The Fiercer Version of Diablo Rosso™ IV. Structures: DIABLO ROSSO™ IV CORSA features the same innovative structures of DIABLO ROSSO™ IV. Pirelli stiff chord technology: The stiffer chords feature a lower end-count and leave wide room for the compound, enhancing tire conformability and contact feeling with the road. This allows full control even when pushing hard. Tuned pretension ratio between the 0° chords and the plies: The differentiated structural stiffness across the profile delivers outstanding riding experience. Contours: DIABLO ROSSO™ IV CORSA features the same innovative contours of DIABLO ROSSO™ IV, derived from Pirelli experience in the World Superbike Championship.