We've seen some insane stuff from the Nitro Circus crew over the years. Double backflips in wheelchairs, mega-ramp riding in kid's tricycles and all manner of crazy crap.

But we've never seen anything quite as mental as this. A four-person backflip on one motorbike? And correct me if I'm wrong, but doesn't Travis say there that the guys are volunteers from the crowd?

You wouldn't catch me doing that, not in a million years.

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