What material are these Mahle pistons made from?

These Mahle MS pistons are forged from 2618 aluminum. This material is chosen for its high strength and durability, making it well-suited for demanding performance engine applications.

What is the compression ratio achieved with these pistons?

When used with a 6.125-inch rod and a 0.927-inch pin, these pistons contribute to a 13.3:1 compression ratio. This is achieved through their 9.2cc dish volume and the engine's other components.

Are these pistons compatible with all Chevrolet LS engines?

This specific set is designed for Chevrolet LSX engines with a 402 cubic inch displacement and a 4.000-inch bore. It is crucial to confirm that your engine's specifications match these requirements before purchasing.

Mahle LS Forged Piston Set 4.000in Bore 930229600

Name: Mahle MS Chevrolet LS 6.8L 402cid 4.000in Bore x 1.110RCH 4.000 Stroke 9.2cc 13.3CR - Pist Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-chevrolet-ls-6-8l-402cid-4-000in-bore-x-1-110rch-4-000-stroke-9-2-t14-714395
Price: 987.55 USD
Availability: BackOrder

Mahle MS Chevrolet LS 6.8L 402cid 4.000in Bore x 1.110RCH 4.000 Stroke 9.2cc 13.3CR - Pist Set of 8

$987.55

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 Chevrolet LS 402cid forged piston set. Features a 4.000in bore and 13.3 CR for improved performance.

Key Features

Fits Chevrolet LSX 402 cu in engines.
Forged from 2618 aluminum for strength and durability.
Features a 4.000-inch bore and 4.000-inch stroke.
Designed with a 9.2cc dish volume for a 13.3:1 compression ratio.
Includes 8 pistons, each weighing 454 grams.
Has a 1.110-inch RCH (Ring Compression Height).

This piston set is designed for Chevrolet LSX 402 cu in engines. Always verify compatibility with your specific engine configuration.

⚠️ 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's MS forged piston set is built for Chevrolet LS engines displacing 402 cubic inches, featuring a 4.000-inch bore and a 4.000-inch stroke. These pistons are crafted from 2618 aluminum, a material known for its strength and durability under high stress, making them a solid choice for performance builds where reliability is key. The 9.2cc dish volume contributes to a substantial 13.3:1 compression ratio when paired with a 6.125-inch rod and a 0.927-inch pin, which is ideal for naturally aspirated or forced induction applications seeking maximum power output.

Each piston weighs in at 454 grams, a carefully managed weight that balances strength with rotational mass. The 1.110-inch RCH (Ring Compression Height) ensures proper ring seal and function, critical for maintaining cylinder pressure and preventing blow-by. This set includes eight pistons, designed to meet the specific demands of performance LS engine builds that require robust internal components to handle increased cylinder pressures and temperatures.

When considering this piston set for your build, remember that it is not CARB approved and cannot be shipped to California. It's important to consult with your engine builder to ensure these specifications align with your overall engine program and intended use. Proper installation and balancing are crucial for optimal performance and longevity.