{"product_id":"manley-2011-chrysler-dodge-6-4l-hemi-w-triple-groove-1-654-race-master-exhaust-valves-set-of-8","title":"Manley 2011+ Chrysler\/Dodge 6.4L Hemi w\/ Triple Groove (1.654) Race Master Exhaust Valves (Set of 8)","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e12331-8\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298079288\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley 2011+ Chrysler\/Dodge 6.4L Hemi w\/ Triple Groove (1.654) Race Master Exhaust Valves (Set of 8)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eManley Race Series exhaust valves deliver reliable performance for 2011 and newer Chrysler Dodge and Jeep models equipped with the 6.4L HEMI engine. This set of 8 features a 1.654 inch head diameter and triple groove design built to handle the stresses of bracket drag oval track and high RPM operation up to 8000 RPM. Precision construction ensures consistent exhaust flow and durability in demanding race conditions.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInconel XH428 Material:\u003c\/strong\u003e High nickel content alloy resists extreme exhaust gas temperatures over 1600 degrees F for long lasting strength in race applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple Valve Lock Grooves:\u003c\/strong\u003e Provides secure keeper retention preventing valve loss at elevated engine speeds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwirl Polished Heads:\u003c\/strong\u003e Enhances exhaust gas evacuation reduces turbulence and supports higher horsepower output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBead Blasted Stems:\u003c\/strong\u003e Minimizes guide friction improves heat transfer and extends valve life under high load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.654 Inch Head Diameter:\u003c\/strong\u003e Matches OEM exhaust port sizing while increasing flow capacity for 6.4L HEMI cylinder heads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eValve specs include 1.654 inch head diameter 0.3725 inch stem diameter and 4.880 inch overall length\u003c\/li\u003e\n\u003cli\u003ePair with compatible valve springs and retainers for full race setup\u003c\/li\u003e\n\u003cli\u003ePackaged in protective case for safe handling and storage\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 valve to piston clearance especially with aftermarket cams or pistons\u003c\/li\u003e\n\u003cli\u003eCompatible with multi-layer steel head gaskets and stock or ported 6.4L HEMI heads\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\u003eR\/T 6.4L\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\u003eR\/T 6.4L\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\u003eSRT8 6.4L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2023\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eDurango\u003c\/td\u003e\n\u003ctd\u003eR\/T 6.4L\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\u003eSRT8 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\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\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 valves to championship winning race teams\u003c\/li\u003e\n\u003cli\u003eEvery valve undergoes rigorous quality checks for dimensional accuracy\u003c\/li\u003e\n\u003cli\u003eAdvanced metallurgy tailored specifically for high performance HEMI engines\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 Will these valves fit 2015 and newer 6.4L HEMI models in Dodge Challenger R\/T?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes they directly replace OEM exhaust valves in 2011-2023 6.4L HEMI equipped Challenger R\/T Charger R\/T and similar models with matching head design\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material are these exhaust valves made from?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Constructed from Inconel XH428 a nickel chromium alloy engineered for superior heat resistance in exhaust ports handling over 1600 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty on these valves?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Manley provides a limited warranty against manufacturing defects when installed and used per recommendations\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 Securely boxed 8 x 6 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.80 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default 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