Seemingly not satisfied with 625 PS and 800 Nm of torque, the second-gen Bentley Continental GT Speed has taken an extra dose of steroids, such that its 6.0 litre twin-turbo W12 now develops 635 PS at 6,000 rpm and 820 Nm of twist at 1,700 rpm.

The 2012 GT Speed was already the fastest production Bentley ever (and its drop-top sister the world’s fastest four-seater convertible), covering the century sprint in 4.2 seconds on its way to a 329 km/h top speed (convertible 4.4 seconds, 325 km/h). This one, however, gets from 0-100 km/h in four seconds flat before topping out at 331 km/h, or 327 km/h for the convertible version.

Resuming their duties are the eight-speed ZF auto with Quickshift, Block Shifting and shift paddles, ‘Speed’ lowered and stiffened suspension, AWD and Continuous Damping Control.

Set to appear in Geneva next month, the updated GT Speed is differentiated from the 2012 model by a front splitter, side skirts and a rear diffuser – all discreetly-styled.

A horizontal bar is added to each end of the front lower intake, and a dark finish has been applied to the headlamps, tail lamps and 21-inch Speed wheels. Behind the huge alloys now are red brake callipers, and on the front wings sit stylised ‘Speed’ badges. A new Candy Red body colour is offered.

The plush cabin features a new Speed-exclusive colour scheme – contrasting accent stripes and stitching jazz up a dark interior. ‘Speed’ lettering adorns the passenger side dash panel and all headrests.

Crewe has also announced that for 2014, seven distinct customisation packages will be offered across the Continental range, namely Premier, Interior Style, GT Classic, All-Seasons, Mulliner Driving, GT V8 S Sport and Classic Mulliner Styling Specifications. These offer anything from a Naim sound system and carbon-ceramic brakes to in-seat neck warmers for convertible models.

Read our review of the 2012 Bentley Continental GT Speed here.

2014 Bentley Continental GT Speed Coupe

2014 Bentley Continental GT Speed Convertible