With the release of the 906 Paso, an air-cooled version of the engine was put into a 1988 750 Sport frame, and the resulting bike called a 1989 900 SuperSport . It weighed just 180 kg, and came with a choice between full and half fairing. In 1990 the Weber was replaced by Mikuni 38 mm CV carburettors, with equal length intakes, while the frame was given a 25 degree steering rake, a reduced 1410 mm wheelbase, a new alloy swingarm, and an adjustable 41 mm Showa upside down forks.