| Year | Make | Model |
|---|---|---|
| 1994 - 2002 | Audi | A8 Quattro |
| 2002 - 2008 | Subaru | Forester |
| 1992 - 2011 | Subaru | Impreza |
| 1989 - 2009 | Subaru | Legacy |
| 1993 - 1998 | Subaru | Legacy Touring Wagon BG |
| 2003 - 2009 | Subaru | Outback |
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Manley 83mm Stroker Piston Set | Subaru WRX STi (04+) (622002C-4)
Manley 83mm Stroker Piston Set | Subaru WRX STi (04+) (622002C-4)
SKU:622002C-4
In stock
Regular price
$679.55 USD
Regular price
$760.03 USD
Sale price
$679.55 USD
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▶ Vehicle Fitments
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 deliver superior durability and reduced friction. These pistons are engineered to support increased performance, making them ideal for high-horsepower builds and aggressive tuning applications. Their precise construction and premium materials help maximize engine efficiency and longevity, providing a reliable foundation for both street and track use.
Designed for 2011–2025 Subaru WRX STI models equipped with the EJ257 engine, these pistons serve as a direct upgrade for stock components in high-performance builds. They are suitable for applications requiring increased displacement and compression, such as stroker or high-boost setups. The set includes pistons and rings, ready for installation in engine rebuilds or upgrades. These forged pistons are intended for professional engine builders and serious tuners seeking enhanced strength and performance. They are ideal for street, track, or drag racing scenarios where durability and power are paramount. Proper installation and tuning are recommended to maximize their benefits.
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Overview
Overview
Manley Performance Manley 04+ Subaru WRX STi (EJ257) 83mm Stroker 99.75mm +0.25mm Bore 8.5:1 Dish Piston Set with Rings
Fitment Summary
This piston set is designed specifically for the Subaru WRX STi models equipped with the EJ257 engine, particularly those built from 2004 onward with 83mm stroke configurations.
Part #: 622002C-4
Overview
The Manley Platinum Series piston set offers a high-performance upgrade for enthusiasts and professional tuners seeking durability and precision in their engine builds. Crafted from premium 2618 alloy forgings, these pistons are engineered to withstand the rigors of high-performance applications while maintaining excellent thermal stability. The set is ideal for those looking to increase engine displacement with a stroker kit, providing a reliable foundation for power gains and enhanced engine response. Designed for serious engine builders, these pistons help optimize combustion efficiency and support high-revving operation, making them suitable for both daily driving and competitive motorsport use.
Key Features
- Manufactured from high-strength 2618 alloy forgings for superior durability
- Precisely machined to fit the EJ257 83mm stroke engine with a 99.75mm bore
- Includes moly skirt coatings on select models for reduced friction and wear
- Tool steel wrist pins for enhanced strength and reliability
- Designed with a 8.5:1 compression ratio for optimal performance and efficiency
- Features a dish piston design to support specific compression and clearance needs
- Engineered for high-performance applications, supporting increased power output
Construction & Design
The pistons are crafted from premium 2618 aluminum alloy, known for its excellent strength-to-weight ratio and thermal conductivity. The moly skirt coatings provide reduced friction and wear, extending piston life under demanding conditions. The precise machining ensures a perfect fit for the EJ257 engine, supporting reliable operation and consistent performance.
Driving Feel & Feedback
These pistons help support a more responsive and robust engine feel, especially when combined with other performance modifications. They contribute to smoother power delivery and improved throttle response, making your Subaru WRX STi more engaging to drive.
Installation & Fitment
Designed as a direct replacement for the stock pistons, installation requires standard engine assembly procedures. Proper clearance and assembly are essential to ensure optimal performance and longevity.
What’s Included
The package includes a complete set of pistons and rings, ready for installation in compatible EJ257 engines.
