Egli founded his motorcycle speed shop in 1965. One of his first vehicles included a Vincent Black Shadow, with what was to become his signature large diameter central tube which won a 1968 motorcycle hill climb championship. He went on to become famous for his frame designs for the large Japanese motorcycle engines of the 1970s, especially the Honda CB750 Four and the first big four-stroke motorcycles of Kawasaki. His large diameter frame design later incorporated a honeycomb internal section which was suggested by a visiting Australian in 1979. This suggestion greatly increased the rigidity of the frame. Today, he builds frames for the Yamaha V-Max and others.
Egli took the Japanese engines, enhanced them for increased power, then placed them into his own frame designs. The main backbone pipe of his designs are about 12 cm in diameter and they use straight pipes exclusively, a design taken from the Vincent motorcycle. Egli motorcycles have a devoted community that come together at annual meetings. From Wiki-Pedia
He created his own frame design to enhance the handling abilities of the Vincent and came up with something truly wonderful.