Watch: Relentless Pursuit – BMXer Turns to Slopestyle MTB

“Relentless Pursuit” is a documentary filmed by Spencer Hehl about David Lieb, an adrenaline junkie and adventure seeker who has turned his love into a career. Seen as a rising BMX star David decided it was time to change, making mountain biking his new passion. Now this young man is on his way to becoming one of the best slopestyle athletes.