By April 1973 Dura-Ace had become a real groupset. You can tell because it had its own typeface, its own signature packaging and this - its very own brochure replete with atmospheric shots of nothing very much.

• Publisher: Shimano
• Country: Japan
• Date: April 1973
• Derailleur brands: Shimano
• Derailleurs: Shimano Crane (D501), Shimano Crane GS black (D511)