 A horizontally placed 550 cc cylinder used a dummy connecting rod that acted like a second piston in terms of making the dynamic balance equivalent to a ninety degree Vee twin.This engineering was the key to overcoming vibration problems typically handled with either balance shafts or the incomplete solution of a crank counterweight.Pierre Terblanche designed the look of the Supermono and Claudio Domenicali and Massimo Bordi designed the frame, power plant and other unique parts of the motorcycle.