{"product_id":"mcs524593","title":"Kibblewhite KPMI, Valve Spring Kit. .415\" Lift. Steel Top Collars for 1966-Early 1979 Shovelhead - 20-20435","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eReduces total valve train mass. Great for OEM rebuilds with stock specifications. The springs are manufactured from the highest quality clean chrome silicone wire; shot peened and heat treated for maximum fatigue life. Kit includes springs; upper collars; lower collars; and valve keys. Max valve lift: .415\". Installed height: 1.375\". Seat pressure 129 lbs. Open pressure: 272 lbs. @ .415\" valve lift. Note: With .565\" diameter valve guides.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e66-E79 Shovelhead (NU)\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Kibblewhite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Motor parts \u0026gt; Valve springs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit:\u003c\/strong\u003e KIT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct code:\u003c\/strong\u003e 524593\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePart Numbers\u003c\/h2\u003e\u003cp\u003eMCS Part Number: 524593\u003cbr\u003eManufacturer Part Number: 20-20435\u003c\/p\u003e","brand":"Kibblewhite","offers":[{"title":"Default Title","offer_id":57377359397251,"sku":"MCS524593","price":135.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1329\/4265\/files\/524593k_7335df7a-fb58-43fc-a842-514e008a1599.jpg?v=1775579876","url":"https:\/\/hogparts.co.uk\/products\/mcs524593","provider":"Hogparts UK Ltd","version":"1.0","type":"link"}