| 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 Subaru WRX STi (EJ257) 99.5mm Bore STD Size 8.5 CR 83mm Stroke Piston | Subaru WRX STi (99.5mm Bore, 83mm Stroke) (622000C-1)
Manley Subaru WRX STi (EJ257) 99.5mm Bore STD Size 8.5 CR 83mm Stroke Piston | Subaru WRX STi (99.5mm Bore, 83mm Stroke) (622000C-1)
SKU:622000C-1
In stock
Regular price
$169.89 USD
Regular price
$190.01 USD
Sale price
$169.89 USD
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▶ Vehicle Fitments
The Manley Platinum Series pistons for Subaru WRX STi with the EJ257 engine are high-performance forged components designed to enhance engine durability and power output. Crafted from 2618 alloy forging, these pistons feature proven cam and barrel skirt profiles for optimal strength and reliability under demanding conditions. Equipped with tool steel wrist pins and moly skirt coatings on select part numbers, they provide excellent wear resistance and thermal stability. These pistons are engineered for professional engine builders and tuners seeking superior performance, making them ideal for high-performance applications and engine modifications.
Designed specifically for the Subaru WRX STi from 1999.5 and later, these pistons have a 99.5mm bore, a stock stroke of 83mm, and a compression ratio of 8.5:1. They serve as a direct replacement or upgrade for stock pistons in engines built for increased power and durability. Installation involves standard piston replacement procedures, suitable for street, track, or tuning projects. The kit includes single pistons with rings, ensuring compatibility with the EJ257 engine configuration. These pistons are perfect for enthusiasts aiming to maximize engine performance and longevity.
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Overview
Overview
Manley Performance Pistons
Fitment Summary
This product is designed specifically for Subaru WRX STi models equipped with the EJ257 engine. It features a 99.5mm bore, standard size, with an 8.5 compression ratio and an 83mm stroke, making it ideal for high-performance engine builds and tuning applications.
Part #: 622000C-1
Overview
The Manley Platinum Series pistons are engineered for serious performance enthusiasts and professional engine builders seeking durability and reliability. Crafted from high-quality 2618 alloy forgings, these pistons are designed to withstand the rigors of high horsepower and aggressive tuning. Their proven cam and barrel skirt profiles ensure optimal stability and minimal piston slap, while the moly skirt coatings on select models reduce friction and wear. Equipped with tool steel wrist pins, these pistons provide a secure fit and long-lasting performance, making them a perfect choice for turbocharged Subaru engines.
Key Features
- Manufactured from high-strength 2618 alloy forgings for superior durability
- Designed with proven cam and barrel skirt profiles for stability under high loads
- Includes moly skirt coatings to reduce friction and enhance wear resistance
- Features tool steel wrist pins for secure and reliable operation
- Precisely engineered for Subaru WRX STi EJ257 engines with 99.5mm bore
- Optimized for high-performance tuning and engine rebuilds
Construction & Design
The pistons are crafted from premium 2618 alloy forgings, known for their excellent strength-to-weight ratio and thermal stability. The moly skirt coatings provide an additional layer of protection against wear, ensuring longevity in demanding applications. The design incorporates proven skirt profiles that promote smooth operation and reduce piston slap, contributing to quieter engine performance and increased reliability.
Performance & Response
These pistons are intended to support high-performance builds, helping your engine respond more effectively under boost and high RPM conditions. Their robust construction ensures consistent operation, while the precise fitment enhances overall engine responsiveness and durability during aggressive driving or tuning scenarios.
Installation & Fitment
Designed as a direct replacement for OEM pistons in Subaru WRX STi EJ257 engines, these pistons are intended for professional installation or experienced enthusiasts familiar with engine rebuilds. Proper machining and assembly are recommended to ensure optimal performance and longevity.
What’s Included
This listing includes a single piston with moly skirt coating and tool steel wrist pin. Additional components such as rings and pins are sold separately.
