This is the mega performance Speed version of the second-generation Bentley Continental GT, and it’s the fastest production model ever to roll out from Crewe. Orders are being taken now, with deliveries to commence in October.

At the heart of the new Continental GT Speed is an up-rated version of the 6.0 litre, 48-valve, four-cam, twin turbo W12 engine. Here, the W12 makes 625 PS at 6,000 rpm and 800 Nm of torque to deliver thunderous performance. It’s a big, heavy car with every amenity you’ll ever need, but can still do 0-100 km/h in 4.2 seconds and a top speed of 329 km/h.

The Speed’s huge power is transmitted via a close-ratio, ZF eight-speed automatic transmission. Gear changes are described as “quick yet imperceptible” to ensure the perfect combination of speed and refinement. The new gearbox also makes a significant contribution to an overall 12% improvement in fuel economy and CO2 emissions. All Continental GTs get permanent AWD and a central Torsen differential.

The GT Speed gets a unique chassis tune that includes uprated steering and suspension systems and a lowered ride height over the standard Conti. The enhanced chassis is complemented by unique 21-inch Speed wheels, available in two finishes, and fitted with fat 275/35 Pirelli PZero UHP rubber.

One can spot a Speed by its dark-tinted matrix front grille and lower air intakes and the ‘rifled’ finish of the tailpipes. The hand-crafted cabin of the Speed features the Mulliner Driving Specification as standard, as well as a number of signature Speed design cues.

The Continental GT Speed will make its international debut at the 2012 Goodwood Festival of Speed later this month. Modern-day Bentley Boys Juha Kankunnen, Guy Smith and Derek Bell will pilot a pre-production unit up the Goodwood Hill twice a day.

The Continental GT was launched in Malaysia earlier this month. Click here for the report and pics.