KNODOS 58mm Bottomless Portafilter for Breville Dual Boiler & Oracle — Maple Handle, 2-Ear, 18–21g Basket

KNODOS 58mm Bottomless Portafilter for Breville Dual Boiler, Oracle & Oracle Jet — Maple Handle

A 58mm naked portafilter with a 2-ear lug design built specifically for Breville Dual Boiler, Oracle, and Oracle Jet espresso machines. Ships with an 18–21g double shot filter basket and a hand-turned maple handle. Designed to replace the stock spouted portafilter and give you a direct view of the espresso extraction from the bottom of the basket.

Why Go Bottomless

A bottomless portafilter removes the spout and exposes the underside of the filter basket. This lets you see the espresso flow in real time — from the first drops to full stream. Channeling, uneven distribution, and grind problems become visible immediately instead of hiding behind a spout. It is the fastest way to diagnose and improve your puck prep.

2-Ear Lug for Breville Dual Boiler and Oracle

Breville's Dual Boiler, Oracle, and Oracle Jet use a 58mm group head with a 2-ear locking mechanism — different from the 3-ear design used on Breville's 54mm machines. This portafilter is built with the correct 2-ear lugs to fit these specific models. It will not fit Breville Barista Express, Barista Pro, or other 54mm machines.

18–21g Double Shot Filter Basket Included

The portafilter ships with a stainless steel 18–21g double shot basket. This is the standard dose range for most espresso recipes and accommodates medium to dark roasts at typical grind sizes. The basket sits inside the portafilter and is removable for cleaning or replacement with aftermarket baskets like VST or IMS.

Maple Handle

The handle is turned from solid maple wood — a light-colored, moisture-resistant hardwood with a smooth, uniform grain. Maple is lighter in weight than walnut or rosewood, which some users prefer for a more neutral, balanced feel. The handle is pre-installed and ready to use out of the box.

Stainless Steel Construction

The portafilter body is made from food-grade stainless steel. It is corrosion-resistant, dishwasher-safe, and built to handle the heat and pressure of daily espresso use without degradation.

What's Included

• 1x KNODOS 58mm Bottomless Portafilter (2-ear, Maple Handle)

• 1x 18–21g Double Shot Filter Basket

Machine Compatibility

Fits Breville Dual Boiler (BES920), Oracle (BES980), and Oracle Jet. These machines use a 58mm group head with 2-ear lugs. Does not fit Breville Barista Express, Barista Pro, Barista Touch, Bambino, or Infuser — those use 54mm portafilters with 3-ear lugs.

Frequently Asked Questions

Will this fit my Breville Barista Express?

No. The Barista Express uses a 54mm portafilter with 3-ear lugs. This portafilter is 58mm with 2-ear lugs — designed only for the Dual Boiler, Oracle, and Oracle Jet.

What is a bottomless portafilter used for?

It lets you see the espresso extraction from below the basket. This makes it easy to spot channeling, uneven flow, and puck prep issues that are invisible with a spouted portafilter. Most home baristas use it as a training and diagnostic tool.

Can I use third-party baskets like VST or IMS in this portafilter?

Yes. The portafilter accepts standard 58mm filter baskets. Aftermarket precision baskets from VST, IMS, and similar brands fit inside the portafilter body.

What is the difference between 2-ear and 3-ear portafilters?

The ears are the lugs on the portafilter that lock into the group head. Breville's 54mm machines use 3-ear lugs. Breville's 58mm machines (Dual Boiler, Oracle) use 2-ear lugs. The two types are not interchangeable.