Match Your Machine First: The Best Bottomless Portafilter

A bottomless portafilter, also sold as a naked portafilter, is a portafilter with the spouts and the underside cut away. You can see the bottom of the basket while the shot runs, which means you can see where the coffee comes through first and whether it comes through evenly.

The hard part of buying one is not choosing a handle. It is finding one that locks into your machine. This guide sorts seven picks by machine and size, gives the fit each listing states, and says plainly what these parts will not do. We have not pulled shots with them, so we go by the listings and by what an espresso retailer publishes.

Julia’s earns a commission on purchases made through links on this page, at no cost to you. Recommendations are based on what a working kitchen looks for in a tool, the makers’ own specifications and published guidance, which we name.

Quick verdict: which bottomless portafilter to buy

None of these will turn a poor shot into a good one by itself. They show you what is happening so you can fix the grind, the dose or the puck.

Five bottomless portafilters by machine

Five standouts, one for each common machine family, with fit taken from each listing. All seven are reviewed in full below.

Product images from Amazon. Fit and sizes are as stated on each listing; confirm your machine’s model number before you buy.

Our picks for the best bottomless portafilter

They run in the order we would consider them, but only the ones listed for your machine are real options. A 58mm part will not go into a 54mm group, and matching the diameter alone is not enough.

How to choose a naked portafilter that fits

Start with your model number

Look on the machine’s base or in its manual, then find that number on the listing. Seattle Coffee Gear warns that basket diameter alone does not guarantee a fit, because fit also depends on the position, thickness and shape of the locking tabs. That is why every pick here has a machine list.

Count the ears

Look at the portafilter you already have. It will have two or three locking ears, and a part with the wrong count will not lock. This matters most at 51mm, where two-ear and three-ear designs both exist.

Check the basket

See whether a basket comes with the part and whether it suits your usual dose. Seattle Coffee Gear gives the same advice, and adds that if you reuse a basket you should verify that it fits securely. Pressurized baskets are made to build pressure themselves, so they tell you far less about your puck.

Be sure your grinder can keep up

A non-pressurized basket depends on the grind. If your grinder cannot go fine and even, the shot will run fast whatever portafilter you use. If that sounds like your setup, a better burr espresso grinder will do more for your cup than this part.

Expect some mess

Seattle Coffee Gear says spraying can create more cleanup while you dial in your grind and preparation. Keep a cloth nearby and wipe the drip tray often for the first few weeks. Sputtering is information, not a defect.

Handle and clearance

Wood and aluminum handles are mostly a matter of feel. Clearance matters more. With no spouts you can usually fit a taller glass under the basket, and you can set a scale on the tray, but only one cup at a time, because there is nothing to split a double.

How we picked these seven portafilters

We did not use these parts ourselves. We started with Seattle Coffee Gear’s guide to bottomless portafilters, which we read in full, for what they show and how they fit. It is a retailer page, so we took its advice on fit and cleanup and not any product preference. Most other roundups our search found came from retailers or affiliate sites, and none of them gave controlled comparisons, so no pick rests on one.

From there, every pick had to be plainly in stock with a new offer, state its size, and name the machines it fits. We left out listings that only said ‘universal’, and we kept to two Amazon-first brands. The rest of each write-up rests on the listing and the maker’s details. Clive Coffee has a guide on this subject too, but we could not open it, so we do not quote it.

Bottomless portafilter questions, answered

Does a bottomless portafilter make better espresso?

Not on its own. Seattle Coffee Gear says it does not automatically improve flavor. It gives you visual feedback to use alongside taste, shot time and beverage weight, and the improvement comes from what you change once you can see the flow.

What is channeling and how would I see it?

Channeling is when water finds an easy path through the puck and skips the rest. Through an open basket, you would watch where the coffee emerges and how the flow develops, and a side that runs early or a spray of thin jets are the usual signs. Better distribution, tamping and grind are the usual fixes.

Will any 58mm portafilter fit my machine?

No. E61, Gaggia and Breville 58mm machines each have their own parts here, even though the diameter is the same. Check the listing for your model.

Can I pull two cups at once?

No. With no spouts there is nothing to divide the stream, so a double goes into one cup or a shared pitcher. Keep your spouted portafilter for days you are making two drinks.

Do I need a puck screen or a special tamper?

No, though both can help you get a tidy puck. We cover those in our guides to the best espresso puck screen and the best espresso tamper. Match the tamper to your basket size.

Is it easier to clean?

Partly. Seattle Coffee Gear notes that removing the spouted base makes the underside of the basket easier to reach. Follow each listing’s care advice, since the MHW-3BOMBER says to keep it out of the dishwasher and most of the others do not say.

The right part for your machine

If you have a 54mm Breville, the Breville Naked Portafilter is the one we would buy. On other machines, the right pick is whichever listing names your model. If you are still shopping for the machine itself, start with our guide to the best espresso machine, and when you are done pulling shots, a knock box keeps the pucks off your counter.