| Year | Make | Model |
|---|---|---|
| 1994 - 2002 | Audi | A8 Quattro |
| 2000 - 2011 | Subaru | Impreza |
| 1989 - 1993 | Subaru | Legacy |
| 2003 - 2009 | Subaru | Outback |
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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)
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)
SKU:621005C-4
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Regular price
$679.55 USD
Regular price
$760.03 USD
Sale price
$679.55 USD
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The Manley Platinum Series pistons are high-performance forged components designed specifically for the Subaru WRX STI with the EJ257 engine. Crafted from 2618 alloy, these pistons feature proven cam and barrel skirt profiles to ensure optimal strength and reliability under demanding conditions. Equipped with tool steel wrist pins and moly skirt coatings on select part numbers, they provide enhanced durability and reduced friction. These pistons are engineered to support increased performance, making them ideal for high-horsepower builds and tuned applications. Their precise design and high-quality materials deliver consistent power output and longevity, even under aggressive driving or racing conditions.
Designed for Subaru WRX STI models from 2004 and newer, these pistons are suitable for engines with a 75mm bore and a +0.5mm oversize. They serve as a direct upgrade for stock pistons in performance or modified engines, offering improved strength and efficiency. Installation involves standard piston replacement procedures, and the set includes the pistons and rings necessary for a complete rebuild. These pistons are perfect for professional engine builders, tuners, and enthusiasts seeking reliable, high-performance components for street or track use.
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Overview
Overview
Manley Performance Pistons
Fits Subaru WRX STi 2004+ with EJ257 Engine
Part #: 621005C-4
Overview
The 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. The 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.Key Features
Built 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.Construction & Design
These 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.Performance & Response
Designed 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.Installation & Fitment
This 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.What’s Included
The 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.Ideal For
Perfect for engine builders, tuners, and Subaru enthusiasts aiming to increase horsepower, improve durability, and support high-performance modifications.
