{"product_id":"je-pistons-sub-sti-ej257-99-75mm-bore-cr-9-5-kit-set-of-4-pistons","title":"JE Pistons Subaru STI EJ257 Forged Piston Kit 99.75mm Bore CR 9.5:1 Set of 4 — Fits Subaru STI EJ257","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 Subaru STI EJ257 Forged Piston Kit - 99.75mm Bore, 9.5:1 CR\u003c\/h2\u003e\n\u003cp\u003eEnhance the power and durability of your Subaru STI EJ257 engine with this high-performance forged piston kit from JE Pistons. Expertly crafted in the USA from premium 2618 aluminum, these pistons are engineered to meet the demands of aggressive performance builds and competitive racing environments.\u003c\/p\u003e\n\u003ch3\u003eKey Features for Maximum Performance:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Strength:\u003c\/strong\u003e Constructed using 2618 aluminum, providing exceptional tensile strength and resistance to deformation under extreme pressure and heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngineered for EJ257:\u003c\/strong\u003e Precisely designed for the Subaru STI EJ257 engine, offering a 99.75mm bore and a 9.5:1 compression ratio for optimized power delivery and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Friction \u0026amp; Weight:\u003c\/strong\u003e Incorporates JE Pistons' proprietary Forged Side Relief (FSR) design to minimize friction between the piston skirt and cylinder wall, reducing power loss. A shorter wrist pin also contributes to a lighter overall piston weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWear Protection:\u003c\/strong\u003e Features a durable skirt coating (application dependent) that reduces friction and wear, extending the life of both the pistons and cylinder walls while also promoting quieter operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Ring Seal:\u003c\/strong\u003e Includes an accumulator groove (application dependent) to effectively manage combustion gas pressure, preventing ring flutter and ensuring a consistent, reliable seal for maximum power.\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, ensuring a perfect fit and optimal performance from the start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the USA:\u003c\/strong\u003e Manufactured to the highest standards in the United States, ensuring unparalleled quality and reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor Subaru STI enthusiasts looking to build a formidable engine, this JE Pistons kit offers the strength, precision, and performance needed to excel. Elevate your build with components trusted by professionals. Purchase this essential upgrade from GGCRACING today.\u003c\/p\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 type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"JE Pistons Subaru STI EJ257 Forged Piston Kit 99.75mm Bore CR 9.5:1 Set of 4 \\u2014 Fits Subaru STI EJ257\",\"description\":\"Upgrade your Subaru STI EJ257 with JE Pistons Forged Piston Kit (99.75mm, 9.5:1 CR). High-strength 2618 aluminum for extreme performance. Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"JE Pistons\"},\"mpn\":\"310937\",\"url\":\"https:\/\/ggcracing.com\/products\/je-pistons-sub-sti-ej257-99-75mm-bore-cr-9-5-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-sti-ej257-99-75mm-bore-cr-9-5-kit-set-of-4-pistons\",\"sku\":\"JEP310937\"}}\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 Subaru STI EJ257 Forged Piston Kit 99.75mm Bore CR 9.5:1 Set of 4 \\u2014 Fits Subaru STI EJ257\",\"item\":\"https:\/\/ggcracing.com\/products\/je-pistons-sub-sti-ej257-99-75mm-bore-cr-9-5-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 Subaru STI EJ257 Forged Piston Kit 99.75mm Bore CR 9.5:1 Set of 4 \\u2014 F fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@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 Subaru STI EJ257 Forged Piston Kit 99.75mm Bore CR 9.5:1 Set of 4 \\u2014 F?\",\"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":41454373503060,"sku":"JEP310937","price":899.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/dc0a484d739a19bbe8cf23f18435efd8_53475e28-723f-4467-a351-c2f0f0cd9d51.jpg?v=1721663219","url":"https:\/\/ggcracing.com\/en-co\/products\/je-pistons-sub-sti-ej257-99-75mm-bore-cr-9-5-kit-set-of-4-pistons","provider":"GGCRACING INC","version":"1.0","type":"link"}