What material are these pistons made from?

These Manley pistons are forged from domestic 2618 alloy. This material is chosen for its superior strength and performance characteristics, making it well-suited for demanding engine builds.

What is the purpose of the cam and barrel skirt profiles?

The cam and barrel (skirt) profiles on these pistons are designed to generate substantial power while also being gentle on the cylinder walls. This helps to reduce wear and ensure a longer lifespan for your engine components.

Are these pistons CARB approved?

No, these pistons are not CARB approved and cannot be shipped to California. Please check local regulations regarding emissions compliance for your vehicle.

Specifications

Brand: Manley Performance
Part #: 590940-8
UPC: 807298011707

Manley Chevrolet Small Block Piston Set - 4.040in Bore 1.125in CH, -15.00 CC

Name: Manley Chevrolet Small Block Piston Set - 4.040in Bore 1.125in CH, -15.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-small-block-piston-set-4-040in-bore-1-125in--t14-880214
Price: 878.75 USD
Availability: BackOrder

$878.75

On Backorder

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

Manley Chevrolet Small Block Piston Set - 4.040in Bore 1.125in CH, -15.00 CC. Forged from 2618 alloy for superior strength and performance.

Key Features

Fits Chevrolet Small Block engines with a 4.040 inch bore.
Features a 1.125 inch compression height and -15.00cc valve relief volume.
Constructed from domestic 2618 alloy forgings for superior strength and performance.
Includes premium chrome moly wrist pins for added durability.
Engineered with cam and barrel skirt profiles to optimize power and reduce cylinder wall wear.
Maintains exacting standards for ring lands and grooves to enhance ring seal and power output.

This piston set is designed for Chevrolet Small Block engines with a 4.040 inch bore. 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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About this part

Product Details

Starting with domestic 2618 alloy forgings, these Manley pistons are built for serious performance in your Chevrolet Small Block engine. This set is designed for a 4.040-inch bore with a 1.125-inch compression height and a -15.00cc valve relief volume, making them a solid choice for rebuilds where power and durability are key.

Manley's signature cam and barrel skirt profiles are engineered to generate substantial power while minimizing wear on your cylinder walls. They've also paid close attention to the ring lands and grooves, holding them to strict standards to ensure a better ring seal, which translates directly to more power. The unique fixturing Manley uses allows them to machine the skirt and ring grooves in one operation, ensuring ultimate squareness between the two critical areas.

Included with these pistons are premium chrome moly wrist pins, known for their strength. For those looking to push the limits even further, Manley offers upgrades to 9310 and Turbo Tuff/DLC alloys for even greater durability. These pistons are a popular choice among professional engine builders and tuners who demand reliable performance and longevity from their builds.