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Breville · Part BEA202
Breville specifies the BEA202 for 54 mm Breville portafilters, matching the documented portafilter system of both target models.
KNODOS
KNODOS explicitly covers BES870 and BES876 in its 54 mm guide and recommends the Echo 54 mm calibrated tamper for that system.
Open the evidence, limitations, and model identity for a single accessory.