What material are these Mahle pistons made from?

These Mahle MS pistons are constructed from 4032 aluminum. This alloy is chosen for its strength and thermal expansion properties, making it suitable for high-performance engine builds.

What is the compression ratio achieved with these pistons?

With a -5.8cc dish volume and designed for a 4.065-inch bore and 4-inch stroke, these pistons achieve an 11.1:1 compression ratio. This is a popular ratio for many performance applications.

Are these pistons compatible with all GM LS engines?

This specific set is designed for GM LS engines with a 415 cubic inch displacement and a 4.065-inch bore. While many LS engines share commonalities, it's crucial to confirm that your engine's specifications match those of this piston set.

Mahle GM LS Piston Set 4.065in Bore 11.1 CR 930227965

Name: Mahle MS Piston Set GM LS 415cid 4.065in Bore 4in Stk 6.125in Rod .927 Pin -5.8cc 11.1 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-ls-415cid-4-065in-bore-4in-stk-6-125in-rod-927-pin--t14-730287
Price: 820.08 USD
Availability: BackOrder

Mahle MS Piston Set GM LS 415cid 4.065in Bore 4in Stk 6.125in Rod .927 Pin -5.8cc 11.1 CR 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 LS 415cid engines. 4.065in bore, 11.1 CR, 4in stroke.

Key Features

Fits GM LS 415 cu in engines.
Set includes 8 pistons.
4.065 inch bore size.
4.000 inch stroke compatibility.
Designed for 6.125 inch connecting rods.
.927 inch wrist pin diameter.

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

Mahle is a well-known name in engine components, particularly for their expertise in pistons and rings. This Mahle MS Piston Set is built for GM LS engines displacing 415 cubic inches, designed for performance builds where precise engine control is key. These pistons are crafted from 4032 aluminum, a material chosen for its strength and ability to handle the thermal expansion common in high-performance applications.

Each piston in this set features a 4.065-inch bore and is designed to work with a 4-inch stroke and a 6.125-inch connecting rod, with a .927-inch wrist pin. The dish volume is -5.8cc, which, combined with the other engine specifications, results in a compression ratio of 11.1:1. This specific compression ratio is often sought after for naturally aspirated or forced induction builds aiming for a balance of power and drivability. The pistons weigh 426 grams each, contributing to a well-balanced rotating assembly.

This set includes eight pistons, providing a complete solution for a V8 engine. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For optimal installation and performance, always refer to Mahle's specific technical documentation and recommended assembly procedures.