Ключевые слова: acceleration, action, active, arena, bike, championship, competition, curve, danger, dangerous, debris, dirt, dust, engine, event, extreme, extremesport, fast, four, friends, front, glasses, goggels, gravel, group, helmet, machine, monster, motion, motor, motorbike, motorcycle, motorsport, power, race, racer, rider, riders, riding, speed, speedway, speedwaybike, sport, stockholm, sweden, tilted, track, uniform, wheel,