What material are these Mahle pistons made from?

These Mahle MS pistons are forged from 2618 aluminum. This material is chosen for its strength and ability to withstand high temperatures and pressures common in performance engine builds.

What is the compression ratio achieved with these pistons?

With a -5.8cc piston dish volume and the specified engine components, these pistons achieve a 9.9:1 compression ratio. This is a versatile ratio suitable for many naturally aspirated and forced induction applications.

Are these pistons legal for use in California?

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

Mahle GM LSX 365cid Piston Set 930226805

Name: Mahle MS Piston Set GM LSX 365cid 4.005x1.304CH 3.622 Stk 6.125 Rod .927 Pin -5.8cc 9.9CR - Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-lsx-365cid-4-005x1-304ch-3-622-stk-6-125-rod-927-pi-t14-348849
Price: 820.08 USD
Availability: BackOrder

Mahle MS Piston Set GM LSX 365cid 4.005x1.304CH 3.622 Stk 6.125 Rod .927 Pin -5.8cc 9.9CR - Set of 8

$820.08

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 365cid engines. Forged 2618 aluminum construction for high-performance builds.

Key Features

Set of 8 Mahle MS pistons for GM LSX 365cid engines.
Forged from 2618 aluminum for high-strength applications.
4.005 inch bore size.
-5.8cc piston dish volume for a 9.9:1 compression ratio.
Designed for use with 6.125 inch connecting rods and 0.927 inch wrist pins.
Each piston weighs 441 grams.

This piston set is designed for Chevrolet LS 365 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

If you're building or rebuilding a GM LSX 365 cubic inch engine, this Mahle MS Piston Set is a solid choice for serious performance. These pistons are designed for the demands of a high-output engine, offering a reliable foundation for your build. They feature a 4.005-inch bore and a 3.622-inch stroke, working with a 6.125-inch connecting rod and a 0.927-inch wrist pin. The dish volume is -5.8cc, which, when combined with the specified components, results in a compression ratio of 9.9:1. This makes them suitable for a wide range of applications, from naturally aspirated builds to forced induction setups where controlled compression is key.

Mahle uses 2618 aluminum for these pistons, a material known for its strength and durability under high temperatures and pressures. Each piston weighs in at 441 grams, contributing to a well-balanced rotating assembly. The 1.304-inch compression height is also a critical dimension that ensures proper piston-to-valve clearance and deck height with your chosen crankshaft and connecting rods. This set includes eight pistons, providing everything you need for a complete engine overhaul.

It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to your engine build specifications and Mahle's detailed installation instructions to ensure proper fitment and performance with your specific combination of components.