With such an extreme engine, never before has Ducati's unique Desmodromic system been so vitally important. With the high engine speeds at which the Superquadro operates combined with such large valves, it would be impossible for the valve’s rocker-arm to follow the steep closure profile of the cam lobe using normal valve closure springs.
The Desmo system actuates valve closure mechanically with the same method and accuracy as it opens, enabling steep cam profiles, radical cam timings, large valves and high operating speeds. This system is used on every single Ducati motorcycle and constantly proven on Ducati Corse’s World Superbikes and Desmosedici MotoGP bikes.
The New 2012 Ducati 1199 Panigale - Superbike Evolution