What is the compression ratio with these pistons?

These Mahle MS pistons feature a -12cc dish volume which results in a compression ratio of 8.0:1. This is lower than many stock configurations, offering more flexibility for boosted applications.

What material are these pistons made from?

The pistons are constructed from 4032 aluminum alloy. This material is known for its good thermal expansion properties, making it suitable for performance engine builds.

Are these pistons compatible with all Subaru EJ20 engines?

These pistons are specifically listed for Subaru EJ20 2.0L engines. It is always recommended to confirm your exact engine code and specifications to ensure proper fitment before installation.

Mahle MS Piston Set 930020362 - Subaru EJ20/207

Name: Mahle MS Piston Set Subaru EJ20/207 93.00mm Bore 75.0mm Stroke 130.4mm Rod -12cc 8.0 CR Set of 4
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-subaru-ej20-207-93-00mm-bore-75-0mm-stroke-130-4mm-rod-t14-184465
Price: 637.08 USD
Availability: InStock

Mahle MS Piston Set Subaru EJ20/207 93.00mm Bore 75.0mm Stroke 130.4mm Rod -12cc 8.0 CR Set of 4

$637.08

Only 1 left in stock

Mahle MS Piston Set for Subaru EJ20/207. 93.00mm bore, 8.0 CR. Set of 4. Not CARB approved.

Key Features

This product is a set of four Mahle MS forged pistons.
Each piston has a 93.00mm bore diameter.
The pistons feature a -12cc dish volume, resulting in an 8.0:1 compression ratio.
Constructed from 4032 aluminum alloy for good thermal expansion.
Each piston weighs approximately 359 grams.
Designed with a 75.0mm stroke, 130.4mm rod length, and a 23mm pin size.

These pistons are designed for Subaru EJ20 2.0L engines. Please verify compatibility with your specific engine code before purchase.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This set includes four Mahle MS forged pistons, designed for Subaru EJ20 and EJ207 engines. Each piston measures 93.00mm in bore diameter and features a 75.0mm stroke, 130.4mm rod length, and a 23mm pin. With a -12cc dish volume, these pistons achieve a compression ratio of 8.0:1, making them a solid choice for builds looking to manage boost or specific fuel requirements. The 4032 aluminum alloy construction offers good thermal expansion properties for reliable performance.

Mahle is a well-known name in engine components, and these MS pistons are built to handle the demands of performance applications. The forged construction provides increased strength and durability compared to cast pistons, which is essential when increasing boost pressure or modifying engine timing. Each piston weighs approximately 359 grams, contributing to a balanced rotating assembly. The 8.0:1 compression ratio is notably lower than stock, giving you more room for boost without excessive cylinder pressures.

When rebuilding your EJ20 or EJ207 engine, using well-made pistons like these Mahle MS units is crucial for longevity and performance. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.