Ken Block............R.I.P.

[ZR]

Ken Block, rally car driving champion, action sports star, and DC Shoes co-founder is dead at the age of 55 following a snowmobile accident in Utah, TMZ Sports has learned.

Details surrounding the accident are not yet clear. Block's team, Hoonigan, released a statement on the tragedy ... saying, "Ken was a visionary, a pioneer and an icon. And most importantly, a father and husband."

"He will be incredibly missed."

Block was in Utah snowmobiling ... and posted pictures on Instagram earlier Monday morning.

[CON VERT]

RIP

[Zippy]

Wow

[Scrape]

RIP Ken Block.

[Ghost Rider]

oh wow!! RIP

[Snaketamer]

RIP Mr. Block...

[92redragtop]

R.I.P. Sad and shocking news.

[js197]

RIP Ken Block

[MUSTANGWOP]

RIP. Shocking news!

[Stephen06GT]

Very sad. Condolences to his family and friends.