What is the compression ratio achieved with these pistons?

These Mahle pistons feature a -12cc dish volume. When used with the appropriate cylinder head and gasket combination for the EJ20 engine, they are designed to achieve an 8.0 compression ratio.

What material are these pistons made from?

The pistons in this set are constructed from 2618 aluminum alloy. This is a well-known material for performance pistons due to its strength and durability under high temperatures and pressures.

Are these pistons suitable for a stock rebuild or a performance build?

These Mahle pistons are a solid option for both stock rebuilds and performance-oriented engine builds for the Subaru EJ20. Their construction and specifications are designed to handle increased demands while also being suitable for a reliable stock replacement.

Mahle EJ20 Piston Set 92.50mm Bore 929927942

Name: Mahle MS Piston Set EJ20 92.50mm Bore 75.0mm Stroke 130mm Rod 23mm Pin -12cc 8.0 CR Set of 4
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-ej20-92-50mm-bore-75-0mm-stroke-130mm-rod-23mm-pin-12c-t14-191504
Price: 749.22 USD
Availability: BackOrder

Mahle MS Piston Set EJ20 92.50mm Bore 75.0mm Stroke 130mm Rod 23mm Pin -12cc 8.0 CR Set of 4

$749.22

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle MS Piston Set for Subaru EJ20 2.0L engines. 92.50mm bore, -12cc dish, 8.0 CR. Part# 929927942. Not CARB approved.

Key Features

Fits Subaru EJ20 2.0L engines.
92.50mm bore size.
Features a -12cc dish volume for an 8.0 compression ratio.
Constructed from 2618 aluminum alloy for durability.
Includes 23mm wrist pins and is designed for a 130mm rod length.
Each piston weighs 362g, aiding in engine balance.

This piston set is designed for Subaru EJ20 2.0L engines. Please verify fitment with your specific vehicle's engine code.

⚠️ 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

If you're rebuilding the engine in your Subaru EJ20, this Mahle MS Piston Set is a solid choice for getting the job done right. These pistons are specifically made for the EJ20 2.0L engine, with a 92.50mm bore size. Mahle is a well-known name in engine components, and this set is built to handle the demands of a performance rebuild or a robust stock replacement.

This set features pistons with a -12cc dish volume, which helps achieve an 8.0 compression ratio when paired with the correct components. The stroke is 75.0mm, the rod length is 130mm, and the wrist pin diameter is 23mm. Each piston weighs in at 362g, which is a notable detail for engine balance. The 2618 aluminum alloy construction means these pistons are well-built for durability and performance under pressure. They are designed to fit right into your EJ20 block, making the rebuild process smoother.

When you're putting an engine back together, especially one like the EJ20, using reliable internal components is key. This Mahle piston set is a popular option for builders looking for a dependable part that meets specific performance targets. Remember that these are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for detailed installation procedures and torque specifications.