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  • Mahle MS Piston Set EJ25 99.50mm Bore 79.0mm Stroke 130.4mm Rod 23mm Pin -22cc 8.5 CR Set of 4
Mahle MS Piston Set EJ25 99.50mm Bore 79.0mm Stroke 130.4mm Rod 23mm Pin -22cc 8.5 CR Set of 4
Mahle MS Piston Set EJ25 99.50mm Bore 79.0mm Stroke 130.4mm Rod 23mm Pin -22cc 8.5 CR Set of 4
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Load image into Gallery viewer, Mahle MS Piston Set EJ25 99.50mm Bore 79.0mm Stroke 130.4mm Rod 23mm Pin -22cc 8.5 CR Set of 4
Load image into Gallery viewer, Mahle MS Piston Set EJ25 99.50mm Bore 79.0mm Stroke 130.4mm Rod 23mm Pin -22cc 8.5 CR Set of 4

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Mahle MS Piston Set EJ25 99.50mm Bore 79.0mm Stroke 130.4mm Rod 23mm Pin -22cc 8.5 CR Set of 4

2 sold in last 8 hours
MHL930285017
In stock
Piston Sets - Forged - 4cyl
$636.87
The Subaru WRX 2.5L STI, Forester, Legacy Piston Set is engineered for high-performance builds, featuring a...
$636.87
Description

The Subaru WRX 2.5L STI, Forester, Legacy Piston Set is engineered for high-performance builds, featuring a balanced stroke and optimal compression ratio. This set is designed to support a 79.0mm stroke with a 92.50mm bore and 130.5mm rod length, offering an 8.5:1 compression ratio ideal for turbocharged applications. Made from durable 4032 aluminum, these pistons are lightweight yet strong, designed to handle the stresses of high-performance Subaru engines.

Key Features:

  • 92.50mm Bore & 79.0mm Stroke: These dimensions provide a displacement boost to enhance engine power output, especially for performance or turbocharged setups.
  • 130.5mm Rod Length: Ensures the optimal balance of power, RPM stability, and durability during operation.
  • 8.5:1 Compression Ratio: Perfect for forced induction applications, offering the ideal balance between power and engine reliability.
  • -19.3cc Dish: Optimized for better combustion control, this piston dish helps in achieving more efficient power output in turbocharged setups.
  • 4032 Aluminum Construction: Known for its strength, durability, and resistance to high-stress conditions such as forced induction.
  • 23mm Pin: Designed to fit securely within the Subaru engine's pin bore for reliable performance.

Specifications:

  • Bore Size: 99.50mm
  • Stroke: 79.0mm
  • Rod Length: 130.5mm
  • Pin Size: 23mm
  • Compression Ratio: 8.5:1
  • Piston Dish: -19.3cc
  • Material: 4032 Aluminum
  • Weight: 398g per piston
  • Set of: 4 Pistons
  • Application: Subaru WRX 2.5L STI, Forester, Legacy Engines (Ideal for high-performance, turbocharged builds)

Applications:

This WRX 2.5L STI, Forester, and Legacy Piston Set is perfect for building a high-output, turbocharged Subaru engine. Whether you’re working on a WRX, STI, Forester, or Legacy, this set provides the displacement and compression ratio needed to unlock significant power gains. Designed for both street and track use, this set is ideal for those looking to upgrade their engine for performance.


REVIEWS

DC

"These pistons gave my WRX a significant boost in power. The 8.5:1 compression ratio works well with my turbo setup, and I noticed an immediate difference on the dyno. Highly recommended!"

David C.

Los Angeles, CA

MW

"Built my STI engine with these pistons, and they’ve performed flawlessly under boost. Very happy with the results, especially the smooth power delivery. Great investment!"

Matt W.

Chicago, IL

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