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  • Mahle MS Piston Set EJ25 99.75mm Bore 79.0mm Stroke Stock Rod 23mm Pin -22cc 8.5 CR Set of 4
Mahle MS Piston Set EJ25 99.75mm Bore 79.0mm Stroke Stock Rod 23mm Pin -22cc 8.5 CR Set of 4
Mahle MS Piston Set EJ25 99.75mm Bore 79.0mm Stroke Stock Rod 23mm Pin -22cc 8.5 CR Set of 4
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Load image into Gallery viewer, Mahle MS Piston Set EJ25 99.75mm Bore 79.0mm Stroke Stock Rod 23mm Pin -22cc 8.5 CR Set of 4
Load image into Gallery viewer, Mahle MS Piston Set EJ25 99.75mm Bore 79.0mm Stroke Stock Rod 23mm Pin -22cc 8.5 CR Set of 4

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Mahle MS Piston Set EJ25 99.75mm Bore 79.0mm Stroke Stock Rod 23mm Pin -22cc 8.5 CR Set of 4

2 sold in last 8 hours
MHL930285127
In stock
Piston Sets - Forged - 4cyl
$748.96
The Subaru WRX 2.5L STI, Forester, Legacy Piston Set (99.75mm x 30.7mm CH) is designed for...
$748.96
Description

The Subaru WRX 2.5L STI, Forester, Legacy Piston Set (99.75mm x 30.7mm CH) is designed for high-performance engines, ideal for forced induction and turbocharged builds. These pistons offer an 8.5:1 compression ratio and are made of durable 2618 aluminum, known for its strength and ability to handle extreme conditions. This set is optimized for performance with 79.0mm stroke and 130.5mm rod length, making it perfect for those seeking to upgrade their Subaru WRX, STI, Forester, or Legacy engine.

Key Features:

  • 99.75mm Bore & 79.0mm Stroke: The larger bore size and stroke provide greater displacement, resulting in more power for turbocharged applications.
  • 130.5mm Rod Length: Ensures proper engine geometry for smoother performance and increased reliability.
  • 8.5:1 Compression Ratio: Suitable for high-boost, turbocharged applications, providing the right balance for power and durability.
  • -19.3cc Dish: Helps optimize the combustion chamber for more efficient fuel and air mixture, boosting performance.
  • 2618 Aluminum Construction: A stronger, heat-resistant material that performs well in high-stress, high-temperature environments like those in modified or turbocharged engines.
  • 23mm Pin Size: Designed to fit Subaru engines securely, ensuring solid and reliable operation.
  • Weight: 413g per piston.

Specifications:

  • Bore Size: 99.75mm
  • Stroke: 79.0mm
  • Rod Length: 130.5mm
  • Pin Size: 23mm
  • Compression Ratio: 8.5:1
  • Piston Dish: -19.3cc
  • Material: 2618 Aluminum
  • Weight: 413g per piston
  • Set of: 4 Pistons
  • Application: Subaru WRX 2.5L STI, Forester, Legacy (Ideal for turbocharged or high-performance engine builds)

Applications:

This Subaru WRX 2.5L STI, Forester, Legacy Piston Set is designed for high-performance engine builds, particularly turbocharged or boosted applications. It’s perfect for enthusiasts looking to increase displacement and achieve higher power output in their WRX, STI, Forester, or Legacy vehicles. These pistons are ideal for both street performance and racing environments.

REVIEWS

MB

"Installed these pistons in my WRX STI, and the power gains were immediately noticeable. The build quality is top-notch, and they handle the turbo boost without any issues. Very happy with my purchase!"

Michael B.

San Diego, CA

LP

"These pistons are the perfect upgrade for my Forester. They offer the perfect compression ratio for my turbo setup, and the 2618 aluminum ensures durability under heavy boost. Highly recommend!"

Lucas P.

Portland, OR

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