{"product_id":"manley-chrysler-hemi-6-4l-nextek-series-high-performance-valve-springs-650-max-lift","title":"Manley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs .650 Max Lift","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e221439-16\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298023427\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs .650 Max Lift (2011-2023)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eManley NexTek Series valve springs deliver reliable valvetrain control for Chrysler 6.4L Hemi engines with up to .650 max lift cams. This set of 16 beehive springs with chromoly retainers fits 2011-2023 Dodge Challenger Charger Chrysler 300 Jeep Grand Cherokee SRT and Ram 2500\/3500 models. They maintain stability at high RPM to support increased power and prevent valve float.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeehive Design:\u003c\/strong\u003e Lowers overall mass reduces harmonics and improves high RPM durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e.650 Max Lift:\u003c\/strong\u003e Clears aggressive cam profiles without coil bind down to 1.090 installed height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Pressure:\u003c\/strong\u003e 155 lbs at 1.780 height for firm control and consistent sealing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Pressure:\u003c\/strong\u003e 415 lbs at .650 lift handles high boost and RPM loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring Rate:\u003c\/strong\u003e 140 lbs\/in provides precise valve timing across the RPM range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSet includes 16 springs and matching chromoly steel retainers for complete valvetrain upgrade\u003c\/li\u003e\n\u003cli\u003eBuilt from chrome silicon vanadium alloy steel for heat resistance and fatigue life\u003c\/li\u003e\n\u003cli\u003ePackaged for protection during shipping weighs 5.1 lbs box 14 x 14 x 4 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eVerify installed height 1.780 check retainer seal and coil bind clearances\u003c\/li\u003e\n\u003cli\u003ePair with 10 degree steel locks for secure valve retention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2011-2023\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eChallenger\u003c\/td\u003e\n\u003ctd\u003e6.4L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2011-2023\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eCharger\u003c\/td\u003e\n\u003ctd\u003e6.4L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2012-2023\u003c\/td\u003e\n\u003ctd\u003eChrysler\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003e6.4L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2012-2021\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eGrand Cherokee\u003c\/td\u003e\n\u003ctd\u003eSRT 6.4L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2023\u003c\/td\u003e\n\u003ctd\u003eRam\u003c\/td\u003e\n\u003ctd\u003e2500\u003c\/td\u003e\n\u003ctd\u003e6.4L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2023\u003c\/td\u003e\n\u003ctd\u003eRam\u003c\/td\u003e\n\u003ctd\u003e3500\u003c\/td\u003e\n\u003ctd\u003e6.4L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Manley?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDecades of experience supplying valvetrain parts to racers and builders\u003c\/li\u003e\n\u003cli\u003eStrict quality control with dyno tested designs for real world performance\u003c\/li\u003e\n\u003cli\u003eDirect fit engineering matches OEM specs while handling extreme conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Which 6.4L Hemi models does this fit?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Fits 2011-2023 Dodge Challenger Charger 2012-2023 Chrysler 300 2012-2021 Jeep Grand Cherokee SRT and 2014-2023 Ram 2500\/3500 all 6.4L V8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What materials are used in these springs?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Heat treated chrome silicon vanadium steel springs paired with strong chromoly steel retainers for longevity under high stress\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What installation steps are needed?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Professional setup advised measure spring heights pressures and clearances use matching locks for optimal valvetrain function\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective box 14 x 14 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5.1 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":40404406272079,"sku":"MAN221439-16","price":446.28,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/manley-chrysler-hemi-6_4l-nextek-series-high-performance-valve-springs-_650-max-lift-manley-performance.jpg?v=1772547371","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-chrysler-hemi-6-4l-nextek-series-high-performance-valve-springs-650-max-lift","provider":"Black Ops Auto Works","version":"1.0","type":"link"}