{"product_id":"306255-ef-au","title":"Atomic Mains Steel Girdle, EF-AU SOHC 10mm Thick","description":"\u003cp data-start=\"245\" data-end=\"353\" class=\"\"\u003e\u003cstrong data-start=\"258\" data-end=\"353\"\u003eAtomic Steel Main Girdle – EF–AU Ford SOHC 6-Cyl | 10mm Thick | Bottom-End Strength Upgrade\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"355\" data-end=\"616\" class=\"\"\u003e\u003cstrong data-start=\"355\" data-end=\"371\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"371\" data-end=\"374\"\u003eWhen you start pushing big power through a \u003cstrong data-start=\"417\" data-end=\"454\"\u003eFord SOHC 6-cylinder EF–AU engine\u003c\/strong\u003e, bottom-end integrity becomes critical. Flex, cap walk, and crank movement under load can destroy bearings and ruin your build — unless it's properly reinforced.\u003c\/p\u003e\n\u003cp data-start=\"618\" data-end=\"953\" class=\"\"\u003eThe \u003cstrong data-start=\"622\" data-end=\"655\"\u003eAtomic 10mm Steel Main Girdle\u003c\/strong\u003e ties the entire lower end together to significantly improve crankshaft stability and block rigidity under boost and RPM. \u003cstrong data-start=\"777\" data-end=\"812\"\u003eLaser-cut from 10mm steel plate\u003c\/strong\u003e, this girdle is engineered to eliminate main cap movement, reduce crank flex, and deliver confidence when you're chasing serious horsepower.\u003c\/p\u003e\n\u003chr data-start=\"955\" data-end=\"958\" class=\"\"\u003e\n\u003ch3 data-start=\"960\" data-end=\"985\" class=\"\"\u003e✅ \u003cstrong data-start=\"966\" data-end=\"983\"\u003eKey Features:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"986\" data-end=\"1466\" class=\"\"\u003e✅ Suits Ford EF–AU SOHC 4.0L 6-cylinder engines\u003cbr data-start=\"1033\" data-end=\"1036\"\u003e✅ \u003cstrong data-start=\"1038\" data-end=\"1074\"\u003e10mm thick precision steel plate\u003c\/strong\u003e – laser-cut for strength and accuracy\u003cbr data-start=\"1112\" data-end=\"1115\"\u003e✅ Dramatically reduces \u003cstrong data-start=\"1138\" data-end=\"1170\"\u003emain cap walk and block flex\u003c\/strong\u003e under load\u003cbr data-start=\"1181\" data-end=\"1184\"\u003e✅ Increases \u003cstrong data-start=\"1196\" data-end=\"1219\"\u003ebottom-end rigidity\u003c\/strong\u003e for boosted and high-RPM engines\u003cbr data-start=\"1252\" data-end=\"1255\"\u003e✅ Ideal for high-horsepower street builds, drag cars, and track use\u003cbr data-start=\"1322\" data-end=\"1325\"\u003e✅ Trusted in Atomic-built SOHC engines making 600–1000+hp\u003cbr data-start=\"1382\" data-end=\"1385\"\u003e✅ Compatible with factory and aftermarket fasteners (clearance check recommended)\u003c\/p\u003e\n\u003chr data-start=\"1468\" data-end=\"1471\" class=\"\"\u003e\n\u003ch3 data-start=\"1473\" data-end=\"1509\" class=\"\"\u003e🛠️ \u003cstrong data-start=\"1481\" data-end=\"1507\"\u003eWhy Add a Main Cap Girdle?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1510\" data-end=\"1804\" class=\"\"\u003e✔️ Reduces crankshaft deflection and cap walk at high RPM\u003cbr data-start=\"1567\" data-end=\"1570\"\u003e✔️ Improves bearing alignment and longevity\u003cbr data-start=\"1613\" data-end=\"1616\"\u003e✔️ Strengthens the block and helps avoid bottom-end failure\u003cbr data-start=\"1675\" data-end=\"1678\"\u003e✔️ Critical for turbocharged or competition-level SOHC builds\u003cbr data-start=\"1739\" data-end=\"1742\"\u003e✔️ Built to handle serious torsional load and drivetrain shock\u003c\/p\u003e\n\u003chr data-start=\"1806\" data-end=\"1809\" class=\"\"\u003e\n\u003ch3 data-start=\"1811\" data-end=\"1840\" class=\"\"\u003e📦 \u003cstrong data-start=\"1818\" data-end=\"1838\"\u003eWhat’s Included:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-start=\"1841\" data-end=\"1961\"\u003e\n\u003cli data-start=\"1841\" data-end=\"1890\" class=\"\"\u003e\n\u003cp data-start=\"1843\" data-end=\"1890\" class=\"\"\u003e1x Laser-cut \u003cstrong data-start=\"1856\" data-end=\"1888\"\u003e10mm steel main girdle plate\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1891\" data-end=\"1961\" class=\"\"\u003e\n\u003cp data-start=\"1893\" data-end=\"1961\" class=\"\"\u003eRequires fasteners and spacers specific to your build (not included)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":59052859686993,"sku":null,"price":460.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2115\/6365\/files\/Atomic_Mains_Steel_Girdle_EF-AU_SOHC_10mm_Thick_581abea0-32d8-4111-a4fc-cb75d0969789.jpg?v=1779068365","url":"https:\/\/longboostperformance.com\/products\/306255-ef-au","provider":"LongBoost Performance Parts","version":"1.0","type":"link"}