What material are these Mahle pistons made from and why is it important?

These pistons are made from 4032 aluminum. This material is chosen for its strength and good thermal expansion properties, which helps maintain proper clearances as the engine heats up and resists detonation under high performance conditions.

What compression ratio do these pistons achieve?

With a -12cc dish volume, these pistons achieve a 10.1:1 compression ratio when used with appropriate cylinder heads and gaskets for your Hemi engine build.

Are these pistons compatible with all Hemi engines?

These pistons are specifically designed for Hemi engines with a 424 cubic inch displacement, a 4.080-inch bore, and a 4.050-inch stroke. It is important to confirm these specifications match your engine's requirements.

Mahle Hemi Piston Set 4.08in Bore 10.1 CR 930277580

Name: Mahle MS Piston Set Hemi 424ci 4.08in Bore 4.05in Stk 6.125in Rod .927 Pin -12cc 10.1 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-hemi-424ci-4-08in-bore-4-05in-stk-6-125in-rod-927-pin--t14-29254
Price: 972.44 USD
Availability: BackOrder

Mahle MS Piston Set Hemi 424ci 4.08in Bore 4.05in Stk 6.125in Rod .927 Pin -12cc 10.1 CR Set of 8

$972.44

On Backorder

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

Mahle Hemi piston set for 424 cu in engines. 4.08in bore, 10.1 CR, .927in pin. Set of 8.

Key Features

Fits Chrysler Hemi 424 cu in engines.
Set includes eight Mahle MS pistons.
Features a 4.080-inch bore and 4.050-inch stroke.
Designed for a 6.125-inch connecting rod and a .927-inch pin.
Constructed from 4032 aluminum for strength and thermal properties.
Includes a -12cc dish volume for a 10.1:1 compression ratio.

This piston set is designed for Chrysler Hemi 424 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 Mahle MS Piston Set is built for Hemi engines displacing 424 cubic inches, featuring a 4.080-inch bore and a 4.050-inch stroke. You get a complete set of eight pistons, each weighing 427 grams, designed to work with a 6.125-inch connecting rod and a .927-inch pin. These pistons are crafted from 4032 aluminum, which is known for its strength and ability to handle high temperatures and pressures, making it a solid choice for performance builds. The dish volume is -12cc, resulting in a 10.1:1 compression ratio when paired with the correct cylinder head and gasket combination, offering an improved power output over stock configurations.

Mahle has engineered these pistons with specific dimensions to ensure a proper fit and function within the Hemi engine block. The 4.080-inch bore is a common size for stroker Hemi builds, and the 6.125-inch rod length, combined with the piston's compression height, helps achieve the desired stroke and displacement. The .927-inch pin diameter is standard for many performance applications, and the pistons are designed to accommodate this size securely. The 4032 aluminum material offers good thermal expansion properties, which helps prevent piston slap when cold and maintains a tight tolerance when the engine reaches operating temperature. This material also provides good resistance to detonation and fatigue under demanding conditions.

When rebuilding or modifying your Hemi engine, choosing well-built internal components is crucial for reliability and performance. This Mahle piston set is a significant part of that equation, providing a strong foundation for your engine's power. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to your engine builder's specifications and the manufacturer's installation instructions for proper assembly and break-in procedures to ensure optimal performance and longevity.