Mavic 801 rear derailleur first generation and Mavic 820 downtube shifters

Produced from the mid 70's to mid 80's these French-made Mavic 801 rear derailleurs are quite rare in a world now dominated by Japanese, Italian and Taiwanese shifters. The Mavic 801 features hollow titanium bolts and pivots, and a very light aluminium cage and parallelogram. It is also completely dismantleable.