{"product_id":"manley-subaru-wrx-sti-valve-spring-and-retainer-kit-w-o-valve-locks-16-each","title":"Manley Subaru WRX\/STi Valve Spring and Retainer Kit (w\/o Valve Locks) (16 each)","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e26180\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298044972\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley Subaru WRX\/STi Valve Spring and Retainer Kit (w\/o Valve Locks) (16 each) 2002-2021\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eManley Performance Valve Spring and Retainer Kit (26180) equips 2002-2021 Subaru Impreza WRX and WRX STI models with EJ20 and EJ25 DOHC engines for race-level valvetrain reliability. Chrome-silicon alloy springs combine with titanium retainers to resist fatigue and deliver exact valve control at high RPMs in racing applications. This kit pairs with aggressive aftermarket camshafts to ensure stability and longevity under extreme turbocharged conditions over 30 PSI boost.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChrome-Silicon Alloy Springs:\u003c\/strong\u003e High-tensile strength and fatigue resistance support performance beyond 9000 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitanium Retainers:\u003c\/strong\u003e Lightweight 6AL4V titanium construction cuts valvetrain mass for quicker valve action and reduced stress\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16-Piece Kit:\u003c\/strong\u003e Full set includes 16 springs and 16 retainers for complete intake and exhaust valvetrain coverage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Engineering:\u003c\/strong\u003e Matched spring rates and dimensions ensure compatibility with EJ20 EJ25 stock or performance cylinder heads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-RPM Stability:\u003c\/strong\u003e Prevents valve float in turbocharged EJ engines with boost exceeding 30 PSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eValve locks not included order OEM Subaru or compatible aftermarket separately\u003c\/li\u003e\n\u003cli\u003eInspect springs for proper seating and preload during assembly\u003c\/li\u003e\n\u003cli\u003eShipped in protective foam-lined 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\u003eMeasure installed spring height and coil bind to match camshaft specs\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM valve locks and 11mm stem aftermarket valves\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\u003e2005-2006\u003c\/td\u003e\n\u003ctd\u003eSaab\u003c\/td\u003e\n\u003ctd\u003e9-2X\u003c\/td\u003e\n\u003ctd\u003eAero\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2014\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\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003ctd\u003e-\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\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010-2014\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003ctd\u003eSTI\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 professional race teams\u003c\/li\u003e\n\u003cli\u003eAll components manufactured in USA with aerospace-grade materials\u003c\/li\u003e\n\u003cli\u003eEngineered and dyno-tested for Subaru EJ engines in real-world racing\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 2015-2021 WRX STI EJ257 engines?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes fits all 2004-2021 STI models with 2.5L DOHC EJ257 including hatchback and sedan variants\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What materials are used in springs and retainers?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Springs made from chrome-silicon alloy retainers from 6AL4V titanium for strength and light weight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty covers this valvetrain kit?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Limited lifetime warranty on springs for fatigue failure when installed and used correctly\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 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 Secure foam-lined cardboard box 12in x 10in x 6in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.85 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":44305711857743,"sku":"MAN26180","price":345.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/manley-subaru-wrxsti-valve-spring-and-retainer-kit-wo-valve-locks-16-each-manley-performance.jpg?v=1772547285","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-subaru-wrx-sti-valve-spring-and-retainer-kit-w-o-valve-locks-16-each","provider":"Black Ops Auto Works","version":"1.0","type":"link"}