Ключевые слова: acrobatic, action, activity, adrenalin, air, background, bicycle, bike, biker, black, bmx, competition, cycle, cyclist, danger, design, extreme, fly, freestyle, grunge, helmet, illustration, isolated, jump, leisure, lifestyle, lines, male, man, one, people, person, ride, rider, risk, silhouette, speed, sport, street, stunt, teen, teenage, teenager, trick, urban, vector, vehicle, wheel, white, young,