{"product_id":"manley-04-subaru-wrx-sti-eh257-99-75mm-bore-25mm-size-8-5-1-dish-piston-set","title":"Manley 04+ Subaru WRX\/STI EH257 99.75mm Bore +.25mm Size 8.5:1 Dish Piston Set","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e632202C-4\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298088037\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley 04+ Subaru WRX\/STI EH257 99.75mm Bore +.25mm Size 8.5:1 Dish Piston Set\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis Manley Platinum Series piston set delivers forged strength for 2004-2021 Subaru Impreza WRX\/STI models with EJ257 2.5L turbo engines. The 99.75mm bore +0.25mm oversize design with 8.5:1 compression ratio dish supports high-boost applications while maintaining reliability. Engine builders choose these pistons for their durability in racing and street performance builds.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2618-T61 Alloy Forgings:\u003c\/strong\u003e High-tensile strength material handles detonation and extreme cylinder pressures in turbocharged EJ257 engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven Skirt Profiles:\u003c\/strong\u003e Cam and barrel design with low-friction geometry reduces power loss and wear during high-RPM operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Steel Wrist Pins:\u003c\/strong\u003e H13 material HRC 38-44 provides superior wear resistance and secure connection to rods\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoly Skirt Coating:\u003c\/strong\u003e Graphite-moly finish minimizes scuffing, galling, and friction on cylinder walls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccumulator Groove:\u003c\/strong\u003e Controls ring flutter under boost for consistent sealing and power delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRings sold separately. recommend Manley 932K-4 ring set for proper groove fit\u003c\/li\u003e\n\u003cli\u003eSkirts require file fitting to achieve 0.0035-0.0045 inch piston-to-wall clearance\u003c\/li\u003e\n\u003cli\u003eSet ships balanced. verify rod and crank balance during assembly\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\u003eCompression height 30.52mm. confirm with head gasket and block deck height\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM or aftermarket rods. use moly or C5-A assembly lube on pins\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\u003e2004-2007\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\u003e2008-2014\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\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\u003e2004-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI EJ257\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\u003eProven in professional racing teams and tuner shops worldwide\u003c\/li\u003e\n\u003cli\u003eExact tolerances ensure drop-in reliability for Subaru EJ257 rebuilds\u003c\/li\u003e\n\u003cli\u003eBacked by decades of piston engineering for 4-cylinder turbo 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 this fit my 2006 Subaru STI EJ257 engine?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes, designed for all 2004-2021 EJ257-equipped WRX\/STI models including USDM and JDM variants with 99.5mm standard bore\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the piston weight and material?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Each piston weighs 405 grams. constructed from lightweight 2618-T61 forged aluminum alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty applies and are rings included?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Manley offers limited warranty against manufacturing defects. rings not included, order separately for custom bore fit\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 Protective foam-lined box 12in x 10in x 6in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":41147036237903,"sku":"MAN632202C-4","price":808.61,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/products\/manley-04-subaru-wrxsti-eh257-99_75mm-bore-_25mm-size-8_51-dish-piston-set-manley-performance.jpg?v=1772548297","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-04-subaru-wrx-sti-eh257-99-75mm-bore-25mm-size-8-5-1-dish-piston-set","provider":"Black Ops Auto Works","version":"1.0","type":"link"}