Family spokeswoman Chelsea Lawson released a statement announcing Moore's death, which occurred Thursday morning. The family declined to release any other details of his injuries.
It is the first death in the 17 years of the Winter X Games.
Moore suffered a concussion and was taken off the course during the snowmobile freestyle final at Buttermilk Mountain in Aspen, Colo., on Jan. 24.
While he was being evaluated, Moore was found to have bleeding on his heart and was airlifted to St. Mary's Hospital in Grand Junction. He had emergency surgery there on Friday. A family spokeswoman announced on Sunday that he'd suffered a “brain complication.”
Moore’s fatal accident took place in the freestyle competition when he under rotated a backflip. He was thrown from his sled, which then landed atop him.
The 25-year-old was a Texas native who grew up riding all-terrain vehicles before switching to snowmobiles a couple years ago.
Incredibly sad news.
[H/T: USA Today Sports]