What is the compression ratio with these pistons?

These pistons feature an -18cc dish volume. When paired with the appropriate crankshaft, connecting rods, and cylinder heads for a 440 cubic inch LSX engine, they result in a 10.3:1 compression ratio.

What materials are these pistons made from?

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

Are these pistons compatible with all LS engines?

These pistons are specifically designed for the GM LSX 440 cubic inch displacement. They feature a 4.185-inch bore and are intended for use with specific stroke crankshafts and connecting rod lengths. It's important to verify these dimensions against your engine's specifications.

Mahle LSX 440cid Piston Set 930229585

Name: Mahle MS Piston Set GM LSX 440cid 4.185x1.110RCH 4.0 Stk 6.125 Rod .927 Pin -18cc 10.3CR - Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-lsx-440cid-4-185x1-110rch-4-0-stk-6-125-rod-927-pin-t14-348895
Price: 939.81 USD
Availability: BackOrder

Mahle MS Piston Set GM LSX 440cid 4.185x1.110RCH 4.0 Stk 6.125 Rod .927 Pin -18cc 10.3CR - Set of 8

$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 MS Piston Set for GM LSX 440cid engines. Forged 2618 aluminum construction for high-performance builds.

Key Features

Fits GM LSX 440 cu in engines.
Forged from 2618 aluminum for high-strength applications.
Designed for a 4.185-inch bore and 4.000-inch stroke.
Compatible with 6.125-inch connecting rods and .927-inch wrist pins.
Features an -18cc dish volume for a 10.3:1 compression ratio.
Each piston weighs 453 grams.

This piston set is designed for Chevrolet LSX 440 cubic inch engines. Always confirm 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

When you're building a serious performance engine, especially a larger displacement GM LSX like a 440 cubic inch, the pistons are a critical component. This set from Mahle is designed for those high-stress applications where reliability and strength are paramount. They are forged from 2618 aluminum, a material known for its durability and ability to withstand the extreme pressures and temperatures found in performance engines.

This specific set features a 4.185-inch bore and is designed to work with a 4.000-inch stroke crankshaft and a 6.125-inch connecting rod, with a .927-inch wrist pin. The pistons have a -18cc dish volume, which, combined with other engine components, results in a 10.3:1 compression ratio. This compression ratio is a popular choice for naturally aspirated or forced induction builds, offering a good balance of power and drivability. Each piston weighs in at 453 grams, contributing to a well-balanced rotating assembly.

Mahle is a well-known name in engine components, and this piston set reflects their commitment to performance. They are a solid option for anyone looking to rebuild or upgrade their LSX engine for demanding use. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and assembly details.