{"product_id":"manley-04-subaru-wrx-sti-ej257-std-stroke-99-75mm-25mm-bore-9-8-1-dish-piston-set-with-rings","title":"Manley 99.75mm STD Stroke +.25mm Bore Dish Piston Set | Subaru WRX STi (04+) (612102C-4)","description":"\u003ch1\u003eManley Performance Pistons\u003c\/h1\u003e\n\u003ch2\u003eFits 2004+ Subaru WRX STi with EJ257 Engine\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart #:\u003c\/strong\u003e 612102C-4\u003c\/p\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\nThe Manley Platinum Series piston set is engineered for high-performance Subaru WRX STi enthusiasts and professional engine builders seeking durability and precision. Designed specifically for the EJ257 engine, these pistons feature a 99.75mm stroke and a +0.25mm bore, optimized for enhanced power output and reliability. Crafted from premium 2618 alloy forgings, they deliver superior strength and thermal stability, making them ideal for both daily driving and aggressive tuning applications. Whether you're rebuilding your engine or upgrading for increased performance, these pistons provide a reliable foundation for your build.\n\nConstructed with proven cam and barrel skirt profiles, the pistons ensure optimal ring sealing and reduced piston slap, contributing to smoother operation and longevity. The moly skirt coatings on select part numbers reduce friction and wear, supporting consistent performance over time. Equipped with tool steel wrist pins, these pistons are built to withstand high loads and thermal stresses, making them suitable for high-horsepower applications.\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\nDesigned with high-quality materials and precision engineering, the Manley Platinum Series pistons offer:\n\u003cul\u003e\n\u003cli\u003e2618 aluminum forging for exceptional strength and durability\u003c\/li\u003e\n\u003cli\u003eOptimized 99.75mm stroke and +0.25mm bore for increased displacement\u003c\/li\u003e\n\u003cli\u003eTool steel wrist pins for enhanced load capacity\u003c\/li\u003e\n\u003cli\u003eMoly skirt coatings on select models to reduce friction and wear\u003c\/li\u003e\n\u003cli\u003eProven cam and barrel skirt profiles for reliable sealing and performance\u003c\/li\u003e\n\u003cli\u003eEngineered for high-performance Subaru EJ257 engines\u003c\/li\u003e\n\u003cli\u003eIdeal for rebuilds, tuning, and performance upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction \u0026amp; Design\u003c\/h3\u003e\nThese pistons are crafted from high-grade 2618 alloy forgings, known for their excellent strength-to-weight ratio and thermal properties. The design incorporates proven skirt profiles and moly coatings to minimize friction and enhance durability, ensuring consistent performance under demanding conditions. The tool steel wrist pins are precision-machined for a perfect fit, supporting high-stress operation and longevity.\n\n\u003ch3\u003ePerformance \u0026amp; Response\u003c\/h3\u003e\nThe Platinum Series pistons are engineered to support increased engine displacement and power output while maintaining reliable operation. Their robust construction helps improve throttle response and overall engine responsiveness, making them suitable for both street and track use. The optimized design ensures efficient combustion and heat management, contributing to a more responsive driving experience.\n\n\u003ch3\u003eInstallation \u0026amp; Fitment\u003c\/h3\u003e\nThese pistons are designed for straightforward installation in compatible EJ257 engines. Proper assembly requires standard engine rebuilding procedures, including bore sizing and ring installation. Professional installation is recommended to ensure optimal performance and longevity.\n\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\nThe package includes a complete set of pistons with rings and wrist pins, ready for installation in your Subaru WRX STi engine.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":51635932659999,"sku":"612102C-4","price":679.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0229\/3877\/files\/manley-performance-platinum-series-piston-set-9975mm-981-2006-2014-wrx-2004-2014-sti-2005-2009-lgt-2004-2013-fxt-612102c-4-131373.jpg?v=1779937752","url":"https:\/\/shop.wheelflip.com\/products\/manley-04-subaru-wrx-sti-ej257-std-stroke-99-75mm-25mm-bore-9-8-1-dish-piston-set-with-rings","provider":"WheelFlip","version":"1.0","type":"link"}