These guys have done it again.
When German tuning house AC Schnitzer got its hands on a BMW X6 M, it was practically a sure thing that the result would be nothing short of spectacular. After all, the X6 M already comes from the factory with an impressive 4.4-liter twin-turbo V8 that produces 567 hp and 553 lb-ft of torque. However, this just didn't seem like enough for the tuning firm. It insisted on squeezing every last drop of power from that V8 engine. All told, AC Schnitzer managed to push the X6 M's output to an astonishing 641 hp.
It's safe to assume that this was achieved by modifying the ECU like other tuners such as G-Power have done to the SUV. In addition to the horsepower increase, AC SChnitzer's X6 M kit also comes with a new front skirt, carbon-fiber rear wing, rear skirt inserts and hood vents, new tailpipes available in three different color combinations, and a sports suspension spring kit for better handling. Customers can choose from several different sets of wheels such as AC1 wheels, Type VIII racing forged rims, and Type V lightweight forged alloys. The interior comes with a full aluminum pedal set, an aluminum foot rest, and special velour floor mats. Official pricing for the complete kit wasn't released.