How to build a BMX super ramp w/Sebastian Keep. For more biking visit http://win.gs/1lxRNQQ
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Go behind the scenes with Bas Keep as he lives his dream by building and then riding the biggest dirt quarter pipe ever built. Bas is joined by fellow riders and friends, Kye Forte, Dan Atherton, Ben Hennon and Ruben Alcantara as he sessions something he has dreamt about building since he was a child.
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