What is the compression ratio with these pistons?

These Mahle pistons are designed to achieve an 11.1:1 compression ratio when used with the specified crankshaft stroke and cylinder head volume. This is a popular ratio for performance builds seeking improved power.

What material are these pistons made from?

The pistons are forged from 2618 aluminum. This material is chosen for its high strength and durability, making it suitable for the stresses of performance engine 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 415cid Piston Set 930227565

Name: Mahle MS Piston Set GM LSX 415cid 4.065x1.110RCH 4.000 Stk 6.125 Rod .927 Pin -5.8cc 11.1CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-lsx-415cid-4-065x1-110rch-4-000-stk-6-125-rod-927-p-t14-348865
Price: 859.74 USD
Availability: BackOrder

Mahle MS Piston Set GM LSX 415cid 4.065x1.110RCH 4.000 Stk 6.125 Rod .927 Pin -5.8cc 11.1CR Set of 8

$859.74

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 415cid engines. Features 4.065 bore and 11.1:1 compression ratio for improved performance.

Key Features

Fits Chevrolet LS 415 cu in engines.
Forged from 2618 aluminum for strength and durability.
Designed for a 4.065-inch bore and 4.000-inch stroke.
Features a -5.8cc valve relief volume.
Achieves an 11.1:1 compression ratio.
Includes 8 pistons, each weighing 437 grams.

This piston set is designed for Chevrolet LS engines with a 415 cubic inch displacement. Always 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

If you're building a high-performance GM LSX engine and need a solid set of pistons to handle the power, this Mahle MS Piston Set is a strong contender. Designed for 415 cubic inch displacements, these pistons are built to be a core part of a robust engine build. They work with a 4.000-inch stroke crankshaft and a 6.125-inch connecting rod, featuring a .927-inch pin diameter, which are common specifications for performance LSX applications.

Mahle has engineered these pistons with a 4.065-inch bore and a -5.8cc valve relief volume, contributing to an 11.1:1 compression ratio. This compression ratio is well-suited for naturally aspirated or forced induction builds where you want a noticeable increase in power without sacrificing too much drivability. The pistons are forged from 2618 aluminum, a material known for its strength and durability under high stress, making them a reliable choice for demanding engine builds. Each piston weighs in at 437 grams, which is a reasonable weight for a forged piston of this size, helping to keep reciprocating assembly balance in check.

This set includes eight pistons, enough for a complete V8 engine. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For a successful installation, always refer to the manufacturer's detailed specifications and recommended assembly procedures to ensure proper fitment and performance in your specific engine build.