around. The car creates 40-percent more downforce as well, thanks to revised bodywork and a new carbon fiber air brake. The steering is quicker too. In fact, compared to the 650S, a third of the parts are either new or modified.

It is, however, road-legal, so it boasts a multimedia system, air conditioning, and even some Alcantara upholstery covering up the metal bits.

Related: McLaren goes from hyper to ludicrous with the track-only McLaren P1 GTR

The supercar, with its striking titanium exhaust (the pipes turn blue!) is available to order now for £259,500 ($398,929). Only 500 examples will be made, with deliveries commencing this July.

Watch the 675LT’s debut video below.