Wash out your Rancilio's internal residue every so often and give it a good backflush using the Rancilio Blind Filter Basket. Note that squeezing a miss-sized basket into your portafilter can cause the Portafilter Spring to wear down and become less grippy - meaning your brew-baskets will likely stick inside the grouphead more often. It's a slippery slope of mishaps–so just make sure to use baskets that are a true fit to your portafilter.

This blank backflushing basket will fit like a glove with Rancilio's commercial and domestic machines, sizing in at 58mm.

Part number: 40100105