Bosozoku

Bōsōzoku ("violent running gang") is a Japanese subculture associated with motorcycle clubs and gangs.

They were first seen in the 1950s as the Japanese automobile industry expanded rapidly. The first bōsōzoku were known as kaminari-zoku ("Lightning Tribes"). It is common to see bōsōzoku groups socializing in city centers and playing loud music characterized by their lifestyle, such as The Roosters, and the Street Sliders.

Bōsōzoku motorcycle gangs share an interest in modifications (often illegal) for motorcycles, such as removing the mufflers so that more noise is produced.

Bosozoku also have a distinct style of car modification, eponymously called "bosozoku style". These cars are often modified with large exhaust pipes, bright paint, and large aero kits. Also popular are oil coolers or less commonly large turbo or supercharger intercoolers with highly polished tubing, usually mounted in a prominent position in the front bumper.