{"product_id":"manley-22440-1-valve-spring-spring-1-550-dbl-chr-sil","title":"Manley 22440-1 - Valve Spring, SPRING-1.550 DBL CHR SIL","description":"\u003cp\u003eManley 22440-1 - Valve Spring, SPRING-1.550 DBL CHR SIL\u003c\/p\u003e\u003cp\u003eManley Valve Spring, SPRING-1.550 DBL CHR SIL\u003c\/p\u003e\u003cp\u003eThe Manley Professional Series Valve Springs are engineered for serious performance builders and racers who demand reliable high-RPM control and long-lasting durability. Built from premium chrome-silicon and H-11 tool steels with precision heat treatment and shot-peening, these springs deliver robust tension and fatigue resistance across demanding applications ranging from oval track to the drag strip. Designed to maintain consistent spring pressure and minimize valve float under extreme load, they help keep your engine responsive and controlled when it matters most\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChrome silicon material\u003c\/li\u003e\n\u003cli\u003eDesigned for oval track and drag racing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProduct Market\u003c\/strong\u003e: \u003cspan\u003eDomestic\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAverage Gram Weight\u003c\/strong\u003e: \u003cspan\u003e147\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: \u003cspan\u003eEngine Valve Spring\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOuter Diameter of Outer Valve Spring\u003c\/strong\u003e: \u003cspan\u003e1.550\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInner Diameter of Outer Valve Spring\u003c\/strong\u003e: \u003cspan\u003e1.115\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInner Diameter of Inner Valve Spring\u003c\/strong\u003e: \u003cspan\u003e0.720\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Quantity\u003c\/strong\u003e: \u003cspan\u003e1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Series\u003c\/strong\u003e: \u003cspan\u003eProfessional Series\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Material\u003c\/strong\u003e: \u003cspan\u003eChrome Silicon\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Type\u003c\/strong\u003e: \u003cspan\u003eDouble\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Coil Bind Height\u003c\/strong\u003e: \u003cspan\u003e1.090\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Rate\u003c\/strong\u003e: \u003cspan\u003e614\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInstalled Pressure and Height\u003c\/strong\u003e: \u003cspan\u003e250 @ 1.850\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOpen Pressure and Height\u003c\/strong\u003e: \u003cspan\u003e680 @ 1.150\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIndustry\u003c\/strong\u003e: \u003cspan\u003eAutomotive\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine Type\u003c\/strong\u003e: \u003cspan\u003eICE\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Manley","offers":[{"title":"Default Title","offer_id":49937522852118,"sku":"BBPB-22440-1","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/1234558071174264e9f4b44e854df8cc.jpg?v=1758858872","url":"https:\/\/www.cspracing.com\/products\/manley-22440-1-valve-spring-spring-1-550-dbl-chr-sil","provider":"Complete Street Performance","version":"1.0","type":"link"}