The Breville Dual Boiler and Oracle are Breville's flagship home espresso machines — and they use a 58mm grouphead, the same standard as commercial equipment. Every accessory below is precision-matched for 58mm, from bottomless portafilters to tampers, puck screens and distributors.
What should I upgrade first?
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Bottomless Portafilter — The most impactful upgrade. See your extraction in real time and dial in consistency fast. The 58mm format gives you access to the widest range of aftermarket portafilters available.
High Diffusion Shower Screen — A popular upgrade for Dual Boiler and Oracle owners. Replaces the stock shower screen with a precision-engineered version for more even water distribution and a noticeably cleaner grouphead.
Stainless Steel Diffuser Plate — Upgrades the plastic stock diffuser plate to stainless steel. Works best paired with the high diffusion shower screen for maximum extraction consistency.
58mm Tamper & Distributor — If you're still on the stock tamper, a barista-grade 58mm tamper is an easy win. Pair it with a distributor or go straight for a 2-in-1 combo.
58mm
