What is the compression ratio with these pistons?

These Mahle pistons feature an -18cc dish volume, which results in a 10.2:1 compression ratio when used with compatible cylinder heads and a 4.000-inch stroke crankshaft in an LSX 434 cubic inch engine.

Are these pistons suitable for a stock LSX engine?

These pistons are designed for performance LSX builds with specific bore and stroke dimensions. They are not intended as a direct replacement for stock pistons in all LSX applications and are best suited for custom engine builds aiming for a 434 cubic inch displacement.

What is the significance of the 2618 aluminum construction?

2618 aluminum is a strong alloy commonly used in high-performance pistons. It offers good strength and durability under high temperatures and pressures, making it well-suited for demanding engine applications.

Mahle LSX 434cid Piston Set 930229555

Name: Mahle MS Piston Set LSX 434cid 4.155in Bore 4.0in Stk 6.125in Rod .927 Pin -18cc 10.2 CR
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-lsx-434cid-4-155in-bore-4-0in-stk-6-125in-rod-927-pin--t14-205772
Price: 939.81 USD
Availability: BackOrder

Mahle MS Piston Set LSX 434cid 4.155in Bore 4.0in Stk 6.125in Rod .927 Pin -18cc 10.2 CR

$939.81

On Backorder

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

Mahle LSX 434cid forged piston set for 4.155in bore and 4.0in stroke engines. Part# 930229555. Not CARB approved.

Key Features

Fits Chevrolet LSX 434 cu in engines.
Designed for a 4.155-inch bore and 4.000-inch stroke.
Features a -18cc dish volume for a 10.2:1 compression ratio.
Utilizes a 6.125-inch connecting rod and a .927-inch pin.
Constructed from 2618 aluminum for strength.
Each piston weighs approximately 441 grams.

This piston set is designed for Chevrolet LSX 434 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 designed for LSX 434 cubic inch engines. These pistons are built for performance applications, featuring a 4.155-inch bore and a 4.0-inch stroke, paired with a 6.125-inch connecting rod and a .927-inch pin. The -18cc dish volume contributes to a 10.2:1 compression ratio, making them suitable for builders looking to optimize power output in their high-performance LSX build.

Crafted from 2618 aluminum, these pistons are well-built for the demands of a performance engine. The set includes all the necessary pistons for an 8-cylinder engine, each weighing approximately 441 grams. The specific dimensions, including the 4.155-inch bore and 4.000-inch stroke compatibility, ensure a precise fit within the engine block and crankshaft assembly. This set is a solid option for engine builders aiming for a specific compression ratio and performance profile in their LSX engine.

Please note that this piston set is not CARB approved and cannot be shipped to California. It is important to verify fitment and compatibility with your specific engine build before installation. Refer to the manufacturer's installation instructions for detailed guidance.