{"product_id":"b58-billet-main-caps","title":"B58 Billet Main Caps by 5150 AutoSport","description":"\u003ch2\u003e\u003cspan\u003e5150 AutoSport B58 Billet Main Caps\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAs power levels climb beyond \u003c\/span\u003e1,200+ horsepower\u003cspan\u003e, we've seen factory main caps begin to walk. Under extreme cylinder pressure and crankshaft loads, even the slightest cap movement can affect main bearing alignment, oil clearance, and ultimately bearing life.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOur \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCNC-machined billet steel main caps\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e are \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eheat treated\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for maximum strength and feature a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003edowel-pinned design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e to positively locate each cap and virtually eliminate cap movement under extreme loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBenefits of our Billet Main Caps:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCNC-machined from high-strength billet steel.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeat treated for maximum durability and strength.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eDowel-pinned design\u003cspan\u003e for precise cap location and reduced cap walk.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncreased rigidity over OEM cast main caps.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReduced main cap flex under extreme cylinder pressure.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMinimized crankshaft movement under high load.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore consistent main bearing bore geometry.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved crankshaft stability at high RPM and boost.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBetter bearing life and oil clearance consistency.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA much stronger foundation for high-horsepower engine builds.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen you're pushing an engine to its limits, every thousandth of an inch matters. Our billet, heat-treated, dowel-pinned main caps help keep the crankshaft exactly where it belongs, providing the bottom end with the stability needed to survive extreme horsepower and high-RPM abuse.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eImportant:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Billet main caps are\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003enot\u003cspan\u003e a simple bolt-on upgrade. The engine block and main caps \u003c\/span\u003emust\u003cspan\u003e be precision machined, followed by \u003c\/span\u003ealign boring and align honing\u003cspan\u003e, to restore perfect main bearing geometry and ensure proper bearing clearances.\u003c\/span\u003e\u003c\/p\u003e","brand":"5150 AutoSport","offers":[{"title":"Default Title","offer_id":53761717436723,"sku":"5150-BMC-B58","price":1199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/3827\/3587\/files\/IMG-0321.png?v=1785357409","url":"https:\/\/5150autosport.com\/fr\/products\/b58-billet-main-caps","provider":"5150 AutoSport","version":"1.0","type":"link"}