Cumulative SHMFs in units of the virial mass for subhaloes with a cluster centric distance < 0.15 R_vir. The leftmost panel focus on DMO run with collisionless DM and rare and frequent SIDM; the other panels refer to FP simulations and show the results for different mass components: from left to right, DM, stellar matter and total matter. Colours and line styles are as in Fig. 3. The panels in the bottom row show the ratio between the SHMFs in the SIDM models and the one for the collisionless DM model. The shaded area corresponds to one standard deviation of the mean value.