After the release of DURA-ACE, the flagship of racing components, SHIMANO 600 was developed with the policy of “Creating components that anyone can use.” Thanks to SHIMANO 600, Shimano components became popular among not only top racers, but also more general riders. The first model was available with two specifications: for racing and touring. This series evolved into today’s SHIMANO ULTEGRA, which is loved by many riders who earnestly enjoy road biking from racing to sports riding.