What is the compression ratio with these pistons?

These pistons feature a -5.8cc dish volume, which results in a 9.9:1 compression ratio when used with the specified stroke and rod combination. This is a common ratio for performance builds.

What material are these pistons made from?

The pistons are forged from 2618 aluminum. This is a strong and durable material commonly used in performance engine components due to its ability to withstand high temperatures and pressures.

Are these pistons legal for use in California?

No, these pistons are not CARB approved and cannot be shipped to California. It is important to check local emissions regulations before purchasing.

Mahle LSX Forged Piston Set 930226800

Name: Mahle MS Piston Set GM LSX 364cid 4.000x1.304CH 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-364cid-4-000x1-304ch-3-622-stk-6-125-rod-927-pi-t14-348848
Price: 820.08 USD
Availability: BackOrder

Mahle MS Piston Set GM LSX 364cid 4.000x1.304CH 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 LSX 364cid forged piston set for Chevrolet LS engines. 4.000" bore, 9.9 CR. Part# 930226800. Not CARB approved. Fast shipping.

Key Features

Fits Chevrolet LS 364 cu in engines.
Mahle MS forged piston set.
4.000 inch bore size.
Designed for 3.622 inch stroke and 6.125 inch connecting rod.
Uses a 0.927 inch wrist pin.
Features a -5.8cc dish volume for a 9.9:1 compression ratio.

This piston set is designed for Chevrolet LS 364 cubic inch 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 making solid engine components, and this set of MS pistons for GM LSX 364 cubic inch engines is a great example of their work. If you're building or rebuilding a performance LS engine, these pistons are designed to handle the demands of a high-output setup. They feature a 4.000-inch bore and are designed to work with a 3.622-inch stroke crankshaft and a 6.125-inch connecting rod, with a 0.927-inch wrist pin.

These pistons are forged from 2618 aluminum, a strong material commonly used in performance applications because it offers good durability and resistance to expansion under high heat. The dish volume is -5.8cc, which, combined with the other specified dimensions, results in a compression ratio of 9.9:1. This compression ratio is a good balance for many performance builds, offering improved power over stock without being so high that it requires extremely specialized fuel or tuning. Each piston weighs in at 439 grams, which is a reasonable weight for a forged piston of this size, helping to keep reciprocating mass in check.

This set includes eight pistons, enough for a complete V8 engine. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.