What material are these Mahle pistons made from?

These Mahle MS pistons are forged from 4032 aluminum. This material is chosen for its strength and ability to handle the demands of performance engines.

What is the intended compression ratio for this piston set?

This piston set is designed to achieve a 10.8:1 compression ratio. This is suitable for many performance-oriented LS engine builds.

Are these pistons compatible with all LS engines?

These pistons are specifically designed for GM LS engines with a 427 cubic inch displacement and a 4.065-inch bore. It's important to confirm these specifications match your engine build.

Mahle LS 427ci Piston Set 4.065in Bore 930225265

Name: Mahle MS Piston Set GM LS 427ci 4.065in Bore 4.125in Stk 6.125in Rod .927 Pin -8cc 10.8 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-ls-427ci-4-065in-bore-4-125in-stk-6-125in-rod-927-p-t14-28784
Price: 912.97 USD
Availability: BackOrder

Mahle MS Piston Set GM LS 427ci 4.065in Bore 4.125in Stk 6.125in Rod .927 Pin -8cc 10.8 CR Set of 8

$912.97

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle forged piston set for GM LS 427ci engines. Features a 4.065in bore and 10.8:1 compression ratio.

Key Features

Set of 8 Mahle MS forged pistons for GM LS 427ci engines.
4.065 inch bore and 4.125 inch stroke compatibility.
Designed for a 10.8:1 compression ratio.
Constructed from 4032 aluminum for strength and durability.
Features a -8cc dish volume and a 6.125 inch rod length.
Includes a standard 0.927 inch pin diameter.

This piston set is designed for Chevrolet LS 428 cu in engines. 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, especially for their piston technology. This set of eight Mahle MS pistons is built for GM LS engines displacing 427 cubic inches, with a 4.065-inch bore and a 4.125-inch stroke. These pistons are designed to achieve a 10.8:1 compression ratio, making them a solid choice for performance builds where increased power is the goal.

Crafted from 4032 aluminum, these pistons are forged for strength and durability, able to withstand the higher pressures and temperatures found in performance applications. They feature a -8cc dish volume and a 6.125-inch rod length compatibility, with a standard 0.927-inch pin diameter. Each piston weighs in at 432 grams, contributing to a well-balanced rotating assembly. This set is intended for engine builders looking for a reliable, high-performance piston solution for their LS-based project.

Please note that this piston set is not CARB approved and cannot be shipped to California. It is also subject to California's Proposition 65 warning.