What material are these pistons made from and why is it important?

These pistons are forged from a 2618 alloy. This material is chosen for its exceptional strength and ability to withstand high temperatures and pressures common in performance engine builds, offering superior durability compared to cast aluminum.

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

The cam and barrel skirt profiles are designed to optimize the piston's movement within the cylinder bore. This shape helps to reduce friction and wear on the cylinder walls while also contributing to efficient combustion and power generation.

Are these pistons compatible with all LS engine blocks?

These pistons have a 4.125 inch bore and a -20.00cc dish. While common for many LS engine displacements, it's crucial to verify that your specific LS engine block and desired compression ratio are compatible with these specifications before installation.

Specifications

Brand: Manley Performance
Part #: 596400C-8
UPC: 807298077970

Manley Chevrolet LS Piston Set - 4.125in Bore 1.065in CH, -20.00 CC

Name: Manley Chevrolet LS Piston Set - 4.125in Bore 1.065in CH, -20.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-ls-piston-set-4-125in-bore-1-065in-ch-20-00--t14-880542
Price: 1004.51 USD
Availability: BackOrder

$1004.51

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 LS Piston Set - 4.125in Bore 1.065in CH, -20.00 CC. Forged from 2618 alloy for superior strength and performance in high-output LS engines.

Key Features

Fits Chevrolet LS engines with a 4.125 inch bore.
Forged from a strong 2618 alloy for superior strength and performance.
Features a -20.00cc dish volume for setting compression ratio.
Includes proven cam and barrel skirt profiles for reduced wear and improved power.
Ring lands and grooves are machined to exacting standards for enhanced ring seal.
Comes standard with premium chrome moly wrist pins for durability.

These pistons are designed for Chevrolet LS engines with a 4.125 inch bore. Please consult with your engine builder or refer to manufacturer specifications to confirm compatibility with your specific application.

⚠️ 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

About this part

Product Details

If you're building a high-performance Chevrolet LS engine, getting the right pistons is a critical step. These Manley Performance pistons are forged from a strong 2618 alloy, a material known for its ability to handle the stresses of boosted or naturally aspirated performance builds. They feature a -20.00cc dish volume, which is important for setting your compression ratio, and a 4.125-inch bore size, common for many LS engine displacements.

Manley uses proven cam and barrel skirt profiles on these pistons. This design helps them run smoothly against the cylinder walls, reducing wear and noise while still allowing for significant power gains. The ring lands and grooves are machined to strict tolerances, which is key for achieving a good seal with your piston rings. A good ring seal means better compression and less blow-by, translating directly to more power and efficiency. These pistons also come with chrome moly wrist pins, which are strong and durable for demanding applications.

For serious engine builders, Manley's manufacturing process is notable. Their unique fixturing allows them to machine the skirt and ring grooves in one setup, ensuring the ring grooves are perfectly square to the piston skirt. This attention to detail contributes to overall engine reliability and performance. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are designed for custom engine builds where performance and durability are the top priorities.