Machines carried out under the system PERFECT GEOMETRY get an optimal biomechanical regardless the height of the person. Its design is based on a map of movement ‘points for 6 different heights of users: 1.50, 1.60, 1.70, 1.80, 1.90 and 2.00 meters, obtaining the perfect bike. The incline of the seat, handlebars and pedalier match up with the standard sizes in a conventional bike. In this way, not only eliminate we unnecessary regulation systems, but we avoid that the customer adjusts this fittings in a wrong way, causing an inadequate posture with risk of injures.