The new 650S Sprint is being shown alongside other McLaren models including the P1 GTR
The McLaren 650S Sprint costs £198,000
The 650S also shares features with the 650S GT3 racer, including that car's racing fuel tank
19-inch wheels are shod in Pirelli rubber
The 650S Sprint is expected to improve on the standard car's 0-60mph sprint time of 3.0 seconds
The car is presented in racing livery
The Sprint keeps the standard 650S' 641bhp twin-turbocharged V8 but gets bespoke tuning for improved responses
New lightweight racing seats feature inside, complete with six-point harnesses
The 650S features the reverse colours of the 650S GT3 race car
Options on the 650S Sprint include the addition of a carbonfibre rear wing
The 650S features a lowered ride height and recalibrated dampers and braking systems
A track-only version of the McLaren 650S coupé, called the 650S Sprint, has made its debut at the Pebble Beach Concours in the US.
It benefits from a host of revisions that McLaren states allows the car to "deliver a more engaging GT racing experience, without losing any of the refinement and balance found in the road car".
Among the changes are recalibrated engine and transmission control systems, which are reputed to offer a more responsive and involving nature.
The Sprint otherwise retains the 650S' twin-turbocharged 3.8-litre V8, which produces 641bhp and 500lb ft, and power is sent to the rear wheels by the same seven-speed dual-clutch automatic transmission. In standard form this helps the 650S sprint from 0-60mph in 3.0sec.
Other developments include an revised Brake Steer system – which can brake the inside rear wheel for better cornering – and a new race configuration for McLaren's ProActive Chassis Control system.
Further upgrades include retuned active aerodynamics, a lowered ride height, recalibrated adaptive dampers, 19-inch centre-locking wheels shod with Pirelli slick or wet tyres, an onboard air jacking system and improved brakes.
Inside, the McLaren's stripped-out cabin features an FIA-approved rollcage, integrated fire extinguisher and a new lightweight carbonfibre racing seat with six-point harness. Though luxuries inside are few, air conditioning has been retained.
McLaren says the 650S Sprint also shares features with the 650S GT3 racer, which made its debut at the Goodwood Festival of Speed this summer, including the GT3's larger motorsport-derived fuel tank, upgraded radiator and new front wing louvres.
Customers can also specify a 'computational fluid dynamics' package, which adds more aerodynamic bodywork including a carbonfibre rear wing and new front splitter. Other options include a passenger seat with harness and a lightweight polycarbonate windscreen.
The McLaren 650S Sprint is presented at Pebble Beach in racing livery.
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