Breville’s OEM dual-wall (pressurized) two-cup basket for its 54mm portafilter
machines, sold as replacement part SP0001521. The part page itself only says
“for multiple Breville Espresso Machines”; the cross-references here are to
machines whose own official pages state they use a 54mm portafilter and ship
with dual-wall baskets (Barista Express BES870, Bambino BES450, Barista Pro
BES878, Barista Touch BES880, Duo Temp Pro BES810, Infuser BES840). Verified
against Breville’s official pages on 2026-07-04.
Dual-wall baskets are pressurized — Breville’s design for pre-ground or
inconsistent grinds. Does not fit 58mm machines.
FAQ
What size portafilter is the Breville 54mm Filter 2 Cup Dual Wall for?
It is a 54mm basket, for 54mm portafilters.
Is the Breville 54mm Filter 2 Cup Dual Wall pressurized?
Yes — it is a pressurized (dual-wall) basket, designed for pre-ground or less consistent coffee.
Which machines does the Breville 54mm Filter 2 Cup Dual Wall fit?
https://www.breville.com/us/en/parts-accessories/parts/sp0001521.html(archived) — Official Breville (US) replacement-part page, read firsthand 2026-07-04. Product name verbatim: '54 mm Filter 2 Cup Dual Wall', described as being 'for multiple Breville Espresso Machines'. Breville does not list the specific models on this page — the machine cross-references below come from each machine's own official product page.
https://www.breville.com/en-us/product/bes870(archived) — Official Barista Express BES870 page, read firsthand 2026-07-04: the machine has a '54 mm stainless steel portafilter' and ships with '1 cup & 2 cup Single & Dual Wall Filter Baskets' — i.e. this basket type is the machine's own OEM configuration.
https://www.breville.com/en-us/product/bes450(archived) — Official Bambino BES450 page, read firsthand 2026-07-04: '54 mm portafilter delivers full flavor with dual and single wall filters', with '1 cup & 2 cup Single Wall & Dual Wall Filter Baskets' included.