{"product_id":"manley-04-subaru-wrx-sti-ej257-83mm-stroker-99-5mm-std-bore-9-8-1-dish-piston-set-with-rings","title":"Manley 83mm Stroker Piston Set with Rings | Subaru WRX STi (04+) (622100C-4)","description":"\u003ch1\u003eManley Performance Pistons\u003c\/h1\u003e\n\u003ch2\u003eFitment Summary\u003c\/h2\u003e\n\u003c!-- No specific fitment details provided, so this section is omitted --\u003e\n\u003cp\u003e\u003cstrong\u003ePart #:\u003c\/strong\u003e 622100C-4\u003c\/p\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\nThe Manley 04+ Subaru WRX STi (EJ257) 83mm Stroker 99.5mm STD Bore 9.8:1 Dish Piston Set is a high-performance upgrade designed for serious engine builders and tuners seeking durability and enhanced power. Crafted from premium 2618 alloy forgings, these pistons are engineered to withstand the rigors of high-stress applications while supporting increased displacement and power output. Ideal for those looking to build a reliable, high-performance engine, this set offers a perfect balance of strength, weight reduction, and thermal stability, making it suitable for both daily driving and competitive racing.\n\nWhether you're rebuilding your engine or customizing your Subaru WRX STi for optimal performance, these pistons provide the foundation for a robust and responsive powertrain. The dish design helps maintain compression ratios suitable for forced induction setups, while the moly skirt coatings reduce friction and wear, extending engine life. The inclusion of proven cam and barrel skirt profiles ensures compatibility and reliable operation under demanding conditions.\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\nThis piston set features advanced materials and thoughtful design to maximize engine performance and longevity:\n\u003cul\u003e\n\u003cli\u003eManufactured from high-quality 2618 alloy forgings for superior strength and durability\u003c\/li\u003e\n\u003cli\u003eDesigned with proven cam and barrel skirt profiles for optimal fit and function\u003c\/li\u003e\n\u003cli\u003eIncludes tool steel wrist pins for enhanced reliability and wear resistance\u003c\/li\u003e\n\u003cli\u003eMoly-coated skirts to reduce friction and improve thermal management\u003c\/li\u003e\n\u003cli\u003eDish piston design to support suitable compression ratios for turbocharged applications\u003c\/li\u003e\n\u003cli\u003ePrecisely engineered to fit the EJ257 engine in Subaru WRX STi models from 2004 and newer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConstruction \u0026amp; Design\u003c\/h3\u003e\nThe pistons are crafted from high-grade 2618 alloy forgings, known for their excellent strength-to-weight ratio and thermal stability. The moly skirt coatings provide a low-friction surface, reducing wear and improving efficiency during high-performance operation. The design incorporates a dish shape that helps maintain the desired compression ratio, essential for turbocharged engines, while the tool steel wrist pins ensure secure attachment and longevity.\n\n\u003ch3\u003ePerformance \u0026amp; Response\u003c\/h3\u003e\nThese pistons are engineered to support increased engine displacement and boost levels, helping your Subaru WRX STi achieve improved throttle response and power delivery. The lightweight forged construction reduces reciprocating mass, contributing to quicker engine response and smoother operation under high RPM conditions. Designed for durability, they help maintain consistent performance during aggressive driving or racing scenarios.\n\n\u003ch3\u003eInstallation \u0026amp; Fitment\u003c\/h3\u003e\nThis piston set is intended for use with the EJ257 engine found in 2004 and newer Subaru WRX STi models. Proper installation requires standard engine rebuilding procedures, including bore sizing and proper piston ring installation. It is recommended to consult with a professional engine builder for optimal results.\n\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\nThe package includes a complete set of four pistons, tool steel wrist pins, and piston rings designed specifically for the 83mm stroke and 99.5mm bore configuration.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":51635937673503,"sku":"622100C-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_13f216fd-1386-4de0-b0a1-7b2dfe06442b.jpg?v=1771149074","url":"https:\/\/shop.wheelflip.com\/products\/manley-04-subaru-wrx-sti-ej257-83mm-stroker-99-5mm-std-bore-9-8-1-dish-piston-set-with-rings","provider":"WheelFlip","version":"1.0","type":"link"}