{"product_id":"group-head-upgrade-breville-sage-58mm-oracle-dual-boiler","title":"58mm Group Head Upgrade Kit - Precision Shower Screen, Stainless Diffuser Plate and Gasket","description":"\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eDesigned for Consistency\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe 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.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePair 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.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cmeta charset=\"utf-8\"\u003eThe 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.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003ePremium Materials\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAll three components are built to last in a high-heat, high-pressure environment:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eShower screen:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003edual-layer stainless steel - perforated honeycomb face plate bonded to a fine mesh underside for stable, even dispersion under pressure\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eDiffuser plate:\u003c\/strong\u003e solid stainless steel - no plastic, no degradation, nothing leaching into your brew path\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eGroup seal\/gasket:\u003c\/strong\u003e food-safe silicone, rated for the temperature and pressure demands of an espresso machine\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eWho This Kit Is For\u003c\/h3\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eBreville Oracle, Dual Boiler, or Oracle Touch owners who want to do a proper grouphead refresh\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eAnyone who's already replacing the diffuser plate and wants to do the full job while they're in there\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eHome baristas chasing cleaner, more consistent extractions\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eAnyone who prefers to keep plastic out of their brew path entirely\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDesigned for \u003cstrong\u003eBreville and Sage 58mm machines\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eBreville Dual Boiler (BES920)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eBreville Oracle (BES980)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eBreville Oracle Touch (BES990)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eBreville Oracle Jet (BES985) \u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eSage equivalents of the above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e❌ Not compatible with Breville 54mm machines (Barista Express, Barista Pro, Bambino range)\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAlso available separately: \u003ca href=\"https:\/\/coffeenerd.com.au\/products\/stainless-steel-diffuser-plate-for-breville-58mm-machines\" class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\"\u003eStainless Steel Diffuser Plate only →\u003c\/a\u003e\u003c\/p\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eA quick heads up before you install\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe 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.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePractically, this means two things for your first week or two of shots:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eDrop your dose slightly.\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eExpect the lock-in to soften.\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOnce 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.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eInstallation\u003c\/h3\u003e\n\u003col class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-decimal flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eRemove the grouphead screw and stock shower screen\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eRemove the plastic diffuser plate behind it\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003ePeel out the old group seal from the grouphead recess\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003ePress the new silicone gasket into place\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eSeat the stainless diffuser plate (indent facing away from the screen)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eFit the new precision shower screen and reinstall with your existing screw\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eRun a backflush before pulling your first shot\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eTools required:\u003c\/strong\u003e 4mm allen key  \u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e1 × 58mm Dual Layer Precision Honeycomb Shower Screen\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e1 × Stainless Steel Diffuser Plate\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e1 × Silicone Group Seal \/ Gasket \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eMachine Compatibility:\u003c\/strong\u003e Breville \/ Sage 58mm grouphead\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eShower Screen Material:\u003c\/strong\u003e Stainless steel\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eShower Screen Construction:\u003c\/strong\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e Dual-layer (perforated face + fine mesh underside)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eDiffuser Plate Material:\u003c\/strong\u003e Stainless steel\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eGasket Material:\u003c\/strong\u003e Food-safe silicone\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eInstall Time:\u003c\/strong\u003e 5 minutes\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eTools Required:\u003c\/strong\u003e 4mm allen key\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Coffee Nerd","offers":[{"title":"Default Title","offer_id":46742506143902,"sku":"ACC-SHW-SS-DIF-58","price":115.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0578\/9882\/7934\/files\/Breville_58mm_Group_Head_Upgrade_Kit_6e78a9bb-f9e0-4828-97c2-1923beb7044d.png?v=1779343891","url":"https:\/\/coffeenerd.co.nz\/products\/group-head-upgrade-breville-sage-58mm-oracle-dual-boiler","provider":"Coffee Nerd","version":"1.0","type":"link"}