Ключевые слова: action, activity, air, arena, bike, biker, competition, cracow, cross, cycle, dangerous, daredevil, diverse night, extreme, fast, fmx, free, freedom, helmet, high, jump, luc ackerman, male, man, motion, moto, motocross, motor, motorbike, motorcycle, power, race, racer, ride, rider, risk, speed, sport, trial, turning, wheel, world championship, xfighter,