For the 1975 model year Shimano’s annual catalogue is much more grown up, with ten whole pages devoted to Dura-Ace - and featuring tasteful pastel colours to boot. This catalogue also introduced the marvellous Shimano 600 (the great grand father of Ultegra and Deore XT) and the catastrophic Positron (the mother of all mechanics’ nightmares).

• Publisher: Shimano
• Country: Japan
• Date: December 1974
• Derailleur brands: Shimano
• Derailleurs: too numerous to mention - see individual pages