{"product_id":"manley-subaru-ej257-100-25mm-bore-75mm-over-size-bore-8-5-1-cr-dish-piston-set-with-rings","title":"Manley Subaru EJ257 100.25mm Bore +.75mm Over Size Bore 8.5:1 CR Dish Piston Set with Rings","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e612007C-4\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298107790\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley Subaru EJ257 100.25mm Bore +.75mm Over Size Bore 8.5:1 CR Dish Piston Set with Rings 2004-2021 WRX STI\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis Manley Platinum Series piston set delivers forged strength for Subaru EJ257 engines in 2004-2021 WRX STI models. The 100.25mm bore +.75mm oversize design with 8.5:1 compression ratio dish top supports high-boost turbo builds while maintaining durability. Includes premium rings for a complete ready-to-install package trusted by engine builders.\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-strength material handles extreme heat and pressure in performance applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven Skirt Profiles:\u003c\/strong\u003e Optimized cam and barrel shapes reduce friction and wear for longer engine life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Steel Wrist Pins:\u003c\/strong\u003e Heavy-duty pins resist fatigue in high-rpm turbocharged setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoly Skirt Coatings:\u003c\/strong\u003e Low-friction coating minimizes scuffing and improves ring seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Rings:\u003c\/strong\u003e Premium file-fit rings ensure precise sealing and compression\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCylinder honing required to 100.25mm bore specification\u003c\/li\u003e\n\u003cli\u003eCompression height 30.25mm rod length 130.5mm stroke 79mm\u003c\/li\u003e\n\u003cli\u003eSet of 4 pistons weighs 1440 grams total approximately 360g each\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\u003eFile-fit rings to achieve 0.003-0.004 inch end gap\u003c\/li\u003e\n\u003cli\u003eCompatible with stock or aftermarket rods verify wrist pin fit\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\u003e2004-2021\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\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eLegacy\u003c\/td\u003e\n\u003ctd\u003e2.5 GT Spec.B\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 Hatchback\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\u003eSedan\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\u003eEngineers design for motorsport demands with real-world testing\u003c\/li\u003e\n\u003cli\u003eConsistent quality from U.S. manufacturing facility\u003c\/li\u003e\n\u003cli\u003eBacked by decades of experience in high-performance pistons\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 EJ257 engines for this piston set?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Fits 2004-2021 Impreza WRX STI and 2005-2009 Legacy 2.5 GT Spec.B with EJ257 block confirm bore size\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What alloy and coatings are on these pistons?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e 2618-T61 aluminum forgings with moly skirt coating for reduced friction and tool steel wrist pins\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What preparation is needed before installation?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Hone cylinders to 100.250-100.260mm file rings to spec professional balancing advised for best results\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 Secure Manley box 12 x 8 x 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 6 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":41898959077455,"sku":"MAN612007C-4","price":741.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/manley-subaru-ej257-100_25mm-bore-_75mm-over-size-bore-8_51-cr-dish-piston-set-with-rings-manley-performance.jpg?v=1772548795","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-subaru-ej257-100-25mm-bore-75mm-over-size-bore-8-5-1-cr-dish-piston-set-with-rings","provider":"Black Ops Auto Works","version":"1.0","type":"link"}