{"product_id":"manley-ford-4-6l-5-4l-dohc-nextek-series-high-performance-valve-springs-4-valves-per-cylinder","title":"Manley Ford 4.6L\/5.4L DOHC NexTek Series High Performance Valve Springs (4 valves per cylinder)","description":"\u003ch2\u003eManley Ford 4.6L\/5.4L DOHC NexTek Series High Performance Valve Springs (4 valves per cylinder)\u003c\/h2\u003e\u003cp\u003eThese Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines.\u003c\/p\u003e\u003cp\u003eThey're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life.\u003c\/p\u003e\u003cp\u003eThey feature a proprietary, multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufactured from “super clean” Hi-Tensile Chrome Silicon steel\u003c\/li\u003e\n\u003cli\u003eTip thickness designed to eliminate overload breakage\u003c\/li\u003e\n\u003cli\u003eShot-peened to MIL spec for maximum fatigue life\u003c\/li\u003e\n\u003cli\u003eComputer-aided modeling or designs minimizes valve bounce and valve gear separation\u003c\/li\u003e\n\u003cli\u003eTightly controlled open end flatness reduces valve stem side loading\u003c\/li\u003e\n\u003cli\u003eProprietary multi-step heat treating minimizes load loss\u003c\/li\u003e\n\u003cli\u003eOptimized “Select Size Fitting” between outer and inner springs to maximize harmonic dampening and reduce heat generated during operation\u003c\/li\u003e\n\u003cli\u003eMany offerings are a damperless design which eliminates unnecessary damper weight and reduces retainer wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2005-2006 Ford GT Base\u003c\/li\u003e\n\u003cli\u003e2007-2008 Ford Mustang Shelby GT500\u003c\/li\u003e\n\u003cli\u003e1999,2001 Ford Mustang SVT Cobra\u003c\/li\u003e\n\u003cli\u003e2000 Ford Mustang SVT Cobra R\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e32 - Valve Springs\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 221434-32\u003c\/li\u003e\n\u003cli\u003eManley products, due to their intended use, are sold without warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":48542256922876,"sku":"MAN221434-32","price":645.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1128\/7276\/files\/group-363b9d0a-026d-423d-b1c7-4c74cc9039af-800.jpg?v=1763889467","url":"https:\/\/jdcustomsusa.com\/products\/manley-ford-4-6l-5-4l-dohc-nextek-series-high-performance-valve-springs-4-valves-per-cylinder","provider":"JD Customs U.S.A","version":"1.0","type":"link"}