{"product_id":"manley-04-subaru-wrx-sti-eh257-99-50mm-bore-std-size-8-5-1-dish-piston-set","title":"Manley 04+ Subaru WRX\/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Piston Set","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e632200C-4\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298085876\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley 04+ Subaru WRX\/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Piston Set\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis Manley Platinum Series piston set delivers forged construction for 2004 and later Subaru WRX and STI models equipped with the EJ257 2.5L engine. The 99.50mm standard bore and 8.5:1 compression ratio support tuned builds seeking durability under boost. Engine builders count on these pistons for consistent ring seal and long-term strength in high-horsepower applications.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2618 Alloy Forgings:\u003c\/strong\u003e High-silicon aluminum provides resistance to detonation and fatigue in forced-induction setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven Skirt Profiles:\u003c\/strong\u003e Cam and barrel shapes minimize friction and noise while maintaining cylinder wall contact\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Steel Wrist Pins:\u003c\/strong\u003e 793-20-20-20Z pins with wire locks ensure secure rod attachment under extreme loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoly Skirt Coatings:\u003c\/strong\u003e Reduce initial break-in wear and galling for smoother operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact Specifications:\u003c\/strong\u003e 99.50mm bore, -8cc dish (8.5:1 CR), 30.03mm compression height, 1.2\/1.2\/2.5mm rings included, 547g weight per piston\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm engine bore measures 99.50mm before installation\u003c\/li\u003e\n\u003cli\u003eStore in original packaging to protect coatings until assembly\u003c\/li\u003e\n\u003cli\u003eHandle with care to avoid nicks on ring grooves or skirts\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 of 30.03mm requires stock-length rods for proper deck clearance\u003c\/li\u003e\n\u003cli\u003eIncludes rings, pins, and locks. compatible with Subaru EJ257 rods\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Manley?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProven in professional race and street builds for decades\u003c\/li\u003e\n\u003cli\u003eForged components withstand 1000+ hp levels\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures tight tolerances\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 STI EJ257 engine?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes, designed for 2004-2021 Subaru STI EJ257 2.5L DOHC with stock 99.50mm bore\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What alloy and rings are used?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e 2618 T6 aluminum forgings with 1.2mm top, 1.2mm second, 2.5mm oil rings pre-installed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty coverage?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Manley offers a limited lifetime warranty against manufacturing defects when installed 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\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 set of 4 pistons, 10 x 8 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3 lbs shipping weight\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":41147033387087,"sku":"MAN632200C-4","price":808.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/products\/manley-04-subaru-wrxsti-eh257-99_50mm-bore-std-size-8_51-dish-piston-set-manley-performance.jpg?v=1772548236","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-04-subaru-wrx-sti-eh257-99-50mm-bore-std-size-8-5-1-dish-piston-set","provider":"Black Ops Auto Works","version":"1.0","type":"link"}