Ducati ST4S with its all new 996cc eight-valve twin engine and the suspension has been substantially uprated, so we’d be able to concentrate on the handling improvements and superbike level of performance.
ST4S was based on the earlier ST4, which used a detuned version of the Ducati 916 engine.
Compared to the ST4, the ST4S had improved suspension and a larger engine, using the liquid-cooled Desmoquattro (four desmodromic valves) 90° V-twin engine based on the Ducati 996.
As a pure sports machine, the ST4S is a highly capable bike. The suspension is soft compared with race replicas, but it’s beautifully controlled.