With their new KS5-S package for the 2012 BMW M5, Kelleners Sport improves its status as a high-end tuner of Bavarian cars. The F10 M5 benefits form an aerodynamic package, a superb interior treatment, and of course, an engine upgrade. The last part is the most interesting bit, as Kelleners engineers managed to find an extra 100 horsepower in the M5’s twin-turbo 4.4 liter V8.

If you do that math that means Kelleners’ M5 has 660 hp. The torque has also gone up to 790 Nm. Together those figures will enable the car to hit a top speed of 330 km/h, now that the limiter has been removed. The car also gets a tweaked exhaust system with four 90mm tailpipes which enhances the acoustics as well.

Visually, and besides the cool matte paint job, the M5 gets a carbon fiber pack consisting of front spoiler, side skirts, a chunkier rear diffuser and a more pronounced rear spoiler. It makes the dignified saloon look a bit sportier, without ruining its elegance. Inside, as you’d expect from a car of this level of sportiness, there’s an abundance of carbon fiber trims. That is complemented with fancy leather upholstery and contrasting stitching, and aluminum pedals.

Last but not least, the chassis gets upgraded with a set of 20-inch wheels  – which in this case are matte lack – and coilover suspension with adjustable dampers.