{"product_id":"tool-steel-heavy-duty-retainers","title":"Tool Steel Heavy Duty Retainers","description":"\u003ch4\u003eTool Steel Heavy Duty Valve Spring Retainers\u003c\/h4\u003e\u003cp\u003ePast 4,500 rpm — especially behind a high-lift camshaft — the factory retainer becomes the weak link in the valvetrain. These tool steel retainers are built for that load and work with any Hamilton 24-valve spring.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for 4,500+ rpm\u003c\/strong\u003e operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced mass\u003c\/strong\u003e for precise valve control behind aggressive cam profiles\u003c\/li\u003e\n\u003cli\u003eTool steel construction — substantially stronger than stock\u003c\/li\u003e\n\u003cli\u003eWorks with any Hamilton Dodge 24-valve spring\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eGood to Know\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHamilton specifies these retainers whenever the 110 lb competition springs are used\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLocks are not included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eCams running over .370\" lobe lift warrant titanium retainers instead\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003e1998.5–2007 Dodge Ram 5.9L Cummins 24-valve and 2007.5–2018 Ram 6.7L Cummins running Hamilton 24-valve spring packages.\u003c\/p\u003e","brand":"Hamilton Cams","offers":[{"title":"Default Title","offer_id":48949715337493,"sku":"07-s-004","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0845\/6844\/1109\/files\/PK-Shot-2-scaled.jpg?v=1747428374","url":"https:\/\/shop.davesusa.com\/products\/tool-steel-heavy-duty-retainers","provider":"Dave's Auto Center","version":"1.0","type":"link"}