The standard 4.4L V8 engine also gets an upgrade thanks to its new ‘radial compressor,’ essentially a combination of a turbo and supercharger. The powerplant then undergoes a series of internal improvements, including new camshaft profiles, which improve combustion and lower engine temps. This change is the basis for being able to increase power to 530hp, while simultaneously raising torque to 725Nm.
Engineers also worked closely with transmission specialist ZF and came away with the new Alpina Sport Switch-Tronic gearbox. Shift times were dropped by 50% compared with the regular six-speed auto and, in manual mode, the transition between each gear is hardly felt: reaction time is just 1/10 of a second. The end result is a 0-100km time of 4.5 seconds for the coupe (4.8 seconds for the cabrio) and a top speed of 318km/h.
To improve handling and dynamics, Alpina added a new electronically-controlled damping system co-developed with Sachs Race Engineering. Completing the package is a set of 20in wheels housing huge 374mm brake discs up front and twin-piston Teves floating callipers.