What is the primary benefit of using 2618 alloy forgings?

2618 alloy forgings are used because they offer superior strength and performance compared to cast aluminum. This makes them ideal for high-stress applications like performance LS engines where durability under load is critical.

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

These profiles are designed to help the piston generate substantial power while minimizing wear on the cylinder walls. This balanced approach contributes to both performance and longevity of the engine.

Are these pistons compatible with all LS engines?

These pistons are specifically for Chevrolet LS engines with a 4.185-inch bore and a -31.00 CC dish. Compatibility also depends on your chosen cylinder heads, gasket thickness, and desired compression ratio. They are not CARB approved and cannot ship to California.

Specifications

Brand: Manley Performance
Part #: 599260C-8
UPC: 807298083315

Manley Chevrolet LS Piston Set - 4.185in Bore 1.315in CH, -31.00 CC

Name: Manley Chevrolet LS Piston Set - 4.185in Bore 1.315in CH, -31.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-ls-piston-set-4-185in-bore-1-315in-ch-31-00--t14-880602
Price: 1004.51 USD
Availability: BackOrder

$1004.51

On Backorder — Expected to ship by May 3, 2026

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

Manley Chevrolet LS Piston Set - 4.185in Bore 1.315in CH, -31.00 CC. Forged from 2618 alloy for superior strength and performance in high-output engines.

Key Features

Fits Chevrolet LS engines with a 4.185-inch bore.
Features a -31.00 CC dish volume for precise compression ratio tuning.
Constructed from domestic 2618 alloy forgings for superior strength and performance.
Includes premium chrome moly wrist pins for added durability.
Machined with exacting standards for ring lands and grooves to enhance ring seal and power.
Utilizes proven cam and barrel skirt profiles for efficient power generation and cylinder wall protection.

This piston set is designed for Chevrolet LS engines. Please verify compatibility with your specific engine build and cylinder head combination.

⚠️ 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

If you're building a high-performance Chevrolet LS engine, this Manley Performance piston set is a solid choice. These are forged pistons designed for serious power. They feature a 4.185-inch bore and a -31.00 CC dish, which is important for setting your compression ratio correctly with your cylinder heads and gasket thickness.

Manley uses domestic 2618 alloy forgings, which are known for being strong and reliable under high stress, making them a popular pick among professional engine builders. The pistons also have proven cam and barrel skirt profiles. This design helps them generate power efficiently while also being gentler on your cylinder walls, which can extend engine life. The ring lands and grooves are machined to tight tolerances, which is key for getting a good seal from your piston rings, leading to better compression and more power. They come with premium chrome moly wrist pins, and Manley's unique manufacturing process ensures the ring grooves are perfectly square to the piston skirts.

This set is designed for 8-cylinder engines and is a critical component for anyone looking to push their LS engine beyond stock performance levels. Keep in mind that these are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.