http://www.moto-one.com.au/performan...throttleb.html The TPS (1) is the usual Non Linear part used on all 4V Desmoquattro engines, although the early 851 models have red bodies TPS. As far as I know, they are functionally identical to the black bodied part shown. You can also see, in the above photo, that the TPS connector is at the top of the TPS (1). This is how all the P7 ECU TPS are fitted, for some reason. Later ones have the connector at the bottom. The flat section on the throttle shaft the TPS (1) locates on defines the orientation.