Breville Barista Express · Knock boxes

Which knock boxes fit Breville Barista Express?

2 products have passed evidence review for this device. All of them fit without a limitation. None of them include an additional note.

Every answer cites a source

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The answers

Knock boxes for Breville Barista Express, one by one

Whether it fits is settled first. Whether it is worth buying is a separate label.

Is Breville the Knock Box 10 compatible with Breville Barista Express?

Breville · Part BEA501

Yes, it fits.CompatibleUseful

Breville designs the 10-puck box for standard espresso portafilters, so it has no machine-specific fit interface.

Manufacturer confirmedVerified Jul 30, 2026USFeature parity: Full

The source behind this answer

Breville — Breville the Knock Box 10LocationProduct description and Puck capacity sectionSupportsBreville documents this 10-puck knock box for use with espresso-machine portafilters.First-party documentation · Accessed Jul 30, 2026

Is Breville the Knock Box 20 compatible with Breville Barista Express?

Breville · Part BEA502

Yes, it fits.CompatibleUseful

Breville designs the 20-puck box for standard espresso portafilters, so it has no machine-specific fit interface.

Manufacturer confirmedVerified Jul 30, 2026USFeature parity: Full

The source behind this answer

Breville — Breville the Knock Box 20LocationProduct description and Puck capacity sectionSupportsBreville documents this 20-puck knock box for use with espresso-machine portafilters.First-party documentation · Accessed Jul 30, 2026

Side by side

Attribute	Breville the Knock Box 10	Breville the Knock Box 20
Fits Breville Barista Express	Compatible	Compatible
Worth buying	Useful	Useful
Anti slip base	Yes	Yes
Genuine part	Yes	Yes
Puck capacity	10	20
Removable knock bar	Yes	Yes
Made by	Breville	Breville
Part number	BEA501	BEA502
Note before buying	None recorded	None recorded
Evidence	Manufacturer confirmed	Manufacturer confirmed

Bottom line

Fit is settled above. This is who each one suits once fit is no longer the question.

Breville the Knock Box 10The common second purchase once the essentials are covered. The only one on this page recording Puck capacity — 10.
Breville the Knock Box 20The common second purchase once the essentials are covered. The only one on this page recording Puck capacity — 20.

Already own one of these?

Fit rarely carries across generations, so this lists only the exact models each product is separately documented to fit.

None of these knock boxes is documented to fit any other model we cover. Treat each one as specific to Breville Barista Express.

Same device

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