etritdortmund2 years ago000Hello, what is the diameter of the portafilter? And can you replace it with a bottomless portafilter (e.g. from another brand)?Show in original language (German)Boeneler2 years ago000I don't know if a bottomless portafilter fits on the machine. I am very happy with the original part.Show in original language (German)CommentBoeneler2 years ago000HelloThe portafilter piston has a diameter of 53mm.Show in original language (German)Comment