Eight Horsepower Challenge contestants got a trip to 2011 Horsepower Challenge race Summit Motorsports Park in Norwalk, Ohio, chance to win Ford Explorer

2011 K&N Horsepower Challenge Finalists

Racing and product videos featuring K&N sponsored drifting, NASCAR, NHRA drag racing, rock climbing and other motorsports/motorcycle race teams.

Automotive

Racing and product videos featuring K&amp;N sponsored drifting, NASCAR, NHRA drag racing, rock climbing and other motorsports/motorcycle race teams.

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2011 K&N Horsepower Challenge Finalists

2011 K&N Horsepower Challenge Finalists