Here's some new video footage of BMW's M-badged X6 SAV on the race track. Like its X5M twin, the X6M comes with a new 4.4-liter twin - turbo V8 engine delivering a maximum output of 555 horsepower and a peak torque of 680Nm or 501-lbs/ft. Power is distributed to all four wheels through a six-speed automatic transmission with the Bavarian firm claiming that it's high-performance crossover accelerates from zero to 100km/h (62mph) in just 4.7 seconds. Hit the jump to watch the video or click here to read more about the X5M and X6M.