{"product_id":"manley-04-subaru-wrx-sti-ej257-75mm-de-stroked-100mm-5mm-bore-8-5-1-dish-piston-set-w-rings","title":"Manley 04+ Subaru WRX STi (EJ257) 75mm DE-STROKED 100mm +.5mm Bore 8.5:1 Dish Piston Set | Subaru WRX STi (04+), 75mm DE-STROKED, 100mm Bore (621005C-4)","description":"\u003ch1\u003eManley Performance Pistons\u003c\/h1\u003e\n\u003ch2\u003eFits Subaru WRX STi 2004+ with EJ257 Engine\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart #:\u003c\/strong\u003e 621005C-4\u003c\/p\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\nThe Manley Platinum Series piston set is a high-performance upgrade designed for Subaru WRX STi enthusiasts and professional tuners seeking durability and consistent power output. Crafted from 2618 alloy forgings, these pistons are engineered to withstand the rigors of high-performance applications, making them ideal for turbocharged engines that demand reliability and strength. Whether you're building a custom engine or upgrading your existing setup, these pistons provide a robust foundation for enhanced performance and longevity.\nThe set features proven cam and barrel skirt profiles, ensuring optimal fitment and reduced friction. Tool steel wrist pins contribute to durability under high-stress conditions, while moly skirt coatings on select part numbers help reduce wear and improve heat resistance. Designed to support aggressive tuning and increased boost levels, these pistons help your engine maintain integrity during demanding driving conditions.\n\u003ch3\u003eKey Features\u003c\/h3\u003e\nBuilt with premium 2618 alloy forgings for superior strength and thermal stability, these pistons feature a 75mm bore and a 8.5:1 compression ratio, tailored for performance applications. The design incorporates proven skirt profiles to minimize friction and enhance durability, while the moly coatings on select parts provide additional wear resistance. The inclusion of tool steel wrist pins ensures a secure fit and long-lasting performance, making these pistons suitable for high-horsepower builds. Precision-machined for exact fitment, they support reliable combustion and consistent power delivery.\n\u003ch3\u003eConstruction \u0026amp; Design\u003c\/h3\u003e\nThese pistons are crafted from high-quality 2618 aluminum alloy forgings, known for their excellent strength-to-weight ratio and thermal properties. The design includes carefully engineered skirt profiles and moly coatings to optimize heat dissipation and reduce friction, contributing to improved engine efficiency and durability.\n\u003ch3\u003ePerformance \u0026amp; Response\u003c\/h3\u003e\nDesigned to support high-performance tuning, these pistons help improve engine response and power output. Their robust construction ensures reliable operation under increased boost pressures, providing confidence during aggressive driving and tuning sessions.\n\u003ch3\u003eInstallation \u0026amp; Fitment\u003c\/h3\u003e\nThis piston set is engineered for direct replacement in Subaru WRX STi models equipped with the EJ257 engine from 2004 onward. Proper installation requires standard engine assembly procedures and compatible components. Professional installation is recommended to ensure optimal performance and longevity.\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\nThe package includes a complete set of pistons, rings, and wrist pins necessary for a full engine rebuild or upgrade. Hardware and additional components are not included.\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\nPerfect for engine builders, tuners, and Subaru enthusiasts aiming to increase horsepower, improve durability, and support high-performance modifications.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":51635935871263,"sku":"621005C-4","price":679.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0229\/3877\/files\/group-6fb279de-3abc-410e-9607-f540300bf0a1-800_9f0ff7be-011b-45f7-ae46-81b0296ade3e.jpg?v=1771149066","url":"https:\/\/shop.wheelflip.com\/products\/manley-04-subaru-wrx-sti-ej257-75mm-de-stroked-100mm-5mm-bore-8-5-1-dish-piston-set-w-rings","provider":"WheelFlip","version":"1.0","type":"link"}