I have bled the clutch on my 2015 Monster 1200S (7K mikes) twice now as the lever became spongy and the take-up point became much closer to the handlebar. All the air came out of the Master Cylinder, which you might expect given the relative height of the M/C Vs the Slave Cylinder. However, if it does it again I'm going to have to consider that there is something going on.
I've looked in the the parts book and don't find rebuild kits for either the Master or the Slave Cylinder.
Does anyone know if Brembo sells rebuild kits? I sure hope they don't expect us to replace the whole assemblies . . . .