Coffee Gear Finds
Portafilter51mmNeeds verification

51mm Bottomless Portafilter

Exposes the puck base to analyze espresso flow and channeling.

A bottomless portafilter is an upgrade, not a guaranteed drop-in replacement. Basket and gasket depth must be checked per machine.

Brand or maker
Unbranded / not specified
Product type
Portafilter
51mm bottomless portafilter

Best for

  • check_circleDiagnosing channeling
  • check_circleExtraction practice

tune Details

Diameter
51 mm
Relevant to grouphead fit
Ears
3-ear
Basket
Bottomless / naked
Third-party fit not measured

handyman Will it fit my machine?

CASABREWS CM5418Needs verification

Basis: Diameter matches, but third-party precision basket compatibility with the CM5418 is not confirmed.

CASABREWS 5418 ProNeeds verification

Basis: The 5418 Pro collar may engage differently; no measurement is on file.

Fit labels reflect published documentation, not physical testing.

source Where this information comes from

  • task_altExisting 51mm portafilter compatibility warning
shopping_bag

Where to buy

Retailer link not available yet.

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Related products

Same product type, or another product documented for the same machine.

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