{"product_id":"manley-performance-ej257-subaru-wrx-sti-piston-set-with-rings-04-models-std-stroke-5mm-bore","title":"Manley Performance EJ257 Subaru WRX STI Piston Set with Rings - 04+ Models, STD Stroke, +.5mm Bore","description":"Our signature \"Platinum Series\" pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. Join the ranks of professional engine builders and tuners who rely on Manley pistons for superior performance and durability.\n\u003cul\u003e\n  \u003cli\u003eChrome Moly Wrist Pins: Premium Chrome Moly wrist pins come standard with our Standard Series Pistons. For select SKUs, we offer wrist pin upgrades to 9310 and Turbo Tuff\/DLC alloys, providing additional durability.\u003c\/li\u003e\n  \u003cli\u003eUnique Fixturing: Manley's unique fixturing allows for skirt turning and ring groove machining in a single operation, ensuring ultimate ring groove to skirt squareness.\u003c\/li\u003e\n  \u003cli\u003eExacting Ring Lands and Grooves: We adhere to strict standards for piston ring lands and grooves, resulting in enhanced ring seal and more power.\u003c\/li\u003e\n  \u003cli\u003eCam and Barrel Profiles: Our pistons boast cam and barrel (skirt) profiles that generate substantial power while being gentle on cylinder walls.\u003c\/li\u003e\n  \u003cli\u003e2618 Alloy Forgings: We use domestic 2618 alloy forgings, ensuring superior strength and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Manley Performance EJ257 piston set is designed specifically for 2004 and newer Subaru WRX STI models, offering exceptional strength and performance for high-performance engine builds. Crafted from premium 2618 alloy forgings, these pistons deliver superior durability and thermal stability, making them ideal for both street and racing applications. The set includes pistons with a standard 100mm stroke and a +.5mm bore, providing a reliable upgrade for enthusiasts seeking increased power and efficiency. \u003cbr\u003eManley's pistons feature cam and barrel profiles optimized to generate substantial power while being gentle on cylinder walls, ensuring longevity and consistent performance. Each piston is machined with precise ring lands and grooves, adhering to strict quality standards to improve ring seal and boost engine output. The unique fixturing process used during manufacturing allows for skirt turning and ring groove machining in a single operation, ensuring perfect squareness and fitment. \u003cbr\u003eStandard components include chrome moly wrist pins, which provide excellent durability, with options to upgrade to 9310 or Turbo Tuff\/DLC alloys for enhanced resistance under demanding conditions. These pistons are compatible with a wide range of Subaru Impreza models from 2004 to 2012, offering a versatile solution for engine builders. Please note that these pistons are not carb approved but require carb acknowledgment during installation. They are suitable for air freight shipping and are intended for professional use. Trust Manley's expertise and quality craftsmanship to deliver the performance and reliability your high-powered Subaru engine demands.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e2618 alloy forgings for superior strength and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCam and barrel (skirt) profiles designed for power and minimal wear\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eExacting ring lands and grooves for enhanced sealing and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUnique fixturing ensures precise ring groove to skirt squareness\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChrome moly wrist pins standard, with upgrade options to 9310 and Turbo Tuff\/DLC alloys\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2004 Subaru Impreza WRX STI\u003cbr\u003e\n2005 Subaru Impreza WRX STI\u003cbr\u003e\n2006 Subaru Impreza WRX STI\u003cbr\u003e\n2007 Subaru Impreza WRX STI\u003cbr\u003e\n2007 Subaru Impreza WRX STI Limited\u003cbr\u003e\n2008 Subaru Impreza WRX STI\u003cbr\u003e\n2009 Subaru Impreza WRX STI\u003cbr\u003e\n2010 Subaru Impreza WRX STI\u003cbr\u003e\n2010 Subaru Impreza WRX STI Special Edition\u003cbr\u003e\n2011 Subaru Impreza WRX STI\u003cbr\u003e\n2011 Subaru Impreza WRX STI Limited\u003cbr\u003e\n2012 Subaru Impreza WRX STI\u003cbr\u003e\n2012 Subaru Impreza WRX STI Limited\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":53604365730065,"sku":"612005C-4","price":699.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/538828877b1fbb2fecf713045c8f4edc.jpg?v=1779982498","url":"https:\/\/shoprenegade.com\/products\/manley-performance-ej257-subaru-wrx-sti-piston-set-with-rings-04-models-std-stroke-5mm-bore","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}