58mm Group Head Upgrade Kit - Precision Shower Screen, Stainless Diffuser Plate and Gasket

Designed for Consistency The honeycomb pattern on the precision shower screen isn't decorative - it's engineered. The closely-spaced hexagonal micro-holes distribute water across a wider surface area than a standard stamped screen, saturating the puck more evenly from the first moment water makes contact. Pair that with a stainless diffuser plate (which spreads water pressure before it even reaches the screen) and you've replaced both sides of the water distribution system at once. The screen itself is a dual-layer build - a thicker perforated face plate bonded to a fine mesh underside. The extra thickness means it holds its shape under 9 bar without flexing or buckling when you torque it down. The mesh layer turns the water stream into a finer, more even spray before it hits the puck, which means less channelling risk and a cleaner extraction window. Premium Materials All three components are built to last in a high-heat, high-pressure environment: Shower screen: dual-layer stainless steel - perforated honeycomb face plate bonded to a fine mesh underside for stable, even dispersion under pressure Diffuser plate: solid stainless steel - no plastic, no degradation, nothing leaching into your brew path Group seal/gasket: food-safe silicone, rated for the temperature and pressure demands of an espresso machine Who This Kit Is For Breville Oracle, Dual Boiler, or Oracle Touch owners who want to do a proper grouphead refresh Anyone who's already replacing the diffuser plate and wants to do the full job while they're in there Home baristas chasing cleaner, more consistent extractions Anyone who prefers to keep plastic out of their brew path entirely Compatibility Designed for Breville and Sage 58mm machines, including: Breville Dual Boiler (BES920) Breville Oracle (BES980) Breville Oracle Touch (BES990) Breville Oracle Jet (BES985) Sage equivalents of the above ❌ Not compatible with Breville 54mm machines (Barista Express, Barista Pro, Bambino range) Also available separately: Stainless Steel Diffuser Plate only → A quick heads up before you install The new shower screen is noticeably thicker than the Breville stock part, and a fresh gasket has its full firmness before it's broken in. Both of those add up to a tighter, higher-puck space inside the grouphead than you're used to. Practically, this means two things for your first week or two of shots: Drop your dose slightly. Start by pulling back 1–2g from your usual dose and dial in from there. If your portafilter is harder to lock in than normal, that's your sign — back off the dose before you back off the grind. Expect the lock-in to soften. New silicone gaskets feel firm out of the box, then gradually settle over the first few weeks of use. The portafilter handle will sit progressively further around the grouphead as the seal beds in. This is normal and means the seal is doing its job. Once the gasket has softened (usually 2–3 weeks of daily use) you'll likely be able to bring your dose back up, but the slightly thicker screen will stay — so a small permanent grind or dose tweak isn't unusual. Installation Remove the grouphead screw and stock shower screen Remove the plastic diffuser plate behind it Peel out the old group seal from the grouphead recess Press the new silicone gasket into place Seat the stainless diffuser plate (indent facing away from the screen) Fit the new precision shower screen and reinstall with your existing screw Run a backflush before pulling your first shot Tools required: 4mm allen key What's Included 1 × 58mm Dual Layer Precision Honeycomb Shower Screen 1 × Stainless Steel Diffuser Plate 1 × Silicone Group Seal / Gasket Specifications Machine Compatibility: Breville / Sage 58mm grouphead Shower Screen Material: Stainless steel Shower Screen Construction: Dual-layer (perforated face + fine mesh underside) Diffuser Plate Material: Stainless steel Gasket Material: Food-safe silicone Install Time: 5 minutes Tools Required: 4mm allen key