Watch more Main Event action from the 9th round of the 2013 Monster Energy Supercross in St. Louis.
Shot 100% on the HERO3® camera from http://GoPro.com.
Watch more Main Event action from the 9th round of the 2013 Monster Energy Supercross in St. Louis.
Shot 100% on the HERO3® camera from http://GoPro.com.
View replies to: GoPro HD: St. Louis SX Main Event Action 2013
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