Ключевые слова: action, activity, air, back flip, balance, bicycle, bike, bmx, bmx rider, dirt, dirt bike, dirt jumping, enthusiastic, exercise, extreme, extreme sports, fun, happy, joy, jump, lifestyle, male, motion, no hander, outdoor, outdoors, pedals, people, person, risk, sky, speed, sport, sportive, stunt, teenage, teenager, trick, wheel,