Motocross star Jayden "Jayo" Archer -- a two-time X Games medalist and the first person to land a triple backflip in competition -- died this week after crashing during trick practice in Australia.
He was just 27 years old.
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Archer -- a member of the renowned action sports group Nitro Circus -- was reportedly attempting to recreate his famed upside-down move during drills in Melbourne on Wednesday ... when he tragically lost control of his bike.
Travis Pastrana, Nitro Circus' co-founder, said in a statement to ESPN he was devastated to learn of the news.