Motorsport legend Ken Block has died in a snowmobile accident at the age of 55.

The American had been a competitive rally driver since 2005 and competed in other action sports such as motocross, snowboarding and skateboarding.

Block competed in series such as Rally America and Global Rallycross, before earning further fame with his YouTube video series in which he performed daring stunts.

He also co-founded the skate-wear clothing brand DC Shoes in 1984, which he later sold in 2004.

Hoonigan Industries, another clothing company he owned, announced Block's death on their social media channels on Monday.

"It's with deepest regrets that we can confirm that Ken Block passed away in a snowmobile accident today," the statement read. 

"Ken was a visionary, a pioneer and an icon. And most importantly, a father and husband. He will be incredibly missed."

A statement from Wasatch County Sheriff's Office confirmed Block was riding a snowmobile up a steep slope when the vehicle upended and landed on top of him.

Block was pronounced deceased at the scene from injuries sustained in the accident.

FIA president Mohammed Ben Sulayem was among those to pay tribute to Block.

"I am deeply saddened to learn of the passing of my friend Ken Block," Ben Sulayem said.  "An inspiration for us all and a true gentleman of our sport."