{"product_id":"gsc-p-d-4b11t-23-8n-chrome-polished-exhaust-valve-30mm-head-1mm-set-8","title":"GSC P-D 4B11T 23-8N Chrome Polished Exhaust Valve - 30mm Head (+1mm) - SET 8","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e2023-8\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eGSC P-D 4B11T 23-8N Chrome Polished Exhaust Valve - 30mm Head (+1mm) - SET 8 for 2008-2015 Mitsubishi Lancer Evolution X\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eGSC Power-Division exhaust valves deliver reliable performance for the 4B11T engine in 2008-2015 Mitsubishi Lancer Evolution X models. This set of 8 features a 30mm head diameter with +1mm oversize for greater exhaust flow during high-RPM and boosted operation. The chrome polished finish and 23-8N stainless steel construction handle extreme heat in Evo X builds.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e23-8N Stainless Steel:\u003c\/strong\u003e Forged one-piece design withstands high exhaust gas temperatures in turbocharged 4B11T engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChrome Polished Finish:\u003c\/strong\u003e Improves heat dissipation and resists carbon buildup for longer valve life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30mm Head Diameter (+1mm):\u003c\/strong\u003e Increases exhaust flow over stock for better top-end power and response\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.95mm Stem Diameter:\u003c\/strong\u003e Matches OEM guides with precise tolerances for secure fit and sealing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e108.67mm Overall Length:\u003c\/strong\u003e Direct replacement with 9mm tip length and 2.5mm back-cut for coil spring compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePair with matching +1mm valve seats for proper clearance and sealing\u003c\/li\u003e\n\u003cli\u003eInspect valve guides during installation for wear\u003c\/li\u003e\n\u003cli\u003ePackaged in protective GSC box to prevent damage\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\u003eMachine valve seats to accommodate +1mm oversize head diameter\u003c\/li\u003e\n\u003cli\u003eCompatible with GSC valve springs and retainers for 4B11T\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\u003e2008-2015\u003c\/td\u003e\n\u003ctd\u003eMitsubishi\u003c\/td\u003e\n\u003ctd\u003eLancer\u003c\/td\u003e\n\u003ctd\u003eEvolution X GSR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2015\u003c\/td\u003e\n\u003ctd\u003eMitsubishi\u003c\/td\u003e\n\u003ctd\u003eLancer\u003c\/td\u003e\n\u003ctd\u003eEvolution X MR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2015\u003c\/td\u003e\n\u003ctd\u003eMitsubishi\u003c\/td\u003e\n\u003ctd\u003eLancer\u003c\/td\u003e\n\u003ctd\u003eEvolution X Final\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose GSC Power-Division?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProven in professional racing Evo X engines worldwide\u003c\/li\u003e\n\u003cli\u003eFocus on valvetrain durability for high-boost reliability\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures consistent valve geometry\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 my 2010 Evo X GSR?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes, these are direct replacements for all 2008-2015 Lancer Evolution X models with the 4B11T engine including GSR, MR, and Final Edition submodels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material and finish are used?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Forged from 23-8N stainless steel with swirl polishing on the face and chrome polishing on the stem and head for heat resistance and sealing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty and install advice?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e GSC offers a limited lifetime warranty against defects. Professional installation required due to oversize head needing seat machining\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 Standard ground shipping\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 Secure GSC box approximately 12 x 8 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.1 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":40341598077007,"sku":"GSC2023-8","price":162.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/Screenshot2024-06-04at1.00.53PM.png?v=1717520536","url":"https:\/\/www.blackopsautoworks.com\/products\/gsc-p-d-4b11t-23-8n-chrome-polished-exhaust-valve-30mm-head-1mm-set-8","provider":"Black Ops Auto Works","version":"1.0","type":"link"}