Great, good mood!
I would appreciate information about my query.
I'll try to be able to express myself properly in your lenguage.
The broken part is the positioner that holds the capilers outward when the lever is released so that the outward brake shoe can move away from the disc.
I can buy pads but I can't find anywere the positioner.
The Rock Shox item (photo uploaded here by "tomato") have full kit. It's just what I'm looking for.
I hope that I am clear in this.
Thank all menber for your help.