{"product_id":"je-pistons-sub-ej257-83mm-str-99-75mm-bore-cr-8-5-kit-set-of-4-pistons","title":"JE Pistons SUB EJ257 83mm STR 99.75mm Bore CR 8.5 Kit Forged Piston Set — Fits 2002-2012 Subaru Impreza WRX\/STI","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout JE Pistons\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eJE Pistons engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full JE Pistons lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eJE Pistons Forged Piston Kit for Subaru EJ257 (99.75mm Bore, CR 8.5, 83mm Stroke)\u003c\/h2\u003e\n\u003cp\u003eUnleash the full potential of your Subaru EJ257 engine with this high-performance forged piston kit from JE Pistons. Featuring a 99.75mm bore, a compression ratio of 8.5:1, and designed for an 83mm stroke, these pistons are precision-crafted in the USA from robust 2618 aluminum to handle extreme performance demands.\u003c\/p\u003e\n\u003ch3\u003eKey Features and Benefits:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Performance Material:\u003c\/strong\u003e Forged from 2618 aluminum, offering superior strength and resistance to high temperatures and pressures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngineered for Performance:\u003c\/strong\u003e Specifically designed for the Subaru EJ257 engine with an 83mm stroke to optimize power and reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized Bore Size:\u003c\/strong\u003e The 99.75mm bore provides a precise fit for enhanced engine performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFriction Reduction:\u003c\/strong\u003e Utilizes JE Pistons' advanced Forged Side Relief (FSR) design to minimize friction and parasitic power loss, while also reducing overall weight.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability Features:\u003c\/strong\u003e Includes skirt coating (application dependent) for reduced friction and wear, and an accumulator groove (application dependent) for improved ring seal and consistent power output.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Supplied with high-quality wrist pins, locks, and JE Pro Seal premium piston rings for a comprehensive solution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSA Made:\u003c\/strong\u003e Ensures top-tier manufacturing quality and reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis JE Pistons kit is the ultimate upgrade for Subaru WRX and STI owners seeking maximum power and engine longevity. Trust in JE Pistons' expertise for your high-performance build. Get the best engine components at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;\"\u003e\n\u003ch3 style=\"margin:0 0 8px;\"\u003eVehicle Fitment\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:0.92em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f0f0f0;text-align:left;\"\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eYears\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2008\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eForester\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSports 2.5 XT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2002-2012\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2004-2012\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2006-2007\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2006-2007\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX TR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2007\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX STI Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2009-2012\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX Premium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2010\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX STI Special Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2010-2012\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2010-2011\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eLegacy\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2.5GT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular JE Pistons products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/je-pistonspiston-ring-set-4-060\" style=\"color:#0066cc;text-decoration:none;\"\u003eJE Pistons Race Series Piston Ring Set 4.060 Bore — File Fit Plasma Moly\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/je-pistonswrist-pin-52-series-1-990-2-930-180-161-gram-1\" style=\"color:#0066cc;text-decoration:none;\"\u003eJE Pistons 52 Series Wrist Pin .990 x 2.930 — High-Strength Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/je-pistons-suzuki-drz-400-inv-dome-piston-kit\" style=\"color:#0066cc;text-decoration:none;\"\u003eJE Pistons DRZ-400 INV Dome Piston Kit — Fits 2000-2016 Suzuki DR-Z400, 2003-2006 Kawasaki\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/je-pistons-vw-2-8liter-vr6-kit-set-of-6-pistons\" style=\"color:#0066cc;text-decoration:none;\"\u003eJE Pistons VW 2.8L VR6 Forged Piston Kit — Fits 1992-1999 VW Corrado Golf Jetta Passat\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/je-pistons-vw-2-8liter-vr6-kit-set-of-6-pistons-1\" style=\"color:#0066cc;text-decoration:none;\"\u003eJE Pistons VW 2.8L VR6 Forged Piston Kit — Fits 1992-1999 VW Corrado Golf Jetta Passat\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript 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Engineered for extreme performance. Buy now at GGCRACING!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"JE Pistons\"},\"mpn\":\"296352\",\"url\":\"https:\/\/ggcracing.com\/products\/je-pistons-sub-ej257-83mm-str-99-75mm-bore-cr-8-5-kit-set-of-4-pistons\",\"offers\":{\"@type\":\"Offer\",\"price\":\"899.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/je-pistons-sub-ej257-83mm-str-99-75mm-bore-cr-8-5-kit-set-of-4-pistons\",\"sku\":\"JEP296352\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"JE Pistons\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=JE+Pistons\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"JE Pistons SUB EJ257 83mm STR 99.75mm Bore CR 8.5 Kit Forged Piston Set \\u2014 Fits 2002-2012 Subaru Impreza WRX\/STI\",\"item\":\"https:\/\/ggcracing.com\/products\/je-pistons-sub-ej257-83mm-str-99-75mm-bore-cr-8-5-kit-set-of-4-pistons\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the JE Pistons SUB EJ257 83mm STR 99.75mm Bore CR 8.5 Kit Forged Piston Set \\u2014 Fits 2 fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Use the fitment table above to confirm.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for JE Pistons?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the JE Pistons SUB EJ257 83mm STR 99.75mm Bore CR 8.5 Kit Forged Piston Set \\u2014 Fits 2?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"JE Pistons","offers":[{"title":"Default Title","offer_id":41454346993748,"sku":"JEP296352","price":899.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/dc0a484d739a19bbe8cf23f18435efd8_870b3af5-cfb2-4cdd-bf56-36397052d413.jpg?v=1721663011","url":"https:\/\/ggcracing.com\/en-co\/products\/je-pistons-sub-ej257-83mm-str-99-75mm-bore-cr-8-5-kit-set-of-4-pistons","provider":"GGCRACING INC","version":"1.0","type":"link"}