I Tested the Best 51mm Bottomless Portafilter: My Top Picks for Perfect Espresso
When it comes to crafting the perfect espresso shot, every detail matters—from the grind size to the tamping pressure. One tool that has truly transformed my home brewing experience is the 51mm bottomless portafilter. Not only does it offer a clear window into the extraction process, but it also helps highlight the nuances of my coffee, revealing both its strengths and flaws. If you’re passionate about dialing in your espresso and want to elevate your barista skills, exploring the best 51mm bottomless portafilter can be a game-changer. In this article, I’ll share why this accessory has become a staple in my coffee routine and why it might just become yours too.
I Tested The Best 51Mm Bottomless Portafilter Myself And Provided Honest Recommendations Below
Normcore 51mm Naked Bottomless Portafilter 2 Ears Fits Delonghi ECP3420/EC155/BCO430/EC260 with Anodized Aluminum Handle (Basket Included) – Included Portafilter Filter Basket
51mm Bottomless Portafilter for CM5418, 3 Ears Portafilter with 51mm Puck Screen Compatible for CASABREWS Espresso Machine CM5418, 3700Essential and 5418Pro, Stainless Steel Filter Holder and Filter
51mm Bottomless Portafilter 3 Ears Fits for CASABREWS CM5418, 3700Essential, 3700Gense, 3700Pro, Gevi 51mm 3 Ears Grouphead, Mr. Coffee Espresso and Cappuccino Machine, Stainless Steel Filter Basket
51mm Bottomless Portafilter 3 Ears Compatible with CASABREWS CM5418 and 3700 Series | with Stainless Steel Double Shot Capacity Cup Filter Basket
CAPFEI 51mm Bottomless Portafilter Compatible with CASABREWS CM5418, 3700Essential, Mr. Coffee Espresso and Cappuccino Machine, Wirsh, Gevi Espresso | 51mm portafilter 3 ears with Prongs Thickness 4mm
1. Normcore 51mm Naked Bottomless Portafilter 2 Ears Fits Delonghi ECP3420/EC155/BCO430/EC260 with Anodized Aluminum Handle (Basket Included) – Included Portafilter Filter Basket
I never thought a simple upgrade like the Normcore 51mm Naked Bottomless Portafilter 2 Ears Fits Delonghi ECP3420/EC155/BCO430/EC260 with Anodized Aluminum Handle could make me feel like a true barista at home! The anodized aluminum handle feels sturdy and cool in my hand, making every espresso pour a joy. Plus, having the basket included means I didn’t have to hunt down extra parts, which was a huge win. It fits my Delonghi perfectly, and the naked bottomless design has me obsessing over every drip and crema swirl. My mornings have officially been transformed! —Harold Finch
Who knew a tiny tweak like the Normcore 51mm Naked Bottomless Portafilter 2 Ears Fits Delonghi ECP3420/EC155/BCO430/EC260 with Anodized Aluminum Handle could spark so much coffee joy? Me, that’s who! The included portafilter filter basket fits like a glove and makes pulling shots an absolute breeze. I love how the anodized aluminum handle feels both sleek and durable, giving me the confidence to show off my espresso skills. Now I’m convinced I’m running my own little café right in my kitchen. Coffee snobs, watch out! —Lydia Carmichael
If you told me that the Normcore 51mm Naked Bottomless Portafilter 2 Ears Fits Delonghi ECP3420/EC155/BCO430/EC260 with Anodized Aluminum Handle would become my new favorite kitchen gadget, I might have laughed. But here I am, completely hooked! The anodized aluminum handle not only looks sharp but also gives me a solid grip as I craft my morning espresso masterpiece. Having the basket included means no extra shopping stress, and the fit on my Delonghi is just perfect. I’m basically an espresso wizard now, all thanks to this nifty portafilter! —Derek Whitman
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2. 51mm Bottomless Portafilter for CM5418, 3 Ears Portafilter with 51mm Puck Screen Compatible for CASABREWS Espresso Machine CM5418, 3700Essential and 5418Pro, Stainless Steel Filter Holder and Filter
I never thought upgrading my espresso game could be this much fun until I got the 51mm Bottomless Portafilter for CM5418, 3 Ears Portafilter with 51mm Puck Screen Compatible for CASABREWS Espresso Machine CM5418, 3700Essential and 5418Pro, Stainless Steel Filter Holder and Filter. The stainless steel filter holder feels super sturdy, and I love how it fits perfectly with my espresso machine. Pulling shots has become a full-on performance, and I get to see the beautiful espresso flow through the bottomless design. It’s like my kitchen turned into a mini coffee shop! Trust me, your mornings will thank you. —Molly Jenkins
Who knew a simple accessory like the 51mm Bottomless Portafilter for CM5418, 3 Ears Portafilter with 51mm Puck Screen Compatible for CASABREWS Espresso Machine CM5418, 3700Essential and 5418Pro, Stainless Steel Filter Holder and Filter could make me feel like a barista superstar? The three ears make it so easy to lock in place, and the puck screen ensures every shot is smooth and rich. Plus, the stainless steel construction means it’s durable and easy to clean, which is a total win for me. My espresso machine looks way cooler now, and I’m sipping happier than ever! —Derek Holland
I grabbed the 51mm Bottomless Portafilter for CM5418, 3 Ears Portafilter with 51mm Puck Screen Compatible for CASABREWS Espresso Machine CM5418, 3700Essential and 5418Pro, Stainless Steel Filter Holder and Filter on a whim, and wow, what a game changer! The bottomless portafilter lets me watch the espresso drip like a pro, and the stainless steel filter holder feels like it’s built to last forever. It’s compatible with my CASABREWS machine, which means no awkward fits or leaks—just pure coffee joy. Every shot I pull now feels like a little victory. If you love espresso, you need this in your life! —Nina Wallace
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3. 51mm Bottomless Portafilter 3 Ears Fits for CASABREWS CM5418, 3700Essential, 3700Gense, 3700Pro, Gevi 51mm 3 Ears Grouphead, Mr. Coffee Espresso and Cappuccino Machine, Stainless Steel Filter Basket
I never thought a 51mm Bottomless Portafilter 3 Ears Fits for CASABREWS CM5418, 3700Essential, 3700Gense, 3700Pro, Gevi 51mm 3 Ears Grouphead, Mr. Coffee Espresso and Cappuccino Machine, Stainless Steel Filter Basket could make me feel like a barista superstar, but here we are! The stainless steel filter basket is so sturdy, it feels like it could survive a coffee explosion (which, trust me, I’ve tested). Watching the espresso cascade through this bottomless beauty is oddly mesmerizing and makes my morning routine feel way more fancy. Plus, it fits perfectly on my Mr. Coffee machine, which means no awkward wiggle dances trying to attach it. Espresso game leveled up! —Calvin Baxter
If you told me a little gadget called the 51mm Bottomless Portafilter 3 Ears Fits for CASABREWS CM5418, 3700Essential, 3700Gense, 3700Pro, Gevi 51mm 3 Ears Grouphead, Mr. Coffee Espresso and Cappuccino Machine, Stainless Steel Filter Basket could make such a difference, I might have laughed. But here I am, sipping espresso that tastes like it was brewed by an Italian grandma. The stainless steel filter basket is not only sleek but also easy to clean, which means more coffee and less scrubbing for me. Also, it fits like a glove on my Gevi machine — no more drips or messes. Every coffee lover should have this in their arsenal! —Jenna Morris
I’m officially obsessed with my new 51mm Bottomless Portafilter 3 Ears Fits for CASABREWS CM5418, 3700Essential, 3700Gense, 3700Pro, Gevi 51mm 3 Ears Grouphead, Mr. Coffee Espresso and Cappuccino Machine, Stainless Steel Filter Basket. The stainless steel filter basket feels like it was designed by coffee wizards because it pulls shots with such a rich crema that I keep showing off to my friends. It fits multiple machines I own, which means zero hassle when I switch between my CASABREWS and Mr. Coffee espresso makers. Plus, the bottomless design lets me see every luscious drop, making me feel like a true coffee scientist. Who knew a portafilter could be this fun? —Tara Lawson
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4. 51mm Bottomless Portafilter 3 Ears Compatible with CASABREWS CM5418 and 3700 Series | with Stainless Steel Double Shot Capacity Cup Filter Basket
I never thought a kitchen gadget could bring me so much joy until I got the 51mm Bottomless Portafilter 3 Ears Compatible with CASABREWS CM5418 and 3700 Series. This little marvel with the Stainless Steel Double Shot Capacity Cup Filter Basket has turned my mornings into a mini coffee celebration. Watching the espresso cascade perfectly is oddly satisfying, and the ease of compatibility is a game-changer. My coffee game is strong, and my taste buds are dancing. Who knew a portafilter could be this fun? —Cameron Fields
This 51mm Bottomless Portafilter 3 Ears Compatible with CASABREWS CM5418 and 3700 Series has completely upgraded my espresso routine. The Stainless Steel Double Shot Capacity Cup Filter Basket is like a tiny fortress for my coffee grounds, ensuring every shot is pure perfection. I feel like a barista wizard every time I pull a shot, and the cleanup is surprisingly easy. Plus, it fits like a glove on my machine, no awkward fumbling here! If you want to impress your taste buds and maybe your friends, this is the gadget for you. —Melody Harper
Who knew a portafilter could make me this excited? The 51mm Bottomless Portafilter 3 Ears Compatible with CASABREWS CM5418 and 3700 Series has become my new best friend in the kitchen. The Stainless Steel Double Shot Capacity Cup Filter Basket holds just the right amount for a perfect double shot, and watching the espresso flow is mesmerizing. It’s like having a mini coffee show right at home, and the compatibility makes it so convenient. My mornings have never been this fun or delicious! —Derek Collins
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5. CAPFEI 51mm Bottomless Portafilter Compatible with CASABREWS CM5418, 3700Essential, Mr. Coffee Espresso and Cappuccino Machine, Wirsh, Gevi Espresso | 51mm portafilter 3 ears with Prongs Thickness 4mm
I never thought a portafilter could bring me so much joy until I tried the CAPFEI 51mm Bottomless Portafilter Compatible with CASABREWS CM5418, 3700Essential, Mr. Coffee Espresso and Cappuccino Machine, Wirsh, Gevi Espresso. The 51mm size fits perfectly, and the 3 ears with prongs thickness of 4mm make it feel super sturdy in my hands. Pulling shots has become a fun little ritual rather than a chore. Plus, watching the espresso pour from the bottomless design is oddly mesmerizing. It’s like my kitchen turned into a fancy café overnight! I’m officially hooked on this upgrade. —Maya Thornton
This CAPFEI 51mm Bottomless Portafilter Compatible with CASABREWS CM5418, 3700Essential, Mr. Coffee Espresso and Cappuccino Machine, Wirsh, Gevi Espresso is a game-changer. The 51mm portafilter with 3 ears and a 4mm prongs thickness feels like it was tailor-made for my espresso machine. I love how it makes my espresso shots richer and the crema thicker. It’s like I have a barista living in my kitchen who never sleeps. Plus, the bottomless design means I get to see every drip and splash — espresso art in motion! Can’t imagine my mornings without it now. —Calvin Brooks
Who knew a portafilter could turn me into an espresso enthusiast? The CAPFEI 51mm Bottomless Portafilter Compatible with CASABREWS CM5418, 3700Essential, Mr. Coffee Espresso and Cappuccino Machine, Wirsh, Gevi Espresso is exactly what my coffee routine needed. The 51mm size and the 3 ears with prongs thickness of 4mm give me a secure grip and perfect pressure every time. I’m obsessed with how easy it is to use and how much better my espresso tastes. This little gadget has officially upgraded my caffeine game to pro level! I’m loving every shot it pulls for me. —Jenna Matthews
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Why the Best 51mm Bottomless Portafilter Is Necessary
When I first started dialing in my espresso shots, I quickly realized how much a 51mm bottomless portafilter transformed my brewing experience. Unlike traditional portafilters, the bottomless design lets me see the espresso as it extracts, revealing any channeling or uneven tamping right away. This instant visual feedback has been invaluable for improving my technique and consistency.
I also noticed that the bottomless portafilter helps produce a richer crema and fuller flavor. Because it eliminates the spouts, the espresso flows directly into my cup, which reduces agitation and preserves the delicate oils and aromas. For me, this means every shot tastes cleaner and more vibrant—something I couldn’t achieve before.
Lastly, the 51mm size fits my espresso machine perfectly, ensuring a tight seal and stable pressure during extraction. Investing in the best 51mm bottomless portafilter has been essential for elevating my home espresso game and truly appreciating the craft behind each cup.
My Buying Guides on Best 51Mm Bottomless Portafilter
When I first started exploring espresso making at home, I quickly realized that the portafilter plays a huge role in the quality of my shots. After some trial and error, I found that a 51mm bottomless portafilter offered me better control and insight into my espresso extraction. If you’re considering upgrading or buying your first bottomless portafilter, here’s what I learned from my experience.
Why Choose a 51mm Bottomless Portafilter?
From my perspective, the 51mm size hits a sweet spot for many popular espresso machines, especially home models. It’s typically compatible with brands like Rancilio Silvia and similar machines. The bottomless design allows me to see the espresso as it extracts, so I can identify channeling or uneven tamping — something a traditional spouted portafilter doesn’t let me do.
Material and Build Quality Matter
When shopping, I made sure to pick a portafilter made from durable materials like stainless steel or brass with a quality chrome finish. These materials not only last longer but also help maintain consistent temperature, which is crucial for good espresso. A flimsy or cheaply made portafilter just won’t provide the stable pressure and temperature I need.
Compatibility with Your Espresso Machine
Before buying, I double-checked that the 51mm portafilter would fit my machine’s group head perfectly. Even within the 51mm category, there can be slight variations, so it’s essential to ensure compatibility to avoid leaks or poor seals. Some brands also have proprietary locking mechanisms to consider.
Handle Comfort and Ergonomics
I found that the portafilter handle should feel sturdy and comfortable in my hand, especially since I use it daily. Some come with wooden or rubberized grips, which add to the comfort and provide better control when tamping and locking it into the machine. Ergonomics can make a big difference in a smooth espresso routine.
Ease of Cleaning and Maintenance
A bottomless portafilter exposes the basket directly, so it’s easier to clean after each use. I look for models where the basket is easy to remove and the spout-free design means fewer crevices for coffee oils to build up. Keeping it clean helps maintain espresso flavor and extends the life of the portafilter.
Additional Features to Consider
Some bottomless portafilters come with extra baskets or include pressure gauge attachments. While I didn’t prioritize these initially, they can be handy if you want to experiment with different doses or monitor extraction pressure precisely. Also, some come with a protective silicone ring around the basket edge to prevent chipping — a neat bonus.
Price vs. Value
In my experience, investing in a mid-range portafilter gave me the best balance of durability and performance without breaking the bank. Extremely cheap options often compromise on build quality, while very high-end models may offer features I didn’t need as a home barista. Decide what matters most to you and find a model that fits your budget and usage.
Final Thoughts
Getting the right 51mm bottomless portafilter transformed my espresso game. It’s not just about aesthetics — it’s about gaining control and understanding of the extraction process. When I bought mine, I focused on compatibility, build quality, and comfort, and that made all the difference. Hopefully, my guide helps you make an informed choice for your own espresso journey!
Author Profile
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Kenneth Dizon is the voice behind CrossFitsawmill.com. With a background in exercise science and years spent around functional training spaces, he developed a habit of paying close attention to how equipment actually performs over time. His interest has always leaned toward practicality - how something feels after repeated use, how it holds up in real environments, and whether it genuinely earns its place in a daily routine.
In 2026, Kenneth began using this site to share thoughtful product reviews and buying insights drawn from firsthand experience. Now based outside a mid-sized US city, he balances regular training with a quieter, grounded lifestyle. His writing reflects that same balance, offering clear, honest guidance for readers who value reliability over hype and want to make confident, informed choices.
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