The title of this document refers to the later Dia-Compe Gran Compe Zero RD801, but the drawings appear to show the earlier Dia-Compe Gran Compe Zero RD800.

• Publisher: Dia-Compe
• Country: Japan, manufactured in Taiwan
• Date: 2017?
• Derailleur brands: Dia-Compe, manufactured by microSHIFT
• Derailleurs: Dia-Compe Gran Compe Zero RD801