{"product_id":"manley-subaru-ej257-99-75mm-25mm-bore-8-5-1-dish-platinum-series-piston-set-with-rings","title":"Manley Subaru EJ257 99.75mm +.25mm Bore 8.5:1 Dish Platinum Series Piston Set with Rings","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e612202C-4\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298107875\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley Subaru EJ257 99.75mm +.25mm Bore 8.5:1 Dish Platinum Series Piston Set with Rings 2004-2021 WRX STI\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eUpgrade your Subaru EJ257 2.5L turbo engine with this Manley Platinum Series piston set designed for 2004-2021 WRX STI models. The 99.75mm bore (+.25mm oversize) and 8.5:1 dish configuration support high-boost applications while maintaining reliability. Each set includes premium rings for a complete, balanced assembly ready for professional engine builds.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2618 T6 Alloy Forgings:\u003c\/strong\u003e High-temperature aluminum alloy provides strength to withstand extreme boost pressures and RPMs in turbocharged EJ257 engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Skirt Profiles:\u003c\/strong\u003e Proven cam and barrel skirt designs minimize friction, reduce wear, and ensure quiet operation under load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Steel Wrist Pins:\u003c\/strong\u003e Heavy-duty 21mm x 63mm pins with wire locks deliver secure rod connection and long-term durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoly Skirt Coating:\u003c\/strong\u003e Applied to select surfaces to prevent scuffing, galling, and cylinder wall damage during break-in and operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Ring Pack Included:\u003c\/strong\u003e Steel top ring, ductile iron second ring, and three-piece oil ring set with pre-gapped rings for exact 99.75mm bore fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBore engine block to 99.75mm (3.928 inches) prior to installation\u003c\/li\u003e\n\u003cli\u003ePistons balanced as a matched set of four to 388 grams each\u003c\/li\u003e\n\u003cli\u003eShips in protective Manley packaging for damage-free delivery\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\u003eRequires cylinder honing to 99.75mm with 45-degree crosshatch pattern\u003c\/li\u003e\n\u003cli\u003eCompatible with stock EJ257 connecting rods (130mm length) and 79mm stroke crankshaft\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 WRX STI\u003c\/td\u003e\n\u003ctd\u003eAll (EJ257)\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 WRX STI\u003c\/td\u003e\n\u003ctd\u003eAll (EJ257)\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 STI\u003c\/td\u003e\n\u003ctd\u003eAll (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\u003eEngine builders and tuners select Manley for consistent results in competition engines\u003c\/li\u003e\n\u003cli\u003eForged construction handles 40+ psi boost levels with repeated dyno passes\u003c\/li\u003e\n\u003cli\u003ePrecision machining includes 30mm compression height for exact deck clearance\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 Which Subaru models use the EJ257 engine for this piston set?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Fits all 2004-2021 WRX STI models equipped with the EJ257 2.5L DOHC turbo engine including hatchback and sedan variants\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What alloy and coatings are used on these pistons?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Made from 2618 T6 aluminum alloy forgings with moly skirt coating, accumulator grooves, and nickel wrist pin bores for heat resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is included and any warranty details?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Complete set of 4 pistons, rings, wrist pins, and locks included. backed by Manley limited warranty against manufacturing defects\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 Manley branded 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":40404443398223,"sku":"MAN612202C-4","price":741.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/manley-subaru-ej257-99_75mm-_25mm-bore-8_51-dish-platinum-series-piston-set-with-rings-manley-performance.jpg?v=1772547376","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-subaru-ej257-99-75mm-25mm-bore-8-5-1-dish-platinum-series-piston-set-with-rings","provider":"Black Ops Auto Works","version":"1.0","type":"link"}