Ducati 1098 1198 Showa 2006-2012 Mupo Fork Cartridge Kit K911 Ø25mm Pistons NewREF#C05DUC023 *Fits only 1098 1198 with Showa forks* This new cartridge has been developed thanks to the experience acquired during the races supported by us. This cartridge has a K911 system. it' s a new mechanic system that allows varying the spring elastic constant in the fork without physical replacement of the spring. The difference between the other similar cartridge (C06) is the pistons diameters 25 mm instead 30 mm. Thi kind of cartridge