What is the primary advantage of forged pistons over cast pistons?

Forged pistons are made by heating and hammering aluminum into shape, creating a stronger grain structure. This makes them much more durable and resistant to failure under high stress, high compression, and high horsepower conditions compared to cast pistons.

What compression ratio do these pistons help achieve?

These pistons have a -5.6cc dish volume. When used with appropriate cylinder heads and a 4.300-inch stroke, they contribute to achieving a 12.4:1 compression ratio.

Are these pistons legal for use in California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle Ford Big Block Piston Set 930261840

Name: Mahle MS Piston Set Ford 533ci 4.44in Bore 4.3in Stroke 6.8in Rod 0.990 Pin -5.6cc 12.4CR - Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-ford-533ci-4-44in-bore-4-3in-stroke-6-8in-rod-0-990-pi-t14-715835
Price: 879.27 USD
Availability: BackOrder

Mahle MS Piston Set Ford 533ci 4.44in Bore 4.3in Stroke 6.8in Rod 0.990 Pin -5.6cc 12.4CR - Set of 8

$879.27

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 Ford Big Block 533ci engines. Forged construction for high-performance builds.

Key Features

Fits Ford Big Block 533 cu in engines.
Forged aluminum construction for superior strength and durability.
4.440 inch bore size.
Designed for a 4.300 inch stroke and 6.800 inch connecting rod.
Features a 0.990 inch pin diameter.
-5.6cc dish volume for a 12.4:1 compression ratio.

This piston set is designed for Ford Big Block 533 cu in engines. Please verify compatibility with your specific engine build.

⚠️ 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 is a Mahle MS Piston Set specifically for Ford Big Block engines displacing 533 cubic inches. Mahle is a well-known name in engine components, and this set is built for serious performance applications where strength and reliability are paramount. These pistons are forged, which means they start as a solid block of aluminum that's heated and hammered into shape under immense pressure. This process creates a much stronger and more durable grain structure compared to cast pistons, making them ideal for high-compression, high-horsepower builds that see a lot of stress.

Each piston in this set features a 4.440-inch bore and is designed to work with a 4.300-inch stroke and a 6.800-inch connecting rod. The pin diameter is 0.990 inches. The dish volume is -5.6cc, which, combined with other engine components, results in a 12.4:1 compression ratio. At 574 grams each, these pistons offer a good balance of strength and weight for their intended application. The 2618 aluminum alloy used is known for its excellent strength and resistance to fatigue under extreme conditions.

This set includes eight pistons, enough for a complete V8 engine. It's important to note that these pistons are not CARB approved and cannot be shipped to California. They are also subject to Prop 65 warnings. For a high-performance Ford Big Block build, these Mahle pistons offer a solid foundation for power and durability.