Leaked: Full images of wild McLaren MSO HS

Images of McLaren's MSO HS have been revealed in full online by a US car blog.

Originally thought to have been called the 688HS (High Sport), the different name highlights the involvement of the British car-maker's bespoke division, McLaren Special Operations (MSO,) in the creation of the fastest McLaren Sport Series ever.

According to Jalopnik, which posted the images, the MSO HS was developed using the already-hardcore 675LT as a starting point and benefits from new air-bending techniques that were developed when creating the track-only P1 GTR.

The changes over the 675LT are claimed to be extensive.

The MSO gains a completely new front bumper assembly that includes a new splitter and more aerodynamic anti-dive planes -- all inspired by the extreme P1 GTR.

Up top is a new exposed carbon-fibre roof that now incorporates a centrally-mounted air intake.

Exposed carbon-fibre is also used in the MSO HS' side blades and lower sills.

At the rear of the car is a huge wing that borrows design elements -- once again -- from the McLaren P1 GTR program.

According to Jalopnik, the downforce-boosting wing is not fixed and can still act as an airbrake under heavy braking. The rear wing can also be adjusted automatically for road or track use.

At speeds of up to 250km/h it’s said to generate as much as 220kg of downforce -- impressive for a road car.

It's not known how much lighter the MSO HS is over a regular 675LT, but recent rumours circulating suggest the British car-maker carved 40-50kg off the kerb weight. The savings came from using an ultra-thin glass windscreen, polycarbonate windows and new composite wheels.

Under the rear bootlid, the twin-turbo 3.8-litre V8 gets slightly more power too, developing 506kW -- up from 497kW of the 675LT -- although the 700Nm torque figure remains the same but peaks lower in the rev range at just 3000rpm.

It's not been revealed how much faster the MSO HS is compared to the incredible 2.9 seconds it takes for the current 675LT to reach 100km/h. Nor is it known if all that extra downforce will prevent the MSO HS from reaching the 325km/h top speed the current 675LT is capable of.

To help future owners improve their performance on track, the MSO HS comes with McLaren Track Telemetry (MTT) that's also available as an option on the 675LT.

The system uses three cameras -- one in each of the front and rear bumpers, the other peering over the driver's shoulder. Combined with the car's in-built tracker that records lap times, sector splits and lap deltas, the system can help you work out where you're losing time compared to your rivals on a race circuit.

Originally, it was thought that just one MSO HS would be built, but new rumours suggest the British car-maker is planning to make a limited run of 25 cars.

It’s still not known how much the MSO HS will cost, but it’s thought you won't get much change from $2 million dollars to be one of the lucky 25 owners – almost four times the $620,000 McLaren charged for the sold-out 675LT Spider.