What happens when two insanely powerful drag racing motorcycles swap their drag slicks for mud tires? We find out on Put Up or Shut Up, as host Brian Lohnes pits two of the nation's fastest dirt drag bikes against each other in a 500-foot ...See moreWhat happens when two insanely powerful drag racing motorcycles swap their drag slicks for mud tires? We find out on Put Up or Shut Up, as host Brian Lohnes pits two of the nation's fastest dirt drag bikes against each other in a 500-foot heads-up drag race. It's V-twin vs. inline-four, and both run nitromethane fuel.
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