French roadracer Eric Offenstadt developed an unusual frame and front end for his GP racers towards the end of the 1970s.
The autoevolution.com site includes a January 1972 Moto-Journal article about Offenstadt. The introduction reads,
"Project Geco is the brain child of Eric Pepe Offenstadt, who leads a small, but highly enthusiastic, development team. Geco is also the result of countless years of painstaking research in the motorcycle suspension industry, blended with automotive experience gained in the high-performance Formula 2 and Formula 3 racing. Geco is the sport bike that changes architecture."
Articles about Offenstadt and the remarkable 500cc HO twin may be found at the following address:
Offenstadt is also behind the Geco motorcycle. This remarkable machine may be viewed here: progecomoto.fr