What can you build with a grand and a month?

The Dirtbag Challenge is an event that takes place every year in San Francisco.

It's a grass roots, low budget chopper build-off and party, and besides being a contest, it's also a concept: if you want a bad-ass motorcycle, then go and build yourself a bad-ass motorcycle.

The event is popular for its burgers, broads, beer, and burnouts.

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