20 Years, 20 Firsts -- Zack Warden's backflip bikeflip to late tailwhip

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20 Years, 20 Firsts -- Zack Warden's backflip bikeflip to late tailwhip (1:17)

In the ongoing X Games "20 Years, 20 Firsts" series, X Games profiles Zack Warden, who became the first BMX pro to land a backflip bikeflip to late tailwhip over the MegaRamp in 2013. (1:17)