{"product_id":"306187","title":"Atomic Barra Built Cylinder Heads | CORE EXCHANGE","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta content=\"width=device-width, initial-scale=1.0\" name=\"viewport\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n        \/* ATOMIC PERFORMANCE THEME STYLES - LIGHT MODE *\/\n        .atomic-container {\n            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n            max-width: 1000px;\n            margin: 0 auto;\n            background-color: #ffffff;\n            color: #333333;\n            line-height: 1.6;\n            border: 1px solid #e0e0e0;\n            box-sizing: border-box;\n        }\n\n        \/* BRAND COLORS *\/\n        :root {\n            --atomic-orange: #E4522B;\n            --atomic-purple: #663399;\n            --light-grey: #f4f4f4;\n            --border-color: #ddd;\n        }\n\n        \/* TYPOGRAPHY *\/\n        .atomic-header {\n            text-align: center;\n            padding: 40px 20px;\n            border-bottom: 4px solid var(--atomic-orange);\n            background-color: #fafafa;\n            width: 100%;\n        }\n\n        .atomic-title {\n            color: var(--atomic-orange);\n            font-size: 2.5rem;\n            text-transform: uppercase;\n            margin: 0;\n            font-weight: 900;\n            letter-spacing: 1px;\n            line-height: 1.1;\n        }\n\n        .atomic-subtitle {\n            color: #555;\n            font-size: 1.2rem;\n            margin-top: 10px;\n            font-weight: 400;\n            text-transform: uppercase;\n            letter-spacing: 2px;\n        }\n\n        h2 {\n            color: #222;\n            text-transform: uppercase;\n            font-size: 1.8rem;\n            margin-bottom: 15px;\n            border-left: 5px solid var(--atomic-orange);\n            padding-left: 15px;\n        }\n\n        h3 {\n            color: #333;\n            font-size: 1.4rem;\n            margin-top: 0;\n            font-weight: 700;\n        }\n\n        p {\n            margin-bottom: 15px;\n            color: #444;\n        }\n\n        strong {\n            color: #000;\n        }\n\n        \/* LAYOUT GRIDS *\/\n        .atomic-section {\n            padding: 40px;\n            border-bottom: 1px solid #eee;\n        }\n\n        .atomic-grid {\n            display: grid;\n            grid-template-columns: 1fr 1fr;\n            gap: 40px;\n            align-items: center;\n        }\n\n        .atomic-card-grid {\n            display: grid;\n            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n            gap: 20px;\n            margin-top: 30px;\n        }\n\n        \/* FEATURE CARDS *\/\n        .atomic-card {\n            background-color: #f9f9f9;\n            padding: 25px;\n            border: 1px solid var(--border-color);\n            border-top: 4px solid var(--atomic-purple);\n            border-radius: 4px;\n            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);\n        }\n\n        .atomic-card h3 {\n            color: var(--atomic-purple);\n        }\n\n        \/* IMAGES *\/\n        .atomic-img {\n            width: 100%;\n            height: auto;\n            border-radius: 4px;\n            border: 1px solid #ddd;\n            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);\n            background-color: #eee; \/* Placeholder background *\/\n            min-height: 250px;\n            object-fit: cover;\n        }\n\n        .img-caption {\n            font-size: 0.85rem;\n            color: #666;\n            text-align: center;\n            margin-top: 8px;\n            font-style: italic;\n        }\n\n        \/* LISTS *\/\n        ul.atomic-list {\n            list-style: none;\n            padding: 0;\n        }\n\n        ul.atomic-list li {\n            padding-left: 25px;\n            position: relative;\n            margin-bottom: 10px;\n            color: #444;\n        }\n\n        ul.atomic-list li::before {\n            content: \"►\";\n            color: var(--atomic-orange);\n            position: absolute;\n            left: 0;\n        }\n\n        \/* CTA BUTTON *\/\n        .atomic-cta {\n            display: inline-block;\n            background-color: var(--atomic-orange);\n            color: #fff;\n            padding: 15px 30px;\n            font-size: 1.2rem;\n            font-weight: bold;\n            text-transform: uppercase;\n            text-decoration: none;\n            border-radius: 4px;\n            margin-top: 20px;\n            text-align: center;\n            box-sizing: border-box;\n            transition: background 0.3s;\n            cursor: pointer;\n            border: none;\n        }\n\n        .atomic-cta:hover {\n            background-color: #c03d1b;\n        }\n\n        \/* RESPONSIVE *\/\n        @media (max-width: 768px) {\n            .atomic-grid {\n                grid-template-columns: 1fr;\n            }\n\n            .atomic-title {\n                font-size: 1.8rem;\n            }\n\n            .atomic-section {\n                padding: 20px;\n            }\n        }\n    \u003c\/style\u003e\n\u003cdiv class=\"atomic-container\"\u003e\n\u003c!-- HEADER --\u003e\n\u003cdiv class=\"atomic-header\"\u003e\n\u003ch1 class=\"atomic-title\"\u003eAtomic Built Cylinder Heads\u003c\/h1\u003e\n\u003cdiv class=\"atomic-subtitle\"\u003eStage 2–6 | Exchange Program\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- EXCHANGE INFO BANNER --\u003e\n\u003cdiv style=\"background-color: #fffdf0; border-left: 6px solid #d4a017; margin: 20px; padding: 20px;\" class=\"atomic-section\"\u003e\n\u003ch3 style=\"color: #b08d55; margin-top: 0; text-transform: uppercase;\"\u003e🔄 Exchange Basis Only\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003eAll Atomic Cylinder Heads are sold on an \u003cstrong\u003eExchange Basis\u003c\/strong\u003e. You must provide a serviceable core.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003e\u003cstrong\u003eNeed a core?\u003c\/strong\u003e We may be able to provide one at an additional cost based on current stock. Please contact us to discuss.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0;\"\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e We can help organize shipping of your core to our workshop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- WHY YOU SHOULD UPGRADE SECTION --\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eUnlock The Power In Your Head\u003c\/h2\u003e\n\u003cp\u003eThe Barra cylinder head flows well from the factory, but there is massive room for improvement in velocity and efficiency. Whether you need a simple refresh for a street car or a dedicated race head to support 1500hp+, our staged program offers a solution for every build.\u003c\/p\u003e\n\u003c!-- DID YOU KNOW SECTION --\u003e\n\u003cdiv style=\"background-color: #f8f4fc; border-left: 5px solid var(--atomic-purple); padding: 20px; margin: 25px 0; border-radius: 4px;\"\u003e\n\u003cstrong style=\"color: var(--atomic-purple); font-size: 1.1rem; display: block; margin-bottom: 8px;\"\u003e💡 DID YOU KNOW?\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 0.95rem;\"\u003e\u003cstrong\u003eVelocity is King.\u003c\/strong\u003e Our Stage 4 Hand Porting increases both flow AND velocity by 10-12%. This isn't just about peak numbers; the increased velocity dramatically improves low-end torque, turbo spool, and throttle response. Next Gen Motorsports swapped to our Stage 4 head on a 1400+hp build and described the car as an \"animal\" that drove completely differently off-boost.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: var(--atomic-purple); border-left-color: var(--atomic-purple);\"\u003eThe Atomic Standard\u003c\/h2\u003e\n\u003cp\u003eEvery head we build starts with a rigorous inspection process. Castings are pressure tested, checked for cracks, and cam tunnels are honed. We deck every head to a specific surface finish optimized for MLS-D gaskets, ensuring a perfect seal under boost.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/intake_ports_stage_4_hand_2.jpg?v=1769768234\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/exhaust_port_close_up.jpg?v=1769744087\"\u003e\u003cbr\u003e\n\u003cdiv class=\"img-caption\"\u003eStage 4 - Velocity focused porting. Race Ready.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- STAGE SELECTION --\u003e\n\u003cdiv style=\"background-color: #fafafa;\" class=\"atomic-section\"\u003e\n\u003ch2 style=\"text-align: center; border: none; color: #333;\"\u003eChoose Your Stage\u003c\/h2\u003e\n\u003cdiv class=\"atomic-card-grid\"\u003e\n\u003c!-- Stage 2 --\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eStage 2 (OEM Rebuild)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Refresh.\u003c\/strong\u003e Perfect for stock or mild street cars.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #ddd;\"\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003eTurbo O-Series Exhaust Valves\u003c\/li\u003e\n\u003cli\u003eAtomic #306800 Springs \u0026amp; HD Retainers\u003c\/li\u003e\n\u003cli\u003eNew Stem Seals \u0026amp; HD Collets\u003c\/li\u003e\n\u003cli\u003eDecked, Honed \u0026amp; Pressure Tested\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Stage 3 --\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eStage 3 (OEM+)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Street Performer.\u003c\/strong\u003e Recommended for 700-800hp.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #ddd;\"\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\u003cstrong\u003eIncludes Stage 2 Spec\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e +0.5mm Stainless Exhaust Valves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e Increased Spring Pressure\u003c\/li\u003e\n\u003cli\u003eIdeal for maxing out stock turbos or medium upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Stage 4 --\u003e\n\u003cdiv style=\"border-top-color: var(--atomic-orange); background-color: #fff5f2;\" class=\"atomic-card\"\u003e\n\u003ch3 style=\"color: var(--atomic-orange);\"\u003eStage 4 (Do-It-All)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Powerhouse.\u003c\/strong\u003e Our most popular head for builds under 1500hp.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eecabb;\"\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\u003cstrong\u003eIncludes Stage 3 Spec\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e Hand Porting (+10-12% Velocity)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e Oil Drain Deburring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRec Cams:\u003c\/strong\u003e Stage 3, 4, or 4+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Stage 5 --\u003e\n\u003cdiv style=\"border-top-color: var(--atomic-purple);\" class=\"atomic-card\"\u003e\n\u003ch3 style=\"color: var(--atomic-purple);\"\u003eStage 5 (Pro Race)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Drag Spec.\u003c\/strong\u003e Maximum flow for maximum effort.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #ddd;\"\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\u003cstrong\u003eCNC Porting Program\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e +2.0mm Stainless Valves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e Titanium Retainers \u0026amp; Custom Seats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRec Cams:\u003c\/strong\u003e Stage 4+, 5+ or Custom\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Stage 6 Callout --\u003e\n\u003cdiv style=\"margin-top: 30px; text-align: center; max-width: 800px; margin-left: auto; margin-right: auto; padding: 20px; background-color: #fff; border: 1px solid #ddd; border-radius: 4px;\"\u003e\n\u003ch3 style=\"color: var(--atomic-orange); margin-top: 0;\"\u003e🏆 Stage 6: The Ultimate\u003c\/h3\u003e\n\u003cp\u003eStage 6 is identical to the Stage 5 Race spec but is built on a \u003cstrong\u003eBRAND NEW OEM FORD CASTING\u003c\/strong\u003e. Includes new seats and guides. The ultimate no-compromise foundation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TECH SPECS --\u003e\n\u003cdiv style=\"text-align: center; background-color: #fff;\" class=\"atomic-section\"\u003e\n\u003ch3 style=\"color: var(--atomic-orange); margin-top: 0;\"\u003eTech Specs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Ford Barra DOHC 4.0L (BA-FGX)\u003cbr\u003e\u003cstrong\u003eValves:\u003c\/strong\u003e Stainless Steel (Oversize on Stage 3+)\u003cbr\u003e\u003cstrong\u003ePorting:\u003c\/strong\u003e Hand Finished (Stg 4) \/ CNC (Stg 5\/6)\u003cbr\u003e\u003cstrong\u003eSprings:\u003c\/strong\u003e Atomic Matched Sets\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/barra_built_cylinder_head_stage_4_2.jpg?v=1769744067\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- CTA FOOTER --\u003e\n\u003cdiv style=\"text-align: center; border-bottom: none;\" class=\"atomic-section\"\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\u003ca class=\"atomic-cta\" href=\"#\"\u003eContact for Quote\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atomic Performance Products","offers":[{"title":"Stage 2 | STD Port | 80lbs springs | Turbo exhaust valves \/ BA (18mm solenoids)","offer_id":42816331448391,"sku":"306187","price":2750.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 2 | STD Port | 80lbs springs | Turbo exhaust valves \/ FG (20mm solenoids)","offer_id":42816331481159,"sku":null,"price":2750.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 3 | STD Port | 90-100lbs springs | All new stainless steel valves \/ BA (18mm solenoids)","offer_id":42816331513927,"sku":"306192","price":3650.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 3 | STD Port | 90-100lbs springs | All new stainless steel valves \/ FG (20mm solenoids)","offer_id":42816331546695,"sku":null,"price":3650.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 4 | Hand Ported | 100-125lbs springs | \/ BA (18mm solenoids)","offer_id":42816331579463,"sku":"306189","price":4550.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 4 | Hand Ported | 100-125lbs springs | \/ FG (20mm solenoids)","offer_id":42816331612231,"sku":null,"price":4550.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 5 | CNC Ported \/ BA (18mm solenoids)","offer_id":42816331644999,"sku":"306190","price":7150.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 5 | CNC Ported \/ FG (20mm solenoids)","offer_id":42816331677767,"sku":null,"price":7150.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 6 | CNC Ported \/ BA (18mm solenoids)","offer_id":42816331710535,"sku":"306191","price":13000.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 6 | CNC Ported \/ FG (20mm solenoids)","offer_id":42816331743303,"sku":null,"price":13000.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Barra_Built_Cylinder_Heads.jpg?v=1779748623","url":"https:\/\/www.ffpgarage.com.au\/products\/306187","provider":"FFP","version":"1.0","type":"link"}