Sport with stunt riding, informally

• Extreme sport, for short
• Cyclists' sport, for short
• ___ bike
• Wee racing bicycle
• Brand of racing bikes
• Cycle sport

Wikipedia Word definitions in Wikipedia
BMX may refer to: Bicycle motocross , a sport of racing on bicycles on motocross style tracks BMX bike , a bicycle used for casual use and sport, and designed mainly for dirt and motocross cycling Big Mountain Air Force Station (IATA: BMX), a military use ...