| Year | Make | Model |
|---|---|---|
| 2012 - 2016 | Scion | FR-S |
| 1992 - 2007 | Subaru | Impreza |
| 1989 - 2003 | Subaru | Legacy |
| 1998 - 2003 | Subaru | Legacy Outback BH |
| 1993 - 1998 | Subaru | Legacy Touring Wagon BG |
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Wiseco Professional Series Forged Racing Pistons | Subaru WRX EJ20 (Stock) (6579M93)
Wiseco Professional Series Forged Racing Pistons | Subaru WRX EJ20 (Stock) (6579M93)
SKU:6579M93
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$183.32 USD
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$202.99 USD
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$183.32 USD
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â–¶ Vehicle Fitments
The Wiseco Subaru WRX EJ20 STRKR 1.181CH9300XX piston is a high-performance forged racing piston designed for serious motorsport applications. Built with premium materials and engineered for durability, these pistons deliver exceptional strength and reliability under demanding conditions. The Professional Series pistons incorporate custom-level performance features, including precise machining and high-quality rings, to optimize engine power and efficiency. They are ideal for heavy-duty race builds and severe duty applications, providing the necessary resilience to withstand high stress and extreme temperatures.
Designed specifically for Subaru WRX models equipped with the EJ20 engine, these pistons are suitable for use in engines from 2002 to 2007. They serve as a direct replacement or upgrade for stock pistons in high-performance or racing setups. Installation involves standard piston replacement procedures, and the kit includes the pistons and premium rings. These pistons are intended for track, race, or high-performance street use, offering enhanced power output and engine durability for demanding driving conditions.
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Overview
Overview
Wiseco Professional Series
Fitment Summary
This product is designed specifically for Subaru WRX models equipped with the EJ20 engine. It is suitable for high-performance racing and severe duty applications, making it ideal for serious enthusiasts and professional builders seeking maximum durability and performance in their engine rebuilds.
Part #: 6579M93
Overview
The Wiseco Subaru WRX EJ20 STRKR 1.181CH9300XX Piston Shelf Stock is a set of forged racing pistons engineered for high-stress performance applications. Crafted from premium materials, these pistons are designed to withstand the rigors of competitive racing and heavy-duty use, providing exceptional strength, durability, and consistent performance. They are an excellent choice for enthusiasts looking to push their Subaru WRX to the next level with a reliable, high-quality upgrade that supports aggressive tuning and increased power output.
These pistons are ideal for serious racers and custom engine builders who demand the best in forged construction, precision machining, and performance support. They help optimize combustion efficiency, improve response, and sustain high RPM operation, all while maintaining structural integrity under extreme conditions.
Key Features
Designed for demanding racing environments, these Wiseco pistons feature:
- Forged aluminum construction for maximum strength and durability
- Precision-machined crown and skirt for optimal fit and performance
- High-quality piston rings included for reliable sealing
- Designed specifically for Subaru EJ20 engines in WRX models
- Enhanced heat resistance and wear properties for severe duty use
- Optimized for high RPM and aggressive tuning applications
- Lightweight design to support improved response and efficiency
Construction & Design
The pistons are forged from premium aluminum alloy, ensuring exceptional strength-to-weight ratio. The precise machining and finishing provide a perfect fit within the engine, supporting optimal combustion and minimizing wear. The crown features a carefully engineered shape to promote efficient airflow and combustion, while the skirt design enhances stability and reduces piston slap during operation.
Performance & Response
Built for racing and high-performance use, these pistons help your engine respond more quickly to throttle inputs and sustain high RPM operation with confidence. Their robust construction supports increased boost levels and aggressive tuning, making them suitable for serious performance upgrades.
Installation & Fitment
Designed as a direct replacement for OEM pistons in Subaru WRX models with EJ20 engines, installation requires standard engine rebuild procedures. Proper clearance and assembly are essential for optimal performance and longevity.
What’s Included
The package includes a set of forged pistons, along with premium rings designed to provide a reliable seal and long-lasting performance.
