What is the compression ratio with these pistons?

These pistons feature a -5.8cc dish, which contributes to a 10.5:1 compression ratio. This ratio is achieved when used with appropriate cylinder heads and head gaskets for your engine build.

What material are these pistons made from?

The pistons are constructed from 2618 aluminum. This is a strong and lightweight alloy commonly used in high-performance applications for its ability to withstand high temperatures and pressures.

Can these pistons be shipped to California?

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

Mahle LSX Piston Set 4.155" Bore 10.5:1 CR 930226955

Name: Mahle MS Piston Set GM LSX 393cid 4.155x1.304CH 3.622 Stk 6.125 Rod .927 Pin -5.8cc 10.5CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-lsx-393cid-4-155x1-304ch-3-622-stk-6-125-rod-927-pi-t14-348859
Price: 834.05 USD
Availability: BackOrder

Mahle MS Piston Set GM LSX 393cid 4.155x1.304CH 3.622 Stk 6.125 Rod .927 Pin -5.8cc 10.5CR Set of 8

$834.05

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 393cid. Features a 4.155" bore and 10.5:1 compression ratio for improved performance.

Key Features

Fits GM LSX 393 cu in. engines.
Piston set includes 8 pistons.
Features a 4.155 inch bore size.
Designed for a 3.622 inch stroke and 6.125 inch connecting rod.
Utilizes a 0.927 inch wrist pin.
Includes a -5.8cc dish for a 10.5:1 compression ratio.

This piston set is designed for Chevrolet LSX 393 cu in. engines. Please 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 is well-known for its high-performance engine components, and this MS Piston Set for GM LSX engines is no exception. If you're building a powerful 393 cubic inch LSX engine, these pistons are designed to handle the demands of a performance build. They are engineered to work with a 4.155-inch bore and a 3.622-inch stroke, fitting a 6.125-inch connecting rod with a 0.927-inch pin.

This set features flat-top pistons with a -5.8cc dish, contributing to a 10.5:1 compression ratio when paired with the correct cylinder heads and gasket combination. The pistons themselves weigh in at 491 grams, a consideration for engine balancing. They are constructed from 2618 aluminum, a strong and lightweight material commonly used in high-performance pistons for its durability under high temperatures and pressures. This material choice helps ensure reliability in demanding applications.

This set includes pistons for a complete 8-cylinder engine. Please note that these pistons are not CARB approved and cannot be shipped to California. It's always a good idea to consult with your engine builder or a trusted mechanic to ensure these pistons are the right fit for your specific build and to discuss any necessary supporting components for optimal performance and longevity.