Eight lucky fans had a chance to win a new Harley-Davidson Street Bob motorcycle. Watch top racers battle to win the K&N Horsepower Challenge Championship

Eight lucky fans had a chance to win a new Harley-Davidson Street Bob motorcycle. Watch top racers battle to win the K&amp;N Horsepower Challenge Championship

2010 K&N Horsepower Challenge Overview

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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2010 K&N Horsepower Challenge Overview

2010 K&N Horsepower Challenge Overview