What material are these pistons made from?

These pistons are forged from 2618 aluminum. This material is chosen for its strength and ability to withstand the high stresses found in performance racing engines.

What is the compression ratio and what fuel is recommended?

The pistons are designed to achieve a 15.7:1 compression ratio. This high compression ratio typically requires the use of high-octane racing fuels to prevent detonation.

Are these pistons compatible with all Chevy Big Block heads?

These pistons are specifically designed for use with cylinder heads that have either a 24-degree or 25-degree valve angle. It's important to verify your cylinder head specifications before purchasing.

Mahle Elite Sportsman Piston Set 4.25in Bore 15.7 CR 9302394

Name: Mahle MS Pistons Chevy BB 588ci 4.25in Bore 4.250in Stroke 6.38in Rod 0.990 Pin 15.7CR - Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-pistons-chevy-bb-588ci-4-25in-bore-4-250in-stroke-6-38in-rod-0-99-t14-940870
Price: 1128.81 USD
Availability: BackOrder

Mahle MS Pistons Chevy BB 588ci 4.25in Bore 4.250in Stroke 6.38in Rod 0.990 Pin 15.7CR - Set of 8

$1128.81

On Backorder

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

Mahle Elite Sportsman forged piston set for Chevy Big Block 588ci. 4.25in bore, 15.7 CR. Set of 8.

Key Features

Fits Chevy Big Block 588 cu in engines.
Forged from 2618 aluminum for strength and durability.
Designed for a 4.250 inch bore and 4.250 inch stroke.
Achieves a 15.7:1 compression ratio with a 47.1cc chamber volume.
Includes 0.990 inch wrist pins.
Compatible with cylinder heads featuring a 24-degree or 25-degree valve angle.

This piston set is designed for Chevy Big Block 588 cubic inch engines. It is not CARB approved and cannot be shipped to California.

⚠️ 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

Mahle is a well-known name in engine components, and their Elite Sportsman Drag Series pistons are built for serious performance builds. If you're working on a Chevy Big Block engine, especially one aiming for significant displacement like the 588 cubic inch application this set is designed for, these pistons are a solid choice for a rebuild.

This set is engineered for a 4.250 inch bore and features a 4.250 inch stroke with a 6.385 inch rod length, creating a 588 cubic inch displacement. The pistons are forged from 2618 aluminum, a strong material commonly used in high-performance applications for its durability under extreme stress. They come with a 0.990 inch pin and are designed to achieve a 15.7:1 compression ratio with a 47.1cc combustion chamber volume, which is suitable for high-octane racing fuels. Each piston weighs approximately 665 grams. These pistons are specifically designed for cylinder heads with either a 24-degree or 25-degree valve angle, offering some flexibility depending on your cylinder head choice.

Keep in mind that this piston set is not CARB approved and cannot be shipped to California. It's also important to note that this product is subject to California's Proposition 65 warning. For optimal performance and longevity, ensure these are installed by a qualified professional who can adhere to all necessary engine building procedures and specifications.