Pullman Spring Portafilter - English

If your machine came with ridged baskets and you're getting a ridgeless double basket, it's a good idea to buy a replacement portafilter spring at the same time. Ridgeless baskets require a stronger spring than ridged baskets, such as on those shipped with the Rancilio Silvia, and experience shows the basket is prone to drop out of the portafilter if the spring is not replaced. However be aware that you may have difficulty fitting ridged baskets with the stronger spring in place so don't throw away your old spring if you intend to still use ridged baskets.