Founded in 1941 as a general roller-chain manufacturer, Enuma Chain is headquartered in Kaga, Japan, an industrial area near Komatsu on Japan's west coast. Long a technological innovator, in 1974 Enuma introduced the world's first sealed O-ring chain, a design that dramatically extended chain life by inhibiting lubricant loss. This breakthrough quickly became the standard throughout the motorcycle industry, and led to today's high-tech EK Quadra-X Ring chains that further prolong durability while reducing friction.