The Chopper Challenge celebrates the master craftsmen who create the most sought after custom motorcycles in the world. Nine builders, nine brands and the creation of nine magnificent machines. Each week, a celebrity bike builder designs and builds a sponsor-inspired, fully handcrafted, custom logo-branded motorcycle. Nine of the best custom motorcycle fabricators are challenged to build a custom motorcycle, with parts provided to them, with a theme of the bike provided by the show's producer. A winner is chosen by audience votes. Some of the best bike in the world are created. Filmed in 9 custom motorcycle shops, in 10 locations on the west coast, The Chopper Challenge is an insiders look into the world of custom motorcycle fabrication.