What is the compression ratio achieved with these pistons?

These Mahle pistons are designed to achieve a 12.1:1 compression ratio when used with appropriate cylinder heads and a 3.5-inch stroke crankshaft. The -8cc dish volume is a key factor in reaching this ratio.

Are these pistons suitable for a stock engine rebuild?

These are performance pistons forged from 2618 aluminum alloy, designed for higher compression and increased power. While they can be used in a performance-oriented rebuild, they are not typically intended for a stock replacement application due to their compression ratio and material.

What does the 'MS' in the product name signify?

The 'MS' designation from Mahle typically refers to their performance piston line, often indicating a forged construction from specific alloys like 2618 aluminum, designed for demanding applications.

Mahle SBC Piston Set 4.050in Bore 12.1 CR 197724950

Name: Mahle MS Piston Set SBC 361ci 4.050in Bore 3.5in Stroke 5.7in Rod .927 Pin -8cc 12.1 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-sbc-361ci-4-050in-bore-3-5in-stroke-5-7in-rod-927-pin--t14-29304
Price: 980.04 USD
Availability: BackOrder

Mahle MS Piston Set SBC 361ci 4.050in Bore 3.5in Stroke 5.7in Rod .927 Pin -8cc 12.1 CR Set of 8

$980.04

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 SBC 361ci engines. Features a 4.050in bore and 12.1:1 compression ratio for improved performance.

Key Features

Fits Chevrolet Small Block 361 cu in engines.
Forged from 2618 aluminum alloy for strength and durability.
4.050 inch bore size.
3.5 inch stroke compatibility.
5.7 inch rod length.
0.927 inch pin diameter.

This piston set is designed for Chevrolet Small Block 361 cubic inch engines. It is not CARB approved and cannot be shipped to California.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Product Details

Forged from 2618 aluminum alloy, this Mahle MS piston set is built for serious performance in your Chevrolet Small Block engine. With a 4.050-inch bore and a 3.5-inch stroke, these pistons are designed to achieve a 12.1:1 compression ratio, giving your engine a noticeable boost in power and responsiveness. The -8cc dish volume is carefully calculated to work with common cylinder head volumes for this target compression.

Each piston weighs in at 468 grams, a testament to their robust construction while maintaining a focus on reducing reciprocating mass. The 5.7-inch rod length and 0.927-inch pin diameter are standard specifications for many performance Small Block Chevy builds, ensuring good compatibility with your existing or planned rotating assembly. This set includes eight pistons, ready to be installed in your 361 cubic inch engine build.

Please note that these pistons are not CARB approved and cannot be shipped to California. They are also subject to Prop 65 warnings. For optimal performance and longevity, always refer to the manufacturer's installation instructions and recommended clearances.