Hydraulic disc brakes can only give powerful safe operation when their seals are working perfectly, allowing no air to enter the system, or any hydraulic fluid to leak or by pass the piston. For the other service items for your brake overhaul, take a look at the online 'parts list' fiche for your model, or even take a look at the parts other customers ordered, as illustrated below?
Suited for models:
Extra product information: what is this?