{"product_id":"gsc-p-d-subaru-ej-series-dual-conical-valve-spring-kit","title":"GSC P-D Subaru EJ Series Dual Conical Valve Spring Kit","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e5074\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eGSC P-D Subaru EJ Series Dual Conical Valve Spring Kit for 2002-2021 WRX STI Forester XT Legacy GT\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe GSC P-D Subaru EJ Series Dual Conical Valve Spring Kit PN 5074 delivers reliable valvetrain control for EJ20 and EJ25 engines in Subaru WRX STI Forester XT Legacy GT and similar models. Dual conical springs paired with chromoly retainers maintain precise valve action up to 10 000 RPM to stop valve float in boosted or high rev applications. Kit includes 16 springs and 16 retainers for full coverage on 4 cylinder heads.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Conical Design:\u003c\/strong\u003e Lowers overall mass reduces harmonics and valve train noise for consistent high RPM performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Pressure:\u003c\/strong\u003e 120 lbs at 1.720 inch installed height provides firm control without excessive wear on cams or seats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Pressure:\u003c\/strong\u003e 280 lbs at 0.920 inch lift supports aggressive cam profiles and boost levels over 30 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring Rate:\u003c\/strong\u003e 220 lbs per inch with coil bind at 1.150 inch enables 0.920 inch max lift safely\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Nitride processed high tensile steel springs with shot peening and chromoly retainers for durability in racing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVerify valve stem to retainer clearance before install especially with oversized valves\u003c\/li\u003e\n\u003cli\u003eSprings designed for stock or ported cylinder heads inspect guides for wear\u003c\/li\u003e\n\u003cli\u003eSecure packaging protects components during transit\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\u003eMeasure installed height on each spring location shim as needed for even pressures\u003c\/li\u003e\n\u003cli\u003eRequires valve spring compressor tool compatible with Subaru EJ 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\u003e2002-2007\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza WRX\u003c\/td\u003e\n\u003ctd\u003eSTI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2009\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eForester\u003c\/td\u003e\n\u003ctd\u003eXT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eLegacy\u003c\/td\u003e\n\u003ctd\u003eGT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eOutback\u003c\/td\u003e\n\u003ctd\u003eXT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2001\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eRS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose GSC P-D?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMotorsport proven in drag road race and rally Subaru builds\u003c\/li\u003e\n\u003cli\u003eCNC wound and tested for consistent load across all springs\u003c\/li\u003e\n\u003cli\u003eDirect replacement with exact OEM geometry for plug and play fit\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 this kit fit my 2006 WRX EJ255?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes direct bolt on for all EJ255 EJ257 EJ205 heads in listed models no modifications needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What materials are used in the springs and retainers?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e High tensile steel springs with nitride finish and shot peening chromoly steel retainers for strength and heat resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty and install process?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Lifetime warranty on springs against failure retainers 1 year professional install advised with height checks\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 or FedEx\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 Foam protected box 12 x 9 x 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":39735888871503,"sku":"GSC5074","price":640.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/gsc-p-d-subaru-ej-series-dual-conical-valve-spring-kit-valve-springs-retainers-gsc-power-division.jpg?v=1717523153","url":"https:\/\/www.blackopsautoworks.com\/products\/gsc-p-d-subaru-ej-series-dual-conical-valve-spring-kit","provider":"Black Ops Auto Works","version":"1.0","type":"link"}