TILLETT T12 Is exactly the same as the prototype T11, The only difference being the T12 is injection molded rather than hand formed as the T11 was. The T12 performs the same but production costs are minimized. The T12 creates a very low head position, giving a low centre of gravity and better aerodynamics which helps the taller drivers. The shape and size is the same as the T5 Reverse only with a more laid down seating angle. This seat has been developed because drivers are getting taller. The high centre of gravity can cause handling problems when the tracks are grippy and covered in rubber. T11 is the 2004 World Champion as used by Davide Fore in his Tonykart Vortex