The snowy mountains of Maine will echo with the roar of 900-horsepower off-road Pro 4 trucks as Red Bulls incredible ‘Frozen Rush’ returns to the Sunday River Ski Resort in Maine this weekend.

The raw power of these machines will be put to the test by harsh winter conditions, as the trucks race head-to-head over jumps, around gates and down ski slopes.

Find out more on this insane event here: http://www.redbull.com/red-bull-frozen-rush

And check out last years final below!