What are the key specifications for these pistons?

These JE Pistons are designed for a 4.310 inch bore, have a 1.648 inch compression distance, and use a 0.990 inch wrist pin. They are intended for Big Block Chevrolet engines with closed chamber cylinder heads.

What materials are these pistons made from and why does it matter?

The pistons are forged from 2618 aluminum in the USA. This material provides the high tensile strength needed for high-demand performance applications, offering a good balance of strength and weight for racing engines.

Are there any special features on these pistons?

Yes, they feature JE's proprietary Forged Side Relief (FSR) design to reduce friction and power loss. Depending on the specific application, they may also include an accumulator groove for improved ring seal and a skirt coating to reduce friction and noise.

JE Pistons BBC Closed Chamber Piston Set 258205

Name: JE Pistons BBC CLOSED CHBR Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-closed-chbr-set-of-8-pistons-t14-295685
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC CLOSED CHBR Set of 8 Pistons

$1052.79

On Backorder

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

JE Pistons BBC Closed Chamber Set of 8 Pistons. Forged from 2618 aluminum for high-demand performance applications.

Key Features

This is a set of 8 pistons for a Big Block Chevrolet engine.
Forged in the USA using 2618 aluminum for high tensile strength.
Features proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Designed specifically for each engine and use application for optimized performance and durability.
Includes a 4.310 inch bore size, 1.648 inch compression distance, and 0.990 inch pin diameter.
Pistons are designed for closed chamber cylinder heads.

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Product Details

This is a set of eight JE Pistons for a Big Block Chevrolet engine, designed for closed chamber cylinder heads. You get the pistons themselves, ready to be installed in your build. JE Pistons has been making forged racing pistons for over 75 years, and they engineer these specifically for each engine and racing application to give you a strong combination of durability and performance.

These pistons are forged in the USA using 2618 aluminum, which gives them the high tensile strength needed for demanding performance applications. They feature JE's proprietary Forged Side Relief (FSR) design, which helps minimize friction and power loss by using a reduced skirt width and a shorter wrist pin, saving weight in the process. Depending on the specific application, you might also find an accumulator groove to help reduce combustion gas pressure, which can prevent ring flutter and improve ring seal for more consistent power. Some applications also include a skirt coating to reduce friction and wear on the piston skirts and cylinder walls, which can also help quiet down the engine's operation.

Because these are performance pistons, they are not CARB approved and cannot be shipped to California. Make sure to check the manufacturer's instructions for any specific installation requirements or recommended components for your build.